Palmer PB 20 S Press Patch Box 10-Channel Stereo / 20-Channel Mono
A stereo version of the PPB20 is available in addition to the standard mono version. Instead of a microphone and line input, the stereo version is fitted with two line inputs.
The first line input is distributed to the upper row of outputs (meaning the uneven channels), while the second line input is distributed to the even channels (meaning the lower row of outputs).