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Technics SU-G700S Grand Class Stereo Integrated Amplifier

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For analogue audio output, the D/A circuit is one of the most important circuit blocks since it recreates the original analogue waveform from a digital source, such as a CD. For the D/A converters, Asahi Kasei Micro devices’ top-of-the-line DAC AK4497, with their high S/N ratio and low distortion, are isolated for the left and right channels. The power supply for the D/A converters is separated into five sections according to the application, and supplied individually. The power supply for the clock employs an original Battery Driven Circuit System to achieve high-accuracy D/A conversion. The Dual Mono Construction and asymmetrical layout eliminate mutual interference between left and right channels, taking the reproduction of sound imaging and sound space recorded in the source to a higher dimension.

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Technics SU-G700S Grand Class Stereo Integrated Amplifier

Reference-class High-quality Audio Technology

Inheriting the reference-class audio technology concept, the JENO Engine transmits and processes audio signals in full digital and with minimal jitter from the input stage to the power stage. Speaker load adaptive phase calibration (LAPC) ensures ideal gain and phase characteristics for any type of speaker. The newly developed low-distortion switching power supply realises accurate power supply by suppressing switching frequency fluctuations caused by load shifting.

JENO Engine (Jitter Elimination and Noise-shaping Optimization)

In order to faithfully transmit the massive amount of audio data sent to the speakers without loss, the SU-G700 power amp section uses full digital amplification employing the JENO Engine, based on the design concept of reference systems. In order to solve the issue of sound quality degradation due to jitter, which poses problems for conventional digital amplifiers, the SU-G700 has an original jitter reduction circuit that eliminates jitter over the entire audible frequency range. Also, a unique, high-precision PWM (Pulse Width Modulation) conversion circuit is used for PWM conversion, which is important for sound quality. By optimising items such as the noise-shaping speed, degree, and quantization number through our unique expertise, data even in the wide dynamic range contained in high-resolution sound sources is converted to PWM signals without loss. These technologies provide reproduction of natural and finely detailed sound, enabling perception even of delicate music nuances.

Stereo Integrated Amplifier SU-G700

Show the enlarged photo of the front of SU-G700
Show the enlarged photo of the front of SU-G700
Show the enlarged photo of the rear of SU-G700
Accurate Digital Technology
JENO Engine (Jitter Elimination and Noise-shaping Optimisation)
LAPC (Load Adaptive Phase Calibration)
High-speed Silent Hybrid Power Supply
Battery Driven Clock Generator
High-rigidity Metal Double Chassis
Noiseless Signal Technology
Digital Noise Isolation Architecture
Optimally Activated Circuit System
Technics Definitive Design
High-rigidity Cabinet
Three-section Configuration
FTC Output Power
70 W + 70 W (1 kHz, T.H.D. 0.5 %, 8 Ω, 20 kHz LPF)
140 W + 140 W (1 kHz, T.H.D. 0.5 %, 4 Ω, 20 kHz LPF)
Input Sensitivity / Input Impedance
LINE 200 mV / 22 kΩ, PHONO (MM) 2.5 mV / 47 kΩ
Frequency Response
LINE 5 Hz – 80 kHz (-3 dB, 8 Ω),
PHONO (MM) 20 Hz – 20 kHz (RIAA DEVIATION ±1 dB, 8 Ω),
DIGITAL 5 Hz – 90 kHz (-3 dB, 8 Ω)
Load Impedance
4 – 16 Ω
Analogue Input Terminal
Digital Input Terminal
Coaxial Digital x 2, Optical Digital x 2, USB-B (PC)
Analogue Output Terminal
Headphone Output
USB Audio Class 2.0, Asynchronous Mode
Support Codec
DSDYes (2.8224 MHz, 5.6448 MHz, 11.2896 MHz)
PCMYes (32, 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz / 16, 24, 32 bit)
Power Supply
AC120 V, 60 Hz
Power Consumption
85 W
Dimensions (W x H x D)
430 x 148 x 428 mm
(16 15/16 x 5 13/16 x 16 27/32 in.)
Approx. 12.3 kg
(Approx. 27.2 lbs)
Remote Control, AC Cord, Owner’s Manual

Additional information


Satin White, Black Ash Veneer, Mahogany Veneer

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