Laney Prism P20 Operating Instructions Manual page 21

Footswitches:
The rear panel has jack connectors for a footswitch and phones/record out.
To the footswitch jack (Channel Scroll and Select functions) any latching or non latching twin footswitch with
stereo jack may be used. (Laney FS2 recommended)
Use the Scroll switch to step and preselect through the four channels in sequence.
Preselected Channel switch will then flash.
When you are ready to change to the preselected Channel simply press the Select switch.
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Headphone/DI output:
SCROLL
A rear panel 6.25" stereo jack is provided for
headphone use.
(The internal speaker is automatically disconnected
when using phones.)
This output may also be used to connect to a
mixing desk for recording if required.
SELECT
(If your Phones have a 3.5mm jack an adaptor
will be required)
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