User manual

P1 Audio Processor User Manual Page 11
It is also possible to feed this input from an unbalanced source which
may be the case when feeding the P1’s line input from some
keyboard instruments or unbalanced sound card outputs.
If you want to use an ‘off the shelf’ cable then use a standard
unbalanced line level cable (guitar cable) with standard ¼” 2-pole
jacks at either end. If wiring your own unbalanced cable we suggest
the following wiring arrangement which