Hi-Fi network amplifier achieves ideal simplicity and performance for the era of high-resolution audio.
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.
LAPC (Load Adaptive Phase Calibration)
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.
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 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.
High Res Re-master – enhanced for compressed audio
Technics has developed signal processing to increase both sampling frequency and bit depth: the High Res Re-master system converts audio signals to high resolution at up to 192 kHz/32 bits, to bring the listener closer to the original music. Sound sources that have been compressed based on the audibility threshold and masking effect of human auditory phenomena. Lack the data necessary to reproduce expansive high-frequency sound, as well as detailed and powerful low frequencies. Because the frequency range is reduced and low level signals are omitted. To solve this problem, Technics has developed High Res Re-master using an original algorithm. As a result, the SU-G30 lets you enjoy natural, expressive and rich sound rivalling that of high-res audio.
TIDAL, Spotify and vTuner Supported
In addition to DLNA and USB playback capability, the SU-G30 supports TIDAL, Spotify Connect and vTuner. For vTuner, use the Technics Music App to select stations and listen to a wide variety of broadcasts.