Tube Amplifier

Purchased about 2 years ago from an online auction. Research indicated it was a custom build from a Chinese kit. The pre-stage uses SRPP drive with the coupling capacitors replaced with Orange Drops. Upon checking the circuit, it was found to be self-biased, allowing for constants that can accommodate multiple output tubes. Therefore, in addition to 6L6 series, I also tried using 6V6GTY, 6GA4, etc. Personally, I prefer the 6GA4, but the 6V6 also has good sound cohesion, and the 6L6 series offers a safe and balanced sound. Hum may be present with high-efficiency speakers (though it wasn't noticeable with my speakers). I believe the source of the hum is the power supply ripple filter (it's subtly noticeable after the tubes warm up).
Since it's endless to start replacing wiring, power capacitors, etc., I am listing it in its current condition. The rest is up to the buyer. I think it can be quite enjoyable even for parts harvesting.
As it is an old item, please no claims, no returns.
Dimensions: 80 x 320 x 220mm
Pre-stage tubes: 6H8C (6SN7) x2
Output tubes: 6L6EH x2
Rectifier tube: 5Z4P