- Full digital amplifier
The SU-GX70’s digital transmission system processes signals fully digitally in all stages from input to output for accurate signal processing that delivers high-resolution digital audio that maintains the soft texture inherent in analogue recordings. - JENO engine
A JENO Engine has been used in the HDMI ARC, helping reduce degradation in sound quality caused by jitter during the transmission of digital audio signals (S/PDIF), ensuring unparalleled levels of clarity in TV audio. - Ideal impulse response through LAPC
A speaker impedance adaptive optimization algorithm performs correction to the ideal impulse response through digital signal processing by measuring the frequency amplitude-phase characteristics of the amplifier with the speakers connected. - Twin power supply circuit system
The SU-GX70 is equipped with a dedicated power supply for the power amplifier circuits that is independent from all other circuits. - Analogue input using discrete amp circuits
The discrete amp circuit used in the SU-GX70 was redesigned and adapted from the circuit used in the SU-R1000, and the same symmetrical layout has been used. - High-quality music and audio from video sources
Equipped with an HDMI ARC, low-impact HDMI video output ensures users can enjoy high-quality music and audio from the video source. - Compatible with a variety of music sources
The SU-GX70 supports a variety of music sources including radio, analogue input (PHONO(MM)/LINE), optical digital input (such as TV), coaxial digital input and USB input. - Enjoy high-quality sound wirelessly
The SU-GX70 can play back high-resolution music wirelessly stored in a smartphone, tablet or PC. It supports Bluetooth, AirPlay2, Spotify Connect, Internet radio and Chromecast built-in so you can enjoy a wide range of music streaming services. - Premium design
We have ensured high-quality design throughout, including the 7mm thick aluminum front panel with a hairline finish and the engraved Technics logo. The volume knob is made of solid aluminum to create a high-quality feel and ensure reliable operation.
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Technics – Grand Class Network Integrated Audio Amplifier – Silver
$960.00
Available in stock
Description
Additional information
| Weight | 6.6 lbs |
|---|---|
| Dimensions | 14.49 × 430 × 3.9 in |
| Color | Silver, Black |
| Product Depth | 14.49 inches |
| Product Height | 3.9 inches |
| Manufacturer's Warranty - Labor | 3 Year |
| Product Name | Grand Class Network Integrated Audio Amplifier |
| Input(s) | USB Type A |
| Brand | Technics |
| Color Category | Silver |
| Manufacturer's Warranty - Parts | 3 Year |
| Product Weight | 6.6 pounds |
| Product Width | 430 inches |
| Model Number | SU-GX70PP-S |
| UPC | 885170401419, 885170401402 |
Reviews (15)
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MeDavid16 –
I am a gamer and an amateur musician.
I assume if you are looking at this little guy, you are already aware of what you’re looking for. You know the difference between a receiver and an amp, and you are specifically looking for an amp.
When shopping for an amp, there are some considerations you are looking for; how much power we’re putting out, digital chips/decoders that are used, range of sound we are getting, how accurate is the sound, build materials used in the construction of the internals, what and how many input/outs you get, etc and even in this day and age consideration for wireless capabilities. This baby does not disappoint.
You will find in many reviews the praises of how many options you get to play music off of; you can cast off Chromecast, Airplay 2, Spotify, Tidal, Apple Music, radio / internet radio, aside from all the physical ports in the back (2 line level inputs, RCA, optical/coaxial digital inputs, HDMI / HDMI ARC, USB type A and type B, as well as the 6.3mm jack in the front. The internal DAC can manage up to 32bit / 384 kHz PCM streams, and you’re looking at 40w per channel in 8Ohm or 80W in 4Ohm. After listening to the sound I was more impressed with the machine and decided to research some more about the machine, discovering the transistors/capacitors, etc all the components chosen and used were distinctly picked to minimze any distortions, jitters, etc. The digital amplifier uses the JENO Engine along with the fancy circuitry to fine tune the output even further, to give you this amazing sound. I’d be hardpressed to even try to explain what LAPC is, just know it makes the sound/output stage sound amazing. Your money is buying alot of these nice features to make the output sound amazing… and it works!
Setting up was easy. I just used Google Home, and add device, just make sure the machine is blinking Wifi Settings, your Google Home will detect it and walk you through the installation process. I thought it was a little strange but I did receive a warning screen about this machine not being made for my country and I may have some compatibility issues… everything worked fine but it did make me a little nervous, see screen shot.
My box didn’t come with the AAA batteries, I think it should’ve came with it, either it didn’t come with it or my kids took it, but I definitely didn’t find any in the box.
