Details:
Size: 225x197mm
Transformer parameters: dual AC26V to dual 32V (at least 1A) + single 12V (0.5A), power 50-80W
Input 4 groups of RCA, 1 group of RCA output
The output has delay turn-on and output midpoint protection
Package included:
JC2 preamplifier board pcb x 1
Not included any parts
Assembled board ,just for reference: