ZERO-ZONE PRT-12A preamplifier reference - American Gary CARY-SLP90 circuit, the circuit sound with High details, medium and low frequency very thickness.
 
 
PCB size:  155*177*1.6MM  FR4  

Works voltage:  
0-220V AC  >=30mA  (200-220V are all ok)
0-14V  >=0.8A   (AC12-AC15V are all ok)

This preamp are using 4pcs 12AU7 tubes  (Note: the default price are not include the tubes)


We can provide the pdf schematic via email.
 
 

NOTE : 
◆ PCB ---- Bare board PCB without any parts.