After a quick set up, literally less than 5 minutes, I have this set up in my living room temporarily (see pictures) so that I can run across several speakers, and also have family members give me their subjective opinions of what they are hearing. Collectively we all agree the output was amazing. As you can see I have the Marantz receiver right below (yes I did move the machine prior to firing up the set up to avoid any interference from each other), I’ve also had some other headphones, ATH-M50x Monitor headphones by Audio Technica, Apples Airpod Pro, Airpod Max, etc have it set up and had everyone in the family try the amp.
We collectively agree the distinct instruments are much more discernible. I was pleasantly surprised the GX70 matched if not outperformed the Marantz in the crisp, distinctness of each channel/tone/instruments. Amazing! Although I didn’t feel it matched the large stage feeling the Marantz did, my wife and kids felt it was comparable. We played a variety of genre, classical piano/violin music, symphonies, talk shows, movies. We played Apple Music , TIDAL, some hi def music just to see the difference. It was quite clear the GX70 is competitive, and if not better, than some of the other equipment I have at home, and carries a lighter price tag. Things like speech in a movie, dialogue in a video game, were much less of a difference. But when opening music to say Star Wars or Harry Potter came on, we all looked at each other amazed at the difference. The lows didn’t muddle the highs and the mids were more easily audible. I have to rethink about my speakers, as now I feel either my other equipment is aging, or the Gx70 is showing me I need to upgrade my audio environment.
All in all – easy to set up, great audio, amazing product for what you pay for!
ferrari –
I’ve been a supporter of Technics products since their early days. My first turntable was a Technics belt drive; about a dozen years ago I upgraded to one of their world renowned SL-1200 turntables which has served me flawlessly; last year I became the proud owner of a 1210 Grand Class turntable; which makes a perfect companion to this Grand Class Network Receiver. With a collection of vinyl records numbering in the thousands, I suppose one would slap the “audiophile” moniker on me. I do hunt out the “best” copies of my favorite recordings, and of course, want to play them on equipment that will deliver the best performance.
All the specs for this device are laid out quite clearly, so I will not be telling you that it has X number of inputs/outputs or detailing the power specifications. What matters to me is the “experience.” The product came nicely packaged, the first thing I appreciated is it had a full paper manual, not the nonsense or pictograms that come with most electronic devices today. While it was comprehensive, it contained a notation that a “full” manual could be downloaded. I did follow the download, the full manual amounted to 129 pages.
As I said, I’m a vinyl addict and probably what could be called a purist. What that means is my vinyl system is completely separate and autonomous from my other devices. It’s not connected to any 5 channel receiver, soundbar, or any device that could interfere with the quality of the sound. That said, the first thing that struck me in reading the manual was that there was a pure amplification setting that segregated the amplifier from any extraneous inputs such as HDMI, Bluetooth that could possibly degrade the amplification process.
That said, the GX70 is going to open a new world for me. I subscribe and follow various audio websites and blogs. I read reviews of new vinyl recordings, and I see enthusiasts that detail their reviews with spectograms, and discuss comparisons of the vinyl with 192 khz 24 bit audio downloads. To be specific, Steely Dan has had recent remasterings of their recordings, Aja being by far the most popular. Now I have the ability to dowload these recordings via Qobuz, perform my own comparisons, and be able to join in the conversations.
I’ve connected the GX70 via wired ethernet and Wifi, connected an SACD player, downloaded the Technics Audio app, connected it to my Sirius/XM app, and have used it to access the hundreds if not thousands of titles in my personal catalog. I’ll now start my new adventure into the world of streaming audio.
If there’s any disappointment with the GX70, I do see streaming players that will display an image of the item being played, the simple monochrome display is not capable of that; however, maybe that would take away from the simple elegance of the unit. I will say however, that the Technics app, while functional, has a kind of dull appearance – it really could use a touch from the design folks.
On a performance note, I just wanted to say that for amplification purposes, the GX70 is replacing my vintage McIntosh power amp. Do I feel that I’ve taken a downgrade in audio performance? Absolutely not – but I do miss those big VU meters pulsing away!
CactusJax –
The Technics Grand Class Integrated Audio Amplifier is a high-end stereo amplifier geared for today’s streaming services as well as being able to be the heart of traditional audio system. The front has a power switch, headphone jack, a USB type A port, a volume knob, an input selector knob and a display with touch controls. In the rear there are connections for a turntable (with ground), 2 RCA inputs, an HDMI port with ARC, a digital coax connection, 2 Toslink connections, a USB type B, Wi-Fi antennas, a wired network port, FM antenna connector, speaker connections and a pre-out. I hooked this receiver to my TV using the HDMI ARC connection/cable. With the ARC function, the TV powers the amplifier on and off, controls the volume etc. The TV sounds great through this amplifier. Streaming music through the apps on my smart TV sounded great and provides controls, song data and images on the TV screen. I was surprised that connecting with an HDMI cable provided no imagery back to the TV screen. Streaming through Bluetooth sounds just as great both directly connected or through the app. I added a subwoofer using the pre-out connection. The amplifier has great channel separation and a wide quiet soundstage. At times there is a large venue, reverb-ish quality. I have heard/noticed details in music that I have never noticed before. Interestingly, I hear lots of detail at a volume low enough to have a conversation that usually requires significantly louder volume to hear. This thing really sounds phenomenal!
