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SV-2A3Japan

Manufacture:SUN AUDIO
Original price: JPY 274,000
Price: JPY 134,545 Sold Out
22-35962-40731-00
Japan
Arrival: 2022-07-08 19:50:59
A non-feedback single-power amplifier using 2A3. A vacuum tube amplifier that expresses the afterglow and delicacy of the sound unique to 2A3. It makes you listen to vocals and strings in a relaxed atmosphere with a sweet and glossy tone. It is a highly reliable one that is reasonably priced and well-built. The appearance may include bruises and threads. Serial 10N0871S (Satoshi Yonejima) Maintenance information: 2021.2.25 Maintained (contact cleaning due to poor contact of the output tube socket. It occurs only when the power is turned on, but since it is a minute noise (noise caused by thermal expansion in the vacuum tube), the vacuum tube is not replaced. Deformation is prevented by preparing a volume bracket to prevent volume deformation. Corrected the vacuum tube socket contact cleaning treatment and the input volume mounting method to the method of fixing it to the chassis panel using a 2mm thick aluminum bracket. The 5 ground wiring places have been changed and the power smoothing circuit electrolytic capacitor is added, and the residual noise of 0.7mV has been greatly improved by these, and the sound quality has been improved. Measured value/residual noise during operation check: 0.7mV (LR), distortion-free maximum output: 4.5W/8Ω (measured at 5% distortion), damping factor DF: 2.3. Input sensitivity: 134mV (actual measurement) Output bandwidth: 15Hz to 54kHz (measured at 1W/8Ω) Aging test OK) Accessories: power cord Main specifications: Rated output 4.5W+4.5W, vacuum tube used 6SN7GT × 2 · 2A3 × 2 · 5U4G × 1 W360 × D210 × H190mm 16kg
　　
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