Please note when installing:

● The copper plates of 7812 and 7912 should not be close together to avoid short circuit.

Features:

● The op amp adopts Japanese JRC 4580D audio dedicated op amp, a total of four dual operational amplifiers. ● It is recommended to connect a 275V104 capacitor in parallel to the voltage input or switch. Reduce switching noise interference. ● Compatible with ALPS 27 potentiometer. Recommended potentiometer resistance 10-30K ohm

Parameter data:

● Test equipment: Audio Precision 2 ● Actual measurement: ● Power supply voltage: AC12- 0- AC12. ● Output voltage: + -11V ● Maximum output current: +-150MA ● Minimum load impedance 8 ohm ● Input impedance 3K ● Voltage gain VOLTAGE GAIN = 4.5 times ● Input sensitivity = 2.3V ● Frequency response = 10HZ-21KHZ +-0.01 DB