While I am thrilled at the sound quality this amp provides there are a couple of challenges for me. I have only had a weekend to explore the amp and perhaps I will discover workarounds. First, I have a network drive that has my entire library in WMA-Lossless format. WMA in any format is not listed as compatible with this unit. I have also recoded the library to MP3 at 320 kbps so that the library will fit on my phone and tablet. The MP3 sounds great, and I have yet to see what happens when I try to play WMA. Second is the HDMI. I haven’t found any video output to the TV from the amp. My assumption is that using an HDMI there would be some sort of video signal. My TV’s only have one HDMI ARC terminal so I must give up the Dolby Atmos connection to the TV for stereo. While the stereo is amazing, I need my spatial effects. I plan to dig out a Toslink cable which should give me the same quality stereo sound and allow me to keep my TV connected to Atmos with the HDMI ARC. Lastly, the unit doesn’t claim support for some of the popular streaming services.
This unit is the best sounding stereo amp I have ever used. While I have mentioned a couple of things that require workarounds, I really love the sound that this generates. I have only had a couple of days to play with this and look forward to seeing what else it can do.
SimpleLiving –
This is a versatile one-box streaming amplifier system that can do a lot. It has the capability for sound from HDMI ARC input. This system can play everything: turntable, CD player, digital files, internet radio, FM radio, TV sound, and Tidal streaming service. The entire box is encased in a silver metal frame with a high-quality build and finish. The few buttons and the informative display, which is a touch screen, have a sleek design and placement. The dimensions are similar to those of other systems. The system works well out of the box; I completed the installation and the connection to the Wi-Fi in under 30 minutes. Using the Google Home app, the system is not connected to my house Wi-Fi, which is great if you use Google Chromecast. Alternatively, you can use the system via Bluetooth. The built-in FM radio works great, providing an excellent signal to my favorite radio stations. There are multiple ways to connect the system: (1) two line-level inputs; (3) phono RCA; (4) optical and coaxial digital inputs; (5) a high-quality 6.3 mm headphone jack; (6) HDMI ARC; and (7) two USB ports (Type A and Type B).
This is a crossover product that makes it possible not only for streaming services such as music, radio, and podcasts but also for the sound coming from video services (movies). Technics combines both types of services so that users can enjoy the great sound of an audio system as well as the video content on one system and easily switch from one source to another. What is special about this product is that the HDMI ARC does great at removing any noise from the video circuitry of the integrated digital environment. Now, when I watch high-definition movies, the sound produced by the system is of pristine quality. There is no need to use two controls to watch movies because the sound volume coming from the TV using the HDMI ARC can be controlled with the TV’s remote control. The power output is 80 watts a channel into four and 40 watts a channel into eight. This awesome high-end audio network integrated amplifier system allows you to listen to music/audio from nearly every connection type, source connectivity, and digital connectivity. What today’s music lovers want is convenience and great sound. The music landscape that this product allows streaming is huge, from different sources and services. I like the fact that I can do all this with just one system without the need to have another system when I switch to another source or streaming service.
Parker –
If you are looking at reviews for the Technics SU-GX70 then you are probably an audiophile looking for an upgrade/other options or possibly starting out and know Technics is a great brand to go with.
The Technics SU-GX70 is a stacked unit with connection options which I’ll talk about later and streaming options galore.
Build quality is excellent with this unit. The front panel is made up of 7mm thick aluminum and the finished looks great and the volume knob is also made up of solid aluminum which adds to the premium quality that you’d expect from Technics. The front panel also consists of a power button, headphone jack, USB-A port, remote sensor, volume knob, input selector knob and the display with touch buttons. I do enjoy this front layout as it doesn’t leave the unit looking busy or complicated.
Now to the connections. You have analog input terminals, analog input terminals for Line 1/ Line 2, Coax, Optical digital, USB-B, Pre-out, speaker terminals, wired LAN port and an HDMI port. You have all theses options and I really appreciate the HDMI port so you can hook up your TV. Although it may not have enough speaker output terminal for a full surround system it is a nice option to have. Speaking of speaker out terminals you can hook up 2 speakers for a 2 channel Hi-Fi system, which is what I am doing with a pair of Klipsch R51-M and I am really enjoying the sound quality.
Let’s talk about all the streaming options you have available on this unit. You have access to Qobuz, Tidal, Deezar, Amazon Music, Spotify and Internet radio. This unit also works with Google home and Apple home which you will need to setup along with the Technics app. I used the Google home app and setup my unit to my home wifi then connected it to the Technics app. The Technics app is simple to use and you can make all your adjustments from there. The unit also works with Apple Airplay and bluetooth.
