Features

JENO (Jitter Elimination & Noise-Shaping Optimization) Engine: In order to faithfully transmit the massive amount of audio data sent to the speakers without loss, the Technics 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 optimizing the noise-shaping speed, degree, and quantization number through Technics' 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): 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 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.

High-Speed Silent Hybrid Power Supply: With a conventional switch mode power supply, the switching frequency changes in response to the load fluctuation in order to control the switching ON time for stabilizing the output voltage. This fluctuation component in the switching frequency has a negative impact on sound quality. The newly developed power supply reduces the noise component harmful to sound quality by fixing the switching frequency. In addition, the latter stage in the switching power supply is provided with a linear regulator to stabilize the output voltage. The linear regulator uses custom, high-definition electrolytic capacitors. What's more, Technics' current resonance-type power supply decreases the level of switching noise. The parts used for absorbing noise, such as capacitors, were carefully selected. All possible measures were taken to achieve low noise and reproduce clear sound.

Digital Noise Isolation Architecture: For the PC input terminals, the amplifier uses power conditioners with non-magnetic carbon film resistors that provide strong protection against magnetic distortion, and high-quality ruby mica capacitors featuring excellent characteristics such as low dielectric loss, high voltage resistance, and temperature stability. Sound reproduction with greater purity was pursued by blocking the incursion of outside noise.

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-G700 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. Also, the chassis rigidity due to this construction suppresses the vibration of electrical parts, thereby suppressing deterioration in sound quality.

Optimally Activated Circuit System: The Optimally Activated Circuit System allows the operation of various digital modules to be stopped - such as those used for display, analogue and digital interfaces - to minimize the noise generated when music is playing.

Battery Driven Clock Generator: The best power supply for delicate circuitry such as the clock generator in new amplifiers is one entirely isolated from any noise or fluctuations in the mains supply. Technics has extensive experience in power supply isolation using batteries. This technology creates ultra-low-noise pre-amplifier stages.

High-Quality Analog Circuit: The analog input is converted with high precision to a digital signal by the high quality 24-bit/192kHz A/D converter [Burr-Brown PCM1804 (Texas Instruments)], so the high-purity sound reproduction capability of the full-digital system can be maximized in playing back analog sources. High-definition switching relays are used for signal switching.

Low-Noise Phono Stage: 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 SU-G700 uses a Class AA headphone amplifier with separate amplifier circuits for voltage amplification and current amplification of the audio signal. 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 the load impedance of the headphones.

High-Rigidity Aluminum Cabinet: The High-rigidity Metal Double Chassis features a steel-plate inner chassis and a steel-plate outer chassis to reduce vibration and noise that degrade the purity of sound. To support heavy parts and components and lower the center of gravity for improved stability, the inner chassis is made of a 1.2mm thick plate. The bottom surface of the cabinet is a 2mm thick steel plate. This improves the vibration damping performance and achieves a low center of gravity. The front-panel is made of a 7mm thick aluminum plate to resist the effects of electromagnetic noise.

Connections

USB-B 2.0 Asynchronous Input: The Technics SU-G700 is equipped with a rear-panel USB-B 2.0 asynchronous input for connection of a Windows PC or Mac computer, so you can listen to your laptop's or desktop's digital music library though the integrated amplifier using Technics Audio Player software application for Windows and Mac. Using the Technics Audio Player software application on your computer, the SU-G700 supports playback of 2ch PCM (16-32 bit/44.1-384kHz) and DSD (1 bit/2.8-11.2MHz) audio files.

• Windows Compatibility: OS 7, 8, 8.1, and 10. A Windows PC will require the installation of a dedicated USB driver. Download and install the driver at www.technics.com/support/.
• Mac Compatibility: OS X 10.7, 10.8, 10.9, 10.10, 10.11, and MacOS 10.12.

Optical & Coaxial Digital Inputs: The SU-G700 integrated amplifier features a two optical (toslink) digital inputs and two coaxial (RCA) digital inputs. The optical digital inputs will support up to 24-bit/96kHz, 2ch PCM audio. The coaxial digital inputs will support up to 24-bit/192kHz, 2ch PCM audio.

Line Level Inputs: The Technics integrated amplifier is equipped with two stereo RCA line-level inputs. You can set the input level to 0, -3, -6, or -10dB. The second line level input can also be used as a "Main In", so you can connect the preout of an AV receiver in order to use the SU-G700 as a power amplifier.

MM Phono Input: The Technics SU-G700 features a MM Phono input for connection of a turntable with an installed moving magnet (MM) cartridge. You can set the MM phono input level to 0, -3, -6, or -10dB.

Line Output: The line output allows you to connect a CD or Tape recorder. You can record signal from the integrated amps two line level inputs or the MM Phono input (does not support USB-B input or Optical/Coaxial digital inputs).

Stereo Preout: The stereo preout allows you to connect a power amplifier or powered subwoofer to the SU-G700 integrated amplifier. You can choose to have both the integrated amp's stereo preout and speaker outputs live at the same time, or only have one or the other activate.

Binding Post Speaker Terminals: The SU-G700 is equipped with heavy-duty binding posts to connect a pair of loudspeakers (4 ohm to 16 ohm). The binding posts will accommodate bare wire (up to 10AWG), pin-connectors, spade-lugs, and banana plugs (single only).

1/4" Headphone Jack: The Technics SU-G700 is outfitted with a front-panel 1/4" headphone jack. When a set of headphones is connected, the integrated amplifier's speaker and preout terminals do not output sound.

USB Update Port: There is a rear-panel USB-A port that is used for service and updates.

AC Power Cord: The Technics SU-G700 comes with a detachable 6' AC power cord (IEC 3-prong).

Controls

Technics Audio Player App: The Technics Audio Player is a music player software application for Windows and Mac with high-resolution audio data processing capabilities. Control functions include Playlist, Play/Pause/Stop, Previous/Next Song, and Shuffle/Repeat.

• Windows Compatibility: OS 7, 8, 8.1, and 10. A Windows PC will require the installation of a dedicated USB driver. Download and install the driver at www.technics.com/support/.
• Mac Compatibility: OS X 10.7, 10.8, 10.9, 10.10, 10.11, and MacOS 10.12.

Front-Panel Display: The Technics SU-G700 integrated amplifier features a front-panel LCD that indicates information such as input source, volume level, and menu settings.

Peak Power Meters: The included IR remote provides full operation of the SU-G700 integrated amplifier. The remote also operates playback functions of the Technics SL-G700 SACD player and streamer (sold separately).

Front-Panel Controls: Front-panel controls include Power On/Off button, a Volume knob (1-100), and a Input Selector knob.

IR Remote: The included IR remote provides wireless operation of the Technics SU-G700 integrated amplifier. You'll still need the Technics Audio Plyaer software application on your Windows PC or Mac computer to playback audio files stored on your laptop or desktop.

Control Input: The Technics SU-G700 features a rear-panel Control Input that consists of a 3.5mm jack. You can operate the SU-G700 and other Technics components (such as CD or Network Audio player) supporting the system control function simultaneously from one remote control.