Network Audio Amplifier - SU-G30
Grand Class Network Amplifier - Hi-Fi network amplifier achieves ideal simplicity and performance for the era of high-resolution audio.
- JENO Engine (Jitter Elimination and Noise-shaping Optimization)
- GaN-FET Driver (High Speed and Low Impedance Power devices)
- LAPC (Load Adaptive Phase Calibration)
- High-speed Silent Hybrid Power Supply
- Battery Driven Clock Generator
Thank you!
Jitter is a major cause of distortion in digital systems, and is caused by mis-timing in the master clocks used in digital-to-analogue conversion. To eliminate the degradation of sound caused by jitter, Technics has developed an original jitter reduction circuit, comprising a clock generator in the noise-shaping system to reduce jitter in the low-frequency range and a high-precision sample rate converter for suppressing jitter in the high-frequency range. Thus it reduces jitter in an ideal way over the entire frequency range. This works with a newly-developed and original high-precision PWM (Pulse Width Modulation) conversion circuit, optimising the noise-shaping speed, the degree and requantisation error, and the PWM gradation, in order to convert high-resolution signals to PWM without causing any damage to the dynamic range. These new technologies enable the new generation of Technics digital amplifier designs to reproduce the natural and delicate nuances of music.
In the power output section of the amplifier, Technics has employed a high-speed GaN (gallium nitride) FET driver device with super-low resistance. This enables the construction of a high-power amp using a single push-pull configuration, allowing the length of the large current carrying signal path to be shortened, and resulting in outstanding linearity regardless of the sound level.
The impedance of a speaker is not constant: it varies according to frequency, thus altering the loading on the amplifier and therefore potentially the sound. Technics is able to measure an amplifier's frequency amplitude-phase characteristics with speakers connected, and has developed a speaker impedance adaptive optimisation algorithm. Using digital signal processing to achieve the ideal impulse response. Correction processing based on the new algorithm achieves a flat frequency response for both amplitude and phase, which is not possible with a conventional amplifier. Delivering a sound with a rich spatial expression.
Battery Driven Clock Generator
The best power supply for delicate circuitry such as the clock generator in the new amplifiers is one entirely isolated from any noise or fluctuations in the mains supply. Technics has extensive experience in circuits using battery isolation, having used them to create ultra-low-noise pre-amplifier stages in past analogue amplifiers.
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 stabilising 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 stabilise the output voltage. The linear regulator uses custom, high-definition electrolytic capacitors. What's more, the resonance power supply decreases the level of switching noise, and the PFC (Power Factor Correction) reduces primary current peaks and higher harmonics. 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.
The SU-G30 Network Audio Amplifier receives audio signals from various digital content devices, such as NAS, PCs, USB memory devices, and other digital inputs. Many of these digital content storage systems were originally designed for use with PCs, so low noise – which is required for pure audio reproduction – was never a main design concern. To handle these often noisy sources, the SU-G30 isolates the interfaces for these media to exclude external electrical interference, and also employs a jitter remover, thus offering clear and stable sound, free from noise and distortion.
MQAThis unit includes the MQA (Master Quality Authenticated) technology, which enables playback of MQA audio files and streams, delivering the sound of the original master recording. TIDAL, Spotify and vTuner SupportedIn addition to DLNA and USB playback capability, the SU-G30 supports TIDAL and Spotify Connect.
*Compatible music streaming services will be supported sequentially through firmware updates.*Network content services are operated by their respective service providers, and service may be discontinued either temporarily or permanently without notice. Some content may not be available in the country in which you reside. *Registration/subscription may be required. Fees may apply.