Sound quality is great as the Technics SU-GX70 is a fully digital amplifier with LAPC
which help improve sound quality. There is also the JENO engine which helps HDMI ARC sound quality. So if you’re listening though an audio source such as a streaming service or even through the TV you will get great sound.
Malcolm –
The Technics SU-GX70 amplifier, and the sonic adventure it provided was nothing short of exceptional.
The Technics SU-GX70 is a modern marvel of audio technology. It’s not just about what’s inside; it also looks great (I have the unit with a silver finish). This amplifier is powerful, capable of making your speakers produce rich, clear sound. It can connect to a variety of devices, old and new, making it a versatile addition to your audio setup. Notably, the inclusion of a turntable connection enhances its appeal to vinyl enthusiasts.
In an era where music and streaming services are integral to our lives, the SU-GX70 proves itself by integrating seamlessly with the digital age. It effortlessly connects to popular music streaming services, opening up a vast library of music to explore. However, it’s important to mention that the network setup process, particularly through the Google Home app, presented a slight challenge. As an experienced user, I eventually managed to configure it successfully, but beginners may find this aspect slightly annoying.
The Technics SU-GX70 is a fantastic addition to any audio setup. It excels at delivering incredible sound, combined with a modern design and features. While there are a few minor challenges, especially in the internet setup, the SU-GX70 truly shines where it counts – in creating a superb listening experience.
Bootleg89 –
In my basement I have an embarassingly large amount of home audio equipment. I have multiple stereo receivers, and enough speakers to open a show room. Some would say I have a problem. But the one thing I was missing was an all in one, classy yet powerful amplifier to power my Klipsch Reference Premier speakers. Plus, I am on a mission to get rid of any audio equipment that I have not used this year. My wish was granted, and I received the Technics Grand Class network amplifier.
It ships in a very large box, but has a much smaller box inside with the actual amplifier. The amp is packed extremely well and includes a power cable, remote, and am/fm antenna. You plug in the unit and it is ready to go. It immediately starts with the wi-fi function as it looks to connect to your network. I already have the Google Home app, so connecting it to my home nework is super easy. All I had to do is connect two speakers to it and play some music. I have a vintage pair of KEF Q series floor standing tower speakers that I love. One quick note, the banana plugs have small covers on them plugged in that have to be removed to use banana plug connectors. They can be a little tricky to remove, but that was technically the hardest part about setting this up. I connected the speakers and playes some music off of my Spotify. I was immediately taken away into musical bliss. I was reminded of why I loved those speakers so much as the amplifier powered them with precise tones and beautiful notes. I immediately grabbed my family and asked them to have a listen to make sure it was not a placebo effect on my part. Everyone agreed that this was the best sounding music in the house thus far.
The amplifier has about every feature you can ask for. It has HDMI ARC, wi-fi, Apple Air Play, Chromecast, Bluetooth, and several inputs. It even has a phono input with ground, and an AM/FM tuner. It also features a pre out for an additional source.
I cannot say enough good things about this amplifier so far. It will be a mainstay in my basement for the foreseeable future. I highly recommend!
Lorax –
I am rarely a fan of marketing slogans; however, Technics slogan, rediscover music is quite appropriate for this amplifier. This is a high-quality two channel amplifier, which is designed to provide the best possible sound from many different sources, including video sources over to speakers. It has a high quality, moving coil photo input as well as Several streaming services, including Spotify and Tidal.
I replaced my 3.1 channel secondary home theater amplifier, which was a mid range brand designed for multiple video inputs and switching as well as up to eight speakers. This unit is all about the audio and merely strips the audio digital input from the ARC HDMI output of your television to create the best possible sound in any situation.
I tested with Apple classical, Spotify rock, jazz, reggae, rap, as well as bluegrass and performance was excellent. I also did direct comparisons of difficult to understand audio such as some older Britbox shows which can be difficult to understand without higher volumes. Even though a center channel speaker was not utilized. The speech was more clear and overall sound excellent. They were also no sync issue.
I am excited, not only to have better quality and more clear video audio but to relisten to my streaming, digital and vinyl music collections. It seems the products I have owned have over the last 20 years emphasized explosion, movies, and under emphasized, important music and voice quality. The unit is also smaller than most A/V amplifiers and it’s exactly the same size as my older NAD unit and comes in two colors. The build quality is excellent.
DoctorHoo –
The Technics SU-GX70 is a versatile network streaming amplifier that shares many of the outstanding sonic characteristics of its smaller brother the SA-C600. To my ears, it produces a pristine, neutral, and well-balanced sound that I love very much.
