Grand Class – G30 Series

Grand Class G30 Series consists of two Hi-Fi audio components designed to deliver superlative musical experiences.

Hi-Fi Network Amplifier Achieves Ideal Simplicity and Performance for the Era of High-Resolution Audio.

Network Audio Amplifier SU-G30

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. The GaN-FET Driver performs high-speed switching with minimal loss. The LAPC conducts speaker load adaptive phase calibration to achieve 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.

Ideal Simplicity and Performance Realised by the Most Advanced Digital Technology

The SU-G30 features a built-in network playback circuit with thorough measures against jitter and noise. This achieves a simple circuit structure: it transmits digital audio data through the shortest possible signal path from the music sources all the way to the power stage with extremely low signal degradation, realising uncompromised sound quality and providing a comfortable user interface for seamless app operation.

High-Quality Processing of All Types of Signal Sources Ranging from Legacy to the Most Advanced High-Res Audio

Supporting a diversity of input sources, such as Spotify, Internet radio, digital audio (DLNA, USB, Bluetooth) and analogue audio (Line, Phone), the SU-G30 digitally processes all types of signal source. It also supports the latest high-resolution formats (384-kHz/32-bit, DSD11.2 MHz).

*Compatible music streaming services will be supported sequentially through firmware updates

  • Spotify
  • vTuner
  • dlna CERTIFIED

Hi-Fi Music Server Engineered to Deliver High-Quality Sound and a Premium User Experience for Network Audio

Music Server ST-G30

Hi-Fi-Grade Data Transmission

Equipped with a silent SSD, the Digital Noise Isolation Architecture reduces noise and jitter to the lowest possible levels. The Optimally Activated Circuit System sends high-quality music data to the player. For a USB-DAC, the Low Noise USB Transfer reduces the processing load on the player side and ensures stable USB output power to achieve extremely accurate data transfers.

Bit-Perfect CD Ripping

Bit-Perfect Ripping not only readjusts read error characteristics and performs read retries, but also carries out comparative verification using correct hash values. The internal CD drive is manufactured entirely in-house. It is enclosed in a silent shelter and mounted at the centre of the casing. This Rigidly-Mounted Sheltered Drive minimises the generation of vibrations and noise and enables accurate reading of CD data.

Usability Optimised for Network Audio

The ST-G30 features a user interface that allows a variety of operations, such as creating a music library from a smartphone app, editing the tags and settings of various parameters, thus providing comfortable operation without using a PC. It lets you immerse yourself fully in the music. The internal SSD is removable to allow for future upgrades.

Network Audio Amplifier


Available in Early Spring 2016

Accurate Digital Technology
JENO Engine (Jitter Elimination and Noise-Shaping Optimization)
GaN-FET Driver
High-Speed Silent Hybrid Power Supply
LAPC (Load-Adaptive Phase Calibration)
Battery-Driven Clock Generator
High-Rigidity Metal Double Chassis
Noiseless Signal Technology
Digital Noise Isolation Architecture
Ultra-Low Distortion Oversampling Digital Filter
High-Res Remaster – enhanced for compressed audio
Optimally-Activated Circuit System
Technics Definitive Design
High-Rigidity Aluminum Cabinet
Symmetric Structure
Output Power
100 W + 100 W 4 Ω
50 W + 50 W 8 Ω
Dimensions and Weight
W: 430 mm H: 98.5 mm D: 424.5 mm / Approx. 11.0 kg (Tentative)
Digital Coaxial Input x 2 / Digital Optical Input x 1 / Analog Line input x 1 / USB-A Input / USB-B Input / Phono (MM) input x 1 / Ethernet Terminal / Headphone Output / WiFi a,b,g,n/Bluetooth® (aptX, AAC, SBC) / AirPlay
Digital Input Format
Digital Coaxial: 
PCM up to 192 kHz 24 bit
Digital Optical: 
PCM up to 96 kHz 24 bit
FLAC, WAV, AIFF, ALAC up to 192 kHz 24 bit, AAC up to 96 kHz 320 kbps, MP3, WMA up to 48 kHz 320 kbps, DSD 2.8 MHz, 5.6 MHz
PCM up to 384 kHz, 32 bit / DSD 2.8 MHz, 5.6 MHz, 11.2 MHz with Asynchronous Transfer Mode

Music Server


Available in Spring 2016

Noiseless Signal Technology
Low-Noise USB Transfer
Digital Noise Isolation Architecture
Optimally-Activated Circuit System
Bit-Perfect Ripping
Rigidly-Mounted Sheltered Drive
High-Rigidity Metal Double Chassis
Technics Definitive Design
High-Rigidity Aluminum Cabinet
Symmetric Structure
Dimensions and Weight
W: 430 mm H: 98.5 mm D: 388.5 mm / Approx. 10.5 kg (Tentative)
USB 3.0 x 1 / USB 2.0 x 1 / Ether terminal x 1
USB Audio Output: 
PCM up to 384 kHz 32 bit, DSD 2.8 MHz, 5.6 MHz, 11.2 MHz
FLAC, WAV, AIFF, ALAC up to 192 kHz 24 bit, DSD up to 11.2 MHz, AAC up to 96 kHz 320 kbps, MP3, WMA up to 48 kHz 320 kbps
Ripping format: 
FLAC / WAV encode
2.5-inch SATA SSD, replaceable