Boss LS-2 Line Selector

This is not really an effect, but simply, as the name states, a line selector / switcher. However, it does have a “boost” capability and allows for some neat tricks, so it woudn’t be wise to dismiss it as a simple “switch”.

There are 3 controls: two are volume levels and the third is a “mode” knob, which has six postions. Two different color LEDs are used to indicate which output is active.

1st position “A<>B” alternates between A and B outputs (no bypass)

2nd position “A<>Bypass” selects between line A and bypass

3rd position “B<>Bypass” selects between line B and bypass

4th position “A>B>Bypass>” selects between line A, line B and bypass in sequence

5th position “A+B Mix>Bypass” selects between a mix of A and B outputs and bypass

6th position “Output Select” selects between Send A, Send B and direct output

One last note, this pedal has a DC out too: this means that it can be used with an external AC adapter and a cable to supply power to other pedals.

Since this short description isn’t really clear, you may want to read the original manual at this address:

LS-2 Manual (Pdf format, english language) on Roland Japan Site


- Current draw: 25 mA

- Input impedance: 1 MOhm

- Output impedance: 1 kOhm

- Recommended load impedance: 10 kOhm or greater

- Residual noise: -85 dBu or less (IHF-A)