The build quality is phenomenal and I love the compact size and aesthetics of this amplifier. It’s the perfect amplifier for those who want to downsize from a behemoth home theater surround sound setup and focus more on music and improved audio quality.
The SU-GX70 comes with a ton of support for different audio sources.
It supports FM radio, USB flash drive playback, playback from a PC USB connection, and has one phono in, two line in, two digital optical connections, one digital coax connection and an HDMI port.
It also offers flexible support for streaming music services (i.e. Internet Radio, Chromecast, Amazon Music, TIDAL, Spotify etc.) as well as Bluetooth and home DLNA media servers,
Output connections include support for stereo speakers and a PRE OUT that you can connect to an external amplifier or to a subwoofer.
I prefer a single dedicated subwoofer connector instead of using a PRE OUT for connecting to a subwoofer. It just seems weird that you can use either the L or R PRE OUT connectors for this purpose but it seems to work.
The main difference between the SU-GX70 and the SA-C600 is that the SU-GX70 lacks a built-in CD player but comes with more physical input ports and is built with higher quality components and features such as LAPC speaker calibration.
The box came packed with the amplifier itself, a remote and batteries, an AC power supply cord, an FM indoor antenna and a user manual.
Setup was very easy. I used the Google Home app to set up wireless networking. The Google Home app was able to “see” the SU-GX70 and was able to quickly set up the amplifier to use my home wireless network.
After using the Google Home app to set up the wireless network, you can use either the included physical remote for basic control of the SU-GX70 or download an app called the “Technics Audio Center” for complete control and customization of the amplifier.
With the app, you have access to advanced settings such as Space Tune to calibrate the sound according to your speaker’s placement and room acoustics. There are presets for Free, Wall, Corner or “In a Shelf” placement of your speakers. There is also an option called “Measured” where you use an iOS device to calibrate the device according to your room’s acoustics.
I used my iPad to make a measured calibration of my living room. I noticed a big difference between the settings.
I also used the LAPC speaker calibration feature with my Sony SSCS5 bookshelf speakers. This feature supposedly calibrates the amplifier to work well with any speaker you have on hand. However, I couldn’t hear much difference when toggling this feature on and off.
I mostly tested streaming music using Amazon music and everything sounded great with this setup.
This is probably my favorite amplifier as I think it produces a very natural, well balanced and neutral sound that feels “pristine”. All genres of music sounded great to me. Vocals and instruments sounded crisp, clear and precise.
I was most interested in testing out the HDMI connection to see how well the Technics SU-GX70 would function as a home theater receiver. This was the one feature that was missing in the SA-C600 that I wished it had and I was very happy to see that the SU-GX70 now includes this feature.
I connected the Technics SU-GX70 to my TCL’s HDMI ARC port and set the TCL to output in uncompressed format. The Technics SU-GX70 can’t process Dolby Audio so we need to set the TV to output in uncompressed or LPCM format.
Overall I think the Technics SU-GX70 worked well as a home theater receiver and is a great alternative to a basic 2.1 soundbar system.
I did notice some inconsistencies where some material sounded really great while for others it just seemed okay. Playing back movies using my Sony 4K Blu-ray player sounded fantastic. I thought the SU-GX70 provided a nice wide soundstage with crisp and clear sound and good dialog clarity using just stereo speakers and a subwoofer.
For some reason, I thought Loki from Disney Plus felt a little subdued and I wanted the ability to boost the dialog up to make it more clearer to me. I didn’t experience this with other shows on other streaming services such as One Piece on Netflix which sounded really great to me.
I think that the home theater experience could be improved if the Technics SU-GX70 natively supported Dolby Audio formats so that it can decode the audio itself instead of relying on an external component to decode the audio and send it to the SU-GX70 as LPCM. This might provide a more consistent listening experience with such material. In addition, it would also be great if the SU-GX70 supported audio enhancements such as a dialog mode and night mode.
Overall, I think the Technics SU-GX70 is a fantastic product. It’s perfect for someone who wants a high end music audio system that can also double as a home theater system but does not want to have a bulky complicated surround sound setup. It is compact and has a really nice elegant look to it that should look nice in any room. Listening to music and watching videos with it has been an immense pleasure. I can give the Technics SU-GX70 my highest recommendation.
