Technics SU-GX70 Grand Class Network Streaming Amplifier

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SU-GX70 Grand Class Network Amplifier. The definitive living room audio center that enables seamless enjoyment of video, audio, and music through next-level integration using Technics’ full digital technologies.


Sale price$3,199.00
Colour: Silver

Key features

HDMI ARC, low-impact HDMI video output

Bluetooth® and AirPlay2

Spotify Connect®, Internet radio

Google Cast™ And Roon Ready

Tidal connect And Amazon music

Technics SU-GX70 Grand Class Network Streaming Amplifier

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Technics SU-GX70 Grand Class Network Streaming Amplifier

The Technics SU-GX70 Grand Class Network Amplifier is designed to be the ultimate living-room audio hub, combining high-end sound performance with modern connectivity and streaming capabilities. Built with Technics’ advanced full-digital amplification technologies, this amplifier delivers exceptionally accurate sound reproduction while maintaining the warmth and character music lovers appreciate. Whether you are listening to high-resolution music files, streaming wirelessly, or watching TV through HDMI ARC, the SU-GX70 provides a seamless and immersive audio experience.

This amplifier is not just a traditional stereo amplifier—it is a complete entertainment center that integrates digital audio processing, network streaming, HDMI connectivity, and precision engineering in a single elegant unit. Technics has carefully engineered every component—from the JENO Engine to the twin power supply system—to reduce noise, eliminate jitter, and preserve musical detail. The result is a refined soundstage, precise imaging, and powerful speaker control that elevates both music and movie audio.

With support for high-resolution audio formats, multiple digital and analogue inputs, and modern wireless streaming technologies like AirPlay 2, Google Cast, Wi-Fi, and Bluetooth, the SU-GX70 adapts perfectly to today’s listening habits. Its Pure Amplification Mode and advanced speaker optimization technologies further ensure that the sound remains clean, dynamic, and faithful to the original recording. For anyone looking to create a premium yet versatile hi-fi system, the SU-GX70 stands out as a powerful and future-ready solution.

Technics SU-GX70 Grand Class Network Streaming Amplifier

Advanced Full Digital Amplification - JENO Engine

The SU-GX70 uses Technics’ Full Digital Amplifier technology combined with the JENO (Jitter Elimination and Noise-shaping Optimisation) Engine, ensuring extremely precise signal processing from input to output. By maintaining a completely digital signal path, the amplifier minimizes signal degradation caused by noise or interference.

This technology significantly reduces jitter during digital audio transmission, resulting in cleaner sound, greater detail, and improved clarity. It also preserves the natural softness and musicality of analogue recordings while delivering the precision expected from high-resolution digital audio.

Technics SU-GX70 Grand Class Network Streaming Amplifier

LAPC Technology for Perfect Speaker Matching

The amplifier features Load Adaptive Phase Calibration (LAPC), a sophisticated technology that measures the impedance characteristics of connected speakers. Using this data, the system digitally corrects both amplitude and phase response to achieve the ideal impulse response.

This results in more accurate timing, improved tonal balance, and a wider soundstage. The music sounds more natural and spacious because the amplifier adapts itself to the speakers rather than forcing speakers to adapt to the amplifier.

Technics SU-GX70 Grand Class Network Streaming Amplifier

Twin Power Supply System, Cleaner & Stronger Sound

Technics designed the SU-GX70 with a Twin Power Supply Circuit System, separating the power supply for the amplifier stage from the other digital circuits. This separation prevents electrical interference that can degrade sound quality.

The high-speed switching power supply operates at approximately 130 kHz, which reduces noise within the audible range. As a result, the amplifier can deliver faster response to musical signals and drive speakers with greater control and power.

Technics SU-GX70 Grand Class Network Streaming Amplifier

HDMI ARC Integration for Premium TV Audio

Unlike traditional stereo amplifiers, the SU-GX70 includes HDMI ARC connectivity, allowing it to integrate seamlessly with modern televisions. This makes it easy to upgrade your TV sound to high-fidelity stereo performance without complicated setups.

Technics also designed a low-impact HDMI video output system that minimizes noise from video signals. This ensures that audio transmitted from your TV maintains high clarity and detail without interference from video processing.

Technics SU-GX70 Grand Class Network Streaming Amplifier

Pure Amplification Mode for Ultra-Clean Music Playback

The Pure Amplification Mode disables network and HDMI circuits to eliminate any electrical noise they might introduce during music playback. By shutting down these components, the amplifier focuses entirely on delivering the purest possible audio signal.

This feature is especially beneficial for critical listening sessions where clarity, detail, and soundstage precision are essential. It allows the SU-GX70 to perform like a dedicated high-end amplifier when listening to music.

Technics SU-GX70 Grand Class Network Streaming Amplifier

Wide Connectivity & High-Resolution Streaming

The SU-GX70 supports a wide range of high-resolution audio formats, including WAV, FLAC, AIFF, ALAC, DSD, and MQA decoding. This ensures compatibility with modern high-resolution music libraries and streaming platforms.

With built-in Wi-Fi, Bluetooth, AirPlay 2, and Google Cast, users can easily stream music wirelessly from smartphones, tablets, or computers. Combined with multiple analogue and digital inputs—including phono for turntables—the amplifier becomes a versatile hub for all audio sources.

Technics SU-GX70 Grand Class Network Streaming Amplifier

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