A3500

Price reduced on 2/26/27.

This is an amplifier with a reason for being in a good way.
This amplifier was left in a friend's house for many years. It was purchased and partially assembled by the deceased owner before being left unfinished.
I completed the assembly, inspection, and testing.
Due to being left for nearly 50 years, there are minor rust spots and paint peeling in various places. However, the total operating time for adjustment and testing is less than 50 hours, so the components such as vacuum tubes, transformers, and capacitors are all brand new.
Furthermore, there is no heat scorching on the resistors, and no dust accumulation on the wiring due to static electricity. This is a rare condition for an amplifier.

Due to the long period it was left untouched, there are some areas of rust on the chassis. (See photo 4)

The item will be carefully packed with cushioning material.

Tube Power Amplifier Kit, Assembled
Effective Output 6CA7 (5-element, UL): 40W+40W
Total Harmonic Distortion: Less than 0.5% (1kHz)
Frequency Response: Within -1dB from 20Hz to 20kHz
Input Sensitivity: 750mV
Input Impedance: 250kΩ
S/N Ratio: 90dB or higher
Residual Noise: 1mV or less
Vacuum Tubes Used: 6CA7x4, 6AQ8x3
Power Consumption: 250W (both channels operating simultaneously at maximum output)
External Dimensions: Width 465 x Height 168 x Depth 206mm
Weight: 16kg, Bonnet: 1.5kg

Please download the circuit diagram and other documents from the internet.