CDF3 –
The Technics SU-GX70 Network Integrated Audio Amplifier is a great piece of audio equipment. The unit does quite a bit and did more than I expected. The unit was also much heavier than I expected too. It’s something you won’t be carrying around too often. Once you put it in place, it’ll most likely stay there until the need to move it again arises. There are quite a number of input sources on the back of the unit. Connections such as Phono, Optical, USB-B, LAN, RCA inputs, and HDMI ARC. The HDMI ARC is useful for connecting your TV to it via an HDMI cable and setting it up with your home theater system. It also comes with a radio antenna cable for using the built in FM Radio tuner. It has 4 speaker output connectors. However, I do wish it came with 1/4” outputs. That way I could connect it to my speakers that have 1/4”inputs. Since it does not, I’m unable to use those speakers which is a slight disappointment in my situation. The unit has built in Bluetooth and WiFi connection. It was easy connecting it to my WiFi network using the built in Chromecast feature. During setup the connection failed and was not able to connect to my WiFi network, but the very next screen allowed me to enter my WiFi connection password, and setup was then successful. After Chomecast setup was successful, it installed a Firmware update. Connecting it to my Apple Home was very easy as well. I didn’t have to do anything special. When I went to AirPlay to select my source, the SU-GX70 was already available. No issues setting it up via Bluetooth. The display on the front has touchscreen capabilities on the bottom half of the display. It allows me to Play/Pause, Forward, & Reverse tracks that are being played. The knob is used to scroll through the many input selections. It would be nice if it had a larger display so I could quickly select a source, instead of scrolling through all of them. The sound quality that comes out of the unit is top notch. Overall, I’m pleased with the performance and ease of use.
Caladbolg –
The Technics Network Integrated Audio Amplifier SU-GX70 is as dense as it is powerful, and I’m almost embarrassed to admit how it overshadowed my 7.2 AV receiver…
The construction of this unit is top-notch, with every knob feeling tight and precise. The setup is generally straightforward: power on the device and follow a series of steps using the associated app on your phone. This process mainly assists with establishing a network connection if you haven’t already connected it via RJ45, and it also provides a means to control the input and playback where available. I absolutely love the subtle touch controls on the face of the unit. They operate without any lag, and there’s never a moment of doubt that a command has been registered, thanks to the confirming beep (which can be disabled in the settings menu accessible on this screen or via the app).
I paired this amplifier with two ceiling-mounted, down-firing speakers and a 10” ported subwoofer that complements my home theater setup. I was blown away by how effectively it drove the speakers. It seemed to unlock a dimension of my speakers that I hadn’t experienced in the five years I’ve been using them.
My first test was with the phono input, playing some new vinyl I hadn’t listened to before. The sound was perfect — so clear and robust, even with stock settings post-app setup, and on speakers that might technically be considered a bit small for this application. If there were any lows missed by the ceiling set, the subwoofer adeptly filled the gap with the output from this amp’s pre-out.
The performance was equally impressive with streaming. Considering the high-quality audio available with premium streaming services, and the speed at which it’s delivered, this unit is an excellent choice for an upscale 2.1 channel amplifier setup. It helps you make the most of your space and acoustics. I assume the option to use high-quality audio while streaming is enabled on this device, though it’s hard to confirm. Nonetheless, Spotify sounds incredible as it is. Truly remarkable.
A welcome feature in this version is the addition of an HDMI ARC connection, absent in previous models. This allows the unit to double as a 2.1 channel receiver, broadening the potential user base. Those who might hesitate to invest in this without such a versatile connection will find it a game-changer. I’m confident that anyone going this route will be anything but disappointed.
MTCowboy –
Technics has created a diamond of product with the SU-GX70 Grand Class Network Integrated Audio Amplifier. In a time when everyone seems to be flooding the market with inexpensive streamers the SU-GX70 reminds us that there is a reason that audiophile products exist.
The unit has very solid build quality with a satisfying heft to it. The front panel sports a minimalist design and in fact I would argue that the front display panel is too small to be useful if you’re sitting more than a few feet away. However, the Technics Audio Center app can fill in by offering a comprehensive set of (text only) screens on your phone.
Setup was easy and I experienced none of the usual glitches using an app. The amplifier integrates with the Google Home app and automatically sets up your WiFi connection.
I paired the SU-GX70 with a pair of Bowers and Wilkens bookshelf speakers, connected the included FM antenna, plugged in the AC power and was off and running! The included remote control is not backlit but that is the only criticism I can think of. It is comprehensive and has a good feel. Again, because the display is so small, you will find that you effectively navigate blind. However the button assignments are intuitive and after a few hours I was comfortable.
I put the amplifier through its paces with multiple sources. Started with Spotify from my phone, switched to FM radio, tested casting from multiple apps, everything worked flawlessly and sounded good. Then I really pushed the boundaries expecting to expose any rough edges. I loaded a USB thumb drive with HD FLAC files and started critical listening. Guess what? Everything played! No dropouts, lockups or hiccups! So I switched over to my NAS library and once again everything just worked! Navigating with the remote was flawless and I’ve enjoyed rediscovering some of my library that was buried several folders deep!
In summary – this device deserves its “audiophile” designation and would be a great addition to anyone’s system. Highly recommended.
