A large number in stock, it can be shipped the same day
The product uses relay type 4-way sound source selection / source switching / input selection board and the sound quality is not wasted.
It has no signal amplification funtion,just switching singnal source
Power requirement: DC 6-15V
DC Port is 5.5/2.1mm (Inside + outside -)
PCB size: 107mm * 56mm
Inputs: 4 pairs RCA input
Output: 1 pairs RCA
Output: 1 pairs RCA
Assembled board:it is soldered well
Quality golden-plated input port, like the picture, not a cheap RCA port
