Bi-potential amplifier pre-amp DC amplifier empty board NE5532 OPA2134 OPA2604 AD826

Dual op-amp three times before the DC amplification empty board: compact double-sided FR4 fiberglass 

board, the size of 26 × 26mm, suitable for small volume chassis assembly, to save space. 

High-quality PCB, Japan KOA 1 / 4W colored ring precision metal film resistors (error through far less than 1%), high-quality eight-foot hole seat assembly for voltage feedback op amp, such as the NE5532, 

OPA2134, OPA2604, AD826, OPA2111, etc., then ± 5 ~ ± 18 to work. Board leaving two mounting holes 

for easy installation. 

Classic line, although simple, spends a good op amp, such as the assembly with the gold seal OPA2111 

enable voice but a wide range, High Definition force, rich in detail, tonal balance, the sound quality 

depends on the merits of the op amp's performance, resistance the accuracy, and quality of the content 

element is also power can not be the end. Changing the negative feedback resistor value can change the 

magnification. You can also put the assembly according to preferred different types of transport. 

1 x  Dual OP Amp Preamp DC Amplification Empty Board for NE5532OPA2134OPA2604AD826