IronHorseGPS –
The Technics – Grand Class Network Integrated Audio Amplifier SU-GX70 provides all the modern quality of sound and design expected from audiophiles and basement cinemas, while giving you the classic look and feel of the glory days of Hi-Fi and stereo systems. The GX70 brings technology to the forefront by using the classic features many are used to while merging solid state and digital components necessary for the changing audio world around us.
I found this system to be an amazing blend of retro feel-good from when I was a kid enjoying music from my father’s stereo system and the innovations I want today for my home theatre and music listening pleasure. Minimalistic on the front with all the business in the back allows you to connect everything from you TV to your Turntable; your surround sound to your Bluetooth devices. Nearly every connection you can consider, this amplifier has! HDMI Arc is perfect for that home theatre setup!
PROS
– Technics brand, quality, and design
– Minimalist front looks good in any room
– High Quality sound with plenty of lows, mids, and highs to ensure the best sound experience
– Numerous inputs and outputs allows nearly any audio connection needed
CONS
– None at this time!
GEJF –
My first 2 Technics sound equipment were a Tape Deck and turntable. They were awesome and lasted decades, delivering high fidelity sound for years. So I have been a fan of Technics brand for a long time.
But wow! This amplifier was a pleasant surprise. At first glance, it seems like a vintage stereo system. It has a left and right channel stereo and based on the specification an excellent signal to noise ratio, with high quality semiconductors on Power supply and the independent amps. I would be totally ok if it was only that. I love a good performance amplifier, and I was sure that this one would deliver great. But this unit does much more than that.
There were many things that I liked about this Amp, starting from the setup, it comes with a physical manual! It is true that page 4 has a QR code where you can download a more detailed manual, but the printed manual and the quick start guide helps me a lot to start using the SU-GX70 without having spending too much time and putting my glasses to read the pdf on the phone. Don’t be fooled by the slim design and its weight (17 x 4 x 13in), it looks small but this amp is very powerful with a neat sound. The finish feels well-made and works straight out of the box. Very intuitive to use, all the controls are available and easy to understand, whether you use the physical dials, the Remote Control, or the app. The look resembles the old vintage classy 70s amplifiers like the times when sound systems were built to last with exceptional performance.
It has a full metal chassis, with touch screen display. Supports impedance from 4 to 16 ohms, with a 80Watts RMS per channel at 4 ohms. The design is simple, but elegant. On the front you have a “USB-A”, that will allows you to play mp3, or if you want to apply a firmware update this is the port you have to use, and there is a 6.5mm headphone jack. At the back, the RCA inputs for moving magnet phono stage, L-R RCA for Line in 1, L-R RCA for Line in 2, FM Antenna (so it comes with traditional FM radio!), Coaxial input, 2 optical ports, 2 RCA preouts for either an Amplifier or Subwoofer, an Ethernet port, Speakers left and right terminals, a “USB-B” port where you can connect the PC or any other device with ta USB 2.0 cable, and I left this one for the end, because is my favorite, the ARC HDMI port.
Inside the box you will find The Amp, FM antenna, Remote control, 2 AAA batteries, the user manual and a quick start guide.
So I started with the quick guide, following the easy 4 steps, changing the setting from “off” to “on” for the Wi-Fi (you will see this on the front display of the unit, and you have to use the arrows on the RC), and downloaded the Google home app on our phone by scanning the QR code, because it has a Chromecast built in, you can connect the unit to the Wi-Fi, and both, either phone or tablet and the SU-GX70 should be in the same Wi-Fi network. On the Google Home you assign a name to the unit, but keep in mind that this name is the one that will be listed in the BT device list on your phone when you want to pair it and if you want to stream music through BT, so now the unit is ready to stream music over Wi-Fi, using the google home and all the audio apps available to cast. So I played different sources, starting by casting Spotify, Line in using a Cd player, phono input with my turntable, and I also connected a USB drive with some mp3’s. Crispy and pure sound, very satisfying.
On the front you have two knobs, Volume control and input selector, and the power. Simple and intuitive was the whole learning process that I experienced while I was playing with this unit.
You can also install the “Technics Audio Center” app. You can stream via Wi-Fi or Ethernet, and from here, you have many different options, many of them listed on the Technics app for streaming: Amazon Music, Spotify, Tidal, Internet Radio, Qobuz. The physical inputs can also be selected through the app as well, and you can adjust the Balance between left and right, tone, ad there are some sound digital filters for each input, and you can even power off the unit from this app. There are a lot of different features that this amp can offer, that I am not sure where to begin. Let me start by saying that I found out with this unit that Technics/Panasonic made sure that everything was built at a high quality and high res streaming amplifier from the source, either analog or digital, to the end. The first hint that lead me to that conclusion was that this amp have independent power supplies per amp and for the other circuit functions, with a fully digital amplifier. If I recall correctly from what I read, this design will ensure to prevent any noise on the process to the final sound you want to hear, clean and neat and has remarkable channel separation and wide soundstage. The front touch screen display is really useful and easy to operate.
