This switch gives the option to switch between two amps or to use them both at the same time. It is a passive circuit which means that there are no electronics in it so the sound doesn’t change. What goes in, comes out. It has LEDs to see which amp has been selected.
Seen from above:
- 1st connection: Output 1
- 2nd connection: Output 2
- 3rd connection: 9V
- 4th connection: Input
- Left switch: Both amplifiers or one amplifier
- Right switch: Amp 1 or amp 2
It can also be used the other way around …… 2 guitars to 1 amp. Keep in mind that volume differences may arise because the two guitars might influence each other.