It is Class A power amplifier,
Using IRFP9140N high current field-effect transistor.
PASSLAB commonly uses this pair of tubes, and A50-L15 also uses this pair of tubes. But the effect is better than all PASSLAB pure Class A.
The effect surpasses similar A-class PASS A30, KRELL KSA50, and JLH1969 Golden Voice A-class on the market.
The voltage of the power supply is DC+-35V. It can be obtained by rectifying with AC24-0-24V transformer.
Pure Class A 50W 8-ohm amplifier.
Radiator recommendation: 3KG per channel
15CM long and 7.5CM wide, including angle aluminum, with a height of 3CM
Package:
1 pair A50W amplifier boards