For me the a decisive test was the phono input for turntable. Phono input is a challenge for any amplifier, since the there is a long way to run from the preamp phono stage, then digital processing and the final Power amp. The speakers I used for testing were a set of Martin Logan F-100, a Klipsch Subwoofer and a Technics/Panasonic turntable with a blue Ortofon cartridge. I played the Beethoven 9th Symphony. I heard the Finale many times, it was so clear, with a perfect balance between the volume variations, I didn’t need to increase the volume too much because this amp delivers with so much clarity and provides the tiny details of every instrument of the orchestra, as well as the chorus, very impressive. No distortion even going all the way up with the volume.
Then I started to stream music of all kinds, classical, Rock, Country, mostly over Wi-Fi, and even if I am not a huge fan of BT streaming, I paired my phone for BT connection using the Technics app, very easy. But streaming over Wi-Fi was like listening to a CD player. Now, you have to take in consideration that this amp is focused on playing music, and streaming. Music typically have been recorded in 2 channels, left and right, either monoaural or Stereo, and this is what this amp does the best, plus the excellent streaming capabilities. On the other hand, for movies, market offers Home Theaters where you can have the 5.1 or 7.1 audio signal decoding in order to reach a surrounding effect. However, I was willing to try the ARC HDMI port to see what can I get.
I connected the HDMI ARC port to my Sony Bravia and Sony Blu Ray so It will turn the amp into a 2.1 home theater. The TV adjusted automatically the digital format, and I can say that it was a really pleased, watching Avatar, Top Gun, the explosions, jet rumble, makes the whole living room shakes. So with the Technics SU-GX70, basically you can have the 2 worlds, Music and Movies in one unit.
I am very happy that finally I have the perfect complement for my Technics Turntable, ensuring an outstanding high fidelity sound. This is the long time missed amplifier designed to guarantee neat and powerful sound experience, doesn’t matter the source, and much more.
vrs99 –
When our Technics SU-GX70 arrived home, I was looking primarily for two main features, one being music, pure Streaming from our devices and most importantly a new platform for our home entertainment center. A platform that can manage and power our system while delivering front stage sound. It does.
The SU-GX70 Integrated Network Audio Amplifier is a precision system from the hairline brushed aluminum front panel, through their latest exotic technologies found within, many that are borrowed from their high-end units to the minimalist design which is striking.
With the addition of Technics first HDMI ARC support, proprietary to Technics it offers a power platform for the home entertainment theater. Our first take at home is the SU-GX70P performance is amazingly flawless!
– “Newly equipped with an HDMI ARC, low-impact HDMI video output ensures users can enjoy high-quality music and audio from the video source.”
The SU-GX70 Pushes 40w per 8-ohm channel and had my Boston Acoustics towers rocking from the vinyl and delivering Filmmaker mode music theatrically during movies. The best I can describe the experience is the system digs in and brings out the details with 100% consistency. The high, mid-range and bass all strike the right tune. If you listen closely, you may hear the drum pedals. It is that good. The SU-GX70 adds no coloration to the music/output, it is transparent.
My system delivers especially high volumes, and Technics reached those highest levels with ease. If one wishes for more power, there is the pre out ready to raise that bar.
Connections:
– Dual Band Wi-Fi
– Ethernet wired
– Bluetooth/Airplay
– Native Spotify
– Native Amazon Music
– HDMI/ARC
– Headphones
– Phono in
– Chromecast
– USB
– FM Ant
– Coax
– Optical (2)
Notes:
– Jeno Engine; “used in the HDMI ARC, helping reduce degradation in sound quality caused by jitter during the transmission of digital audio signals” Very Cool
– Pure Amplification Mode: simply stated the power supply is shut off to the network and HDMI removing “noise from the device or antenna.” Assuring clarity of the playback.
– Twin Power Supply Circuit System
– Analogue Input Using Discrete Amp Circuits – this bit of technology was adapted from the circuit used in the SU-R1000; their $10,000 Integrated Amplifier – Technics has history of borrowing from their cutting-edge productions and adapting the following developments. Lucky us
The Technics SU-GX70 Network Audio Amplifier is a completely Digital system in all stages of processing. A blend of high-resolution audio and soft textures on the analogues. Amazing stuff, seemingly electronic wizardry for which the Technics is known.
Cut to the chase, there is far too much tech built into the Technics SU-GX70 Network Integrated Amplifier to explore in my review, thus I encourage you if you are looking at the SU-GX70 to visit Best Buy and Technics sites for the whole story. It is a good story.
For the Bottom-Line, the amp is pure joy, love the looks, love the tunes, from the take offs on the decks of Top Gun to the gentle moments in Bridges of Madison County.