Lepy LP-2020A Back Sockets
The LEPY LP-2020A amplifier has one set of RCA sockets and one jack input. There are also connections for the speakers, and power input.
Here, you can see a pair of relays behind the speaker sockets.
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Lepy LP-2020APower Supply
Audio Chips
Electronic Engineering
No Sound
Bass and Treble Potentiometers
Volume Control LED Lights
Back Sockets
Modification of Input Circuit
Other Mods