Technics SU-G30 Network Audio Amplifier
Technics SU-G30 Network Audio Amplifier
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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.
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 have extensive experience in circuits using battery isolation, having used them to create ultra-low-noise pre-amplifier stages in past analog amplifiers.
With a conventional switch mode power supply, the switching frequency changes in response to the load fluctuation to control the switching ON time for stabilizing the output voltage. This fluctuation component in the switching frequency harms 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, 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.
