The SU-GX70 Stereo 80-Watt Network Integrated Amplifier in silver from Technics is a heavily featured streaming amplifier for your digital, analog, and wireless audio sources. With a discrete amp circuit redesigned and adapted from Technics Grand Class components, the SU-GX70 is designed for high-quality audio, no matter what you're listening to.

2-Channel Amplifier Configuration    40W per Channel RMS Output at 8 Ohms    Full Digital Amplifier    JENO Engine    HDMI ARC    1 x MM Phono & 2 x Stereo RCA Inputs    1 x Digital Coax & 2 x Optical Inputs    Built-In Wi-Fi    Bluetooth & Airplay 2 Support    Spotify Connect & Chromecast Built-In

The SU-GX70 uses a fully digital amplifier that incorporates Technics' renowned digital audio technology. Its digital transmission system processes signals fully digitally in all stages from input to output. Compared to analogue transmission, this system is less susceptible to signal degradation caused by external noise, ensuring more precise signal transmission. Accurate signal processing not only delivers high-resolution digital audio but also maintains the soft texture inherent in analogue recordings.

This full digital amplifier features a wide variety of inputs including, Optical, digital coax, and HDMI ARC to seamlessly integrate into a home theater system with a TV. Analog sources include built-in FM radio, an MM Phono input, and two stereo RCA inputs with Pure Amplification Mode.

The SU-GX70 can play back high-resolution music wirelessly from the source stored in a smartphone, tablet or PC. It supports not only Bluetooth and AirPlay 2, but also Spotify Connect, Internet radio, and Chromecast built-in so that a wide range of music streaming services can be enjoyed. In addition to wireless streaming, you can connect to your network with the Ethernet LAN input, or connect a PC or flash drive directly via USB.

A JENO Engine has been used in the HDMI ARC (Audio Return Channel). This helps to reduce any degradation in sound quality caused by jitter during the transmission of digital audio signals, ensuring unparalleled levels of clarity in TV audio.

Speaker impedance changes with each frequency, and a power amplifier is required to drive speakers without being affected by the speaker’s characteristics. However, conventional digital amplifiers are connected to speakers through a low-pass filter at the output stage, so they are even more strongly affected by the speaker impedance characteristics. Also, although the amplitude characteristics of conventional amplifiers due to negative feedback were improved, the phase characteristics could not be enhanced.

Technics thus developed a speaker impedance adaptive optimization algorithm that 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. This technique enables flattening of the frequency characteristics of amplitude and phase, which had previously not been achieved by amplifiers, while also delivering a sound with rich spatial expression.

The design of the power supply is extremely critical in audio systems containing amplifiers, digital circuits, and other such components. To eliminate any adverse effects on the amplifier, the SU-GX70 is equipped with a dedicated power supply for the power amplifier circuits that is independent from all other circuits. As such, the same electrolytic capacitors installed in high-end models have been used in the dedicated amplifier power supply and the power amplifier components.

For the SU-GX70 to receive audio signals through the HDMI ARC (Audio Return Channel), due to the specifications, video signals must first be output from the SU-GX70. However, the output of these signals can cause unwanted noise.

As such, the video signals are output from the SU-GX70 at a lower rate, and the digital value of the color of each pixel is set to zero. This ensures low-load operation between the HDMI transmitting/receiving devices, preventing any unwanted noise generation from the video signals.

This also reduces any impact on sound quality. Further, transmitting the signals from the TV to the JENO Engine via the shortest possible route minimizes any further impact from jitter. This is a mechanism unique to Panasonic/Technics as HDMI licensors.

In Pure Amplification Mode, shutting off the power supply to the network and HDMI circuits removes any noise from the device or antenna. This ensures music playback with even better clarity.

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. Further, other high-quality audio parts of the same grade as those used in the SU-R1000 have also been adopted, such as low-noise FETs, thin-film resistors, film capacitors, and electrolytic capacitors. In this way, analog input has been fine-tuned to every detail.

