This is price is for one pair Bare PCB. (2 PCBs)
Audio Amplifier Symasym 5-3 on diyaudio forum is a very well-known line, so far the circuit post traffic is still very active, the sound quality very good, the power 100W +100W very suitable for home use, the circuit work in the Class AB , Performance is very stable.
Status: Class AB
Output power: 100W +100W (8Ω) < V = ± 45v>
Operating voltage: DC+ - 20V ----- + - 45V
Distortion: THD is 0.002% into 1 kilohertz and full power
THD is 0.005% into 10 kilohertz and full power
PCB Size: FR4 138X50X1.6MM
Debugging instructions: test any one of the White cement resistance voltage as V1.
( usually the V1 adjust at about 15-22mv will be good)
we can provide the BOM via email.