MY APPLICATIONI wanted to use this with a DRRI, (two channel inputs) and put an overdrive or high gain Distortion pedal on channel 1, leaving the reverb and speed/intensity to the clean channel 2

However, when the overdrive is turned on, but the AB is switched to the clean channel, you get a lot of bleed through of the noise inherent from that high gain

a clean channel and dirty channel.

Boss AB-2)- 9V Power supply jack of the "standard" variety used on a majority of pedalsCONs- Allows bleedthrough of noise from one channel to the other (for instance a high gain pedal on B may bleed noise through to A if the pedal is not turned off)- No ability to change phase - can be a problem if using a Fender 2 channel amp like DRRI with inputs out of phase, or two amps with inputs out of

a clean channel and dirty channel.

Works Perfectly - A or B - or combine them A &

It works as it should, seems like it has solid construction, and keeps signal noise to a minimum.

Overall, I really like the A or B, A and B switching layout and functionality