The SU-GX70 is equipped with the Space Tune function, which enables the adjustment of sound space according to the room environment and installation location so that anyone can enjoy superb music reproduction.

By using the Technics Audio Centre app for iOS devices or by selecting a setting from the four presets—Free, Wall, Corner and In a Shelf—using the main unit according to the installation location, the user can achieve the most suitable sound quality for a specific acoustic environment.

Furthermore, the L/R Custom feature lets the user enter the setting independently for the left and right speakers when the speakers are set up in different installation conditions. This brings out the best sound reproduction in any installation conditions.

• 30W per channel FTC rated output power
• 7mm thick aluminum front panel
• Solid aluminum volume knob
• Stereo RCA pre out
• 1/4" headphone output 
• MQA decoder

Related Questions and Answers

Q: 1. How does this fair as a sound bar for a TV in a small 12 x 12 room?

A: It would be good for a small size TV and room.

Q: 2. Do this come with remote control?

A: Yes, the Onkyo TX-8470 Stereo Network A/V Receiver comes with a remote control.

Q: 3. Does anyone use the digital audio port of the soundslayer with a m1 macbook pro? and if so, how did you manage to make it work?

A: To be able to go from the headphone output of your computer into the optical input on the Panasonic SC-HTB01PP soundbar, you will need to use BH #GEATVDA.

Q: 4. the sound is really good with good bass and trebles clear ?

A: This speaker provides a well balanced range of tone for general monitoring situations.

Q: 5. can i connect a tape cassette player to this system?

A: Yes. You can use BH #KOSMYCM2RM06 to connect the RCA stereo output of a cassette deck into the 1/8'' input on the Technics OTTAVA f SC-C70MK2.

Q: 6. I can I use this system as a home theater with my T.V?

A: The Technics OTTAVA f SC-C70MK2 Tabletop Network Radio and CD Player (Dark Silver) BH #TESCC70MK2 does have audio inputs that can accept Optical TOSLINK from a TV.

Q: 7. Any customs duties included

A: The Roland Mobile Cube presently sells for $179 USD. Any additional fees such as duties, tax, and VAT are not included in this price.

Q: 8. I am looking at the Yamaha amplifier AS 30l to upgrade my old system. I have Bang & O Danish speakers with free wires at the end of each cable. I see no place for free wires on this amplifier or the Yamaha AS500. It looks like I need the RCA Male Stereo Audio cable end pieces. If this is correct, would you let me know please. All of this is for a 32 inch Smart TV which is the largest size which will fit the space. The picture is great, but the sound options are driving my audiophile ears crazy. I do see a way to get the TV audio into the amplifier and that is by the digital audio output (optical), but no such place appears on the Yamaha AS500. There is a single audio output hole on the back of the TV, but that is beyond my ancient experience. I dont see an audio input on the amplifier of one hole. Am I wrong?My laptop enlarged image of the back of the amplifier leaves a lot to be desired. You will be happy to know that there is no problem with my Sony CD/DVD player which was purchased from you. I will also use my B & O turntable and be able to play my vinyl records again. As I said, we are talking older or ancient!

A: This receiver offers binding posts that will accept bare wire speaker leads.

Q: 9. Can I connect this system to my MacBook Pro? to watch movies with a nice sound.

A: According to page 65 in the manual for the Technics OTTAVA f SC-C70MK2, you can use Apple Airplay with a Macbook Pro on the same wi-fi network as the Technics OTTAVA f SC-C70MK2, to connect them together. You can also use an 1/8'' TRS cable from the headphone output on your computer into the 1/8'' audio input on the Technics OTTAVA f SC-C70MK2.

Q: 10. does the amp come with alternate switch for use on 240volt power grid as opposed to the 110volt power in the U.S?

A: No 240 volt option. 110 volt only formthe model sold in the US.