Description
SU-G700M2
Grand Class Stereo Integrated Amplifier
The SUG700M2 represents Technics’ untiring efforts to constantly improve even its most accomplished audiophile products.
With the new SU-G700M2, advanced technologies derived from the Reference SU-R1000 Integrated Amplifier have been adapted to set a new standard at this more accessible price point.
Modern digital amplification technology meets a timeless design aesthetic with analog VU meters. The SU-G700 M2 inherits Technics’ full-digital core amplifier technologies, such as the JENO Engine (Jitter Elimination and Noise-Shaping Optimization) for highest signal precision free of jitter and distortion, and LAPC (Load Adaptive Phase Calibration) for optimal matching to any speaker.
Integrated amplifier achieves incredibly clear and dynamic sound quality
- The JENO Engine transmits and processes audio signals in full digital with minimal jitter from the input stage to the power stage.
- The LAPC enables an ideal impulse response for any type of speaker.
- The Advanced Speed Silent Power Supply achieves both high-speed switching and low noise.
Maximally reduces noise and vibrations to achieve dynamic sound reproduction, with a high build quality
- The interior of this unit is divided into three independent sections by the inner chassis: an isolated power supply section to reduce noise, power amplifier section handling high currents, and terminal section handling fine signals.
- In addition to this three-section construction that eliminates mutual noise effects, the Double Steel Plate Chassis with a high-rigidity inner chassis and bottom 2 mm steel plate is provided to maximally reduce noise and vibrations.
- The excellent build quality appeals to listeners’ sensibilities. Large twin peak power meters on the front panel vividly display the dynamics of the sound, and the volume knob uses pure solid aluminum for superior operation.
Supports analogue and digital sound sources with high-quality sound technologies
- Compatible with MM/MC cartridges, the low-noise PHONO circuit to allows record reproduction with a better signal to noise ratio.
- High-quality ruby mica condenser for USB input.
- Class AA headphone amplifier built-in.
- Digital Noise Isolation Architecture with power conditioner, and Optimally Activated Circuit System to minimise inner noise by partially stopping unnecessary circuit blocks.
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-G700M2 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-G700M2 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.
LAPC (Load Adaptive Phase Calibration)
An ideal power amplifier drives speakers without being affected by the speaker’s characteristics. However, speaker impedance changes with each frequency.
Since conventional digital amplifiers are connected to speakers through a low-pass filter at the output stage, 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 therefore developed a speaker impedance adaptive optimisation 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 new technique enables flattening the frequency characteristics of amplitude and phase, which had previously not been achieved by amplifiers, as well as delivering a sound with rich spatial expression.
What’s more, a Super Low Noise Regulator is provided in the later stage. It prevents the decrease of regulation due to fixed switching frequency and impedes the mixing of noise component into high frequencies. The result is a low-noise and high-response power supply that maximises the performance of the digital amplifier.
Technics is renowned for its turntables, so turntable connectivity was a focus for this amplifier.
The SU-G700M2 uses a Class AA headphone amplifier with separate amplifier circuits for voltage amplification and current amplification of the audio signal.
Technics’ exclusive block capacitor: The power supply unit for the amplifier features Technics’ exclusive block electrolytic capacitor optimised through scrupulous tuning, which was installed in the SU-R1000.
Advanced Speed Silent Power Supply
The power supply technology incorporated in the reference-class model SU-R1000 has been employed for improved speaker drive power and a greater feel of energy.
The switching frequency has been increased from the conventional 100kHz band to the 400kHz band to ensure stable supply of voltage and current and to reduce adverse effects of modulation noise on the audio quality. The device is equipped with the same GaN FET and SiC SBD as those mounted in the SU-R1000 to deliver maximum performance from the high-speed switching power supply system.
What’s more, a Super Low Noise Regulator is provided in the later stage. It prevents the decrease of regulation due to fixed switching frequency and impedes the mixing of noise component into high frequencies. The result is a low-noise and high-response power supply that maximises the performance of the digital amplifier.
Three Section Configuration
In integrated amplifiers there are a variety of circuits, including circuits that handle the micro-signals of inputs and those that handle a large current, such as output circuits and power-supply circuits.
The SU-G700M2 uses a three-section construction with partitions installed between the circuit blocks according to the signal level handled. This eliminates interference between circuit blocks, thus achieving clear sound quality.
In addition to the three-section construction, the SU-G700M2 comes with a bottom chassis featuring a two-layer construction with 1.2-mm-thick and 2-mm-thick steel plates, a top panel made of a 1.6-mm-thick steel plate and a 7-mm-thick aluminium front panel for improved vibration damping.
Low-noise PHONO Input
MC input is now supported in addition to MM.
The PHONO input achieves low noise by using a differential parallel connection configuration of a first-stage, low-noise FET. In addition, four-level gain adjustment enables selection of the best gain according to the cartridge output. This enables optimal playback of high-grade analogue recorded sound sources tailored to the user’s environment.
Class AA Headphone Amplifier
The voltage is amplified by a high-grade operational amplifier, the current is amplified by an operational amplifier with high current-supply capability, and the high-grade PWM signal output from the JENO Engine is converted to analogue with high precision, thus enabling headphones to be ideally driven.
This makes it possible to reproduce music with low distortion and a wide frequency range no matter what the load impedance of the headphones is.
High-Grade Parts
Large ground terminal: The large ground terminal accommodates a thick, large-diameter ground wire
Brass speaker terminals: The screws used for securing the wires sending audio signals to the speaker terminals are made of nonmagnetic brass
Specifications
Amplifier
Output Power 70W + 70W ( 1kHz, T.H.D. 0.5 %, 8Ω, 20kHz LPF ) | 140W + 140W ( 1kHz, T.H.D. 0.5 %, 4Ω, 20kHz LPF )
Load Impedance 4Ω-16Ω
Inputs / Outputs
Analog Inputs LINE x 2 (LINE1, LINE2 / MAIN IN), PHONO x 1 (MM / MMC)
Digital Inputs Optical digital x2 (OPT 1, OPT 2), Coaxial digital x2 (COAX 1, COAX 2), Asynchronous USB-B x1 (PC)
Analogue Outputs LINE OUT x1, PRE OUT x1
Headphone Output Stereo 6.3 mm
Support Codecs PCM (32, 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz / 16, 24, 32 bit), DSD (2.8 MHz, 5.6 MHz, 11.2 MHz)
General
Power Supply AC 120 V, 60 Hz
Power Consumption 85 W
Dimensions (W x H x D) 430 mm × 148 mm × 428 mm |16 15/16 in x 5 13/16 in x 16 27/32 in
Weight Approx. 12.6 kg | Approx. 27.2 lbs
Accessories AC Cord, Remote Control, Batteries for Remote Control, Owner's Manual
Specs
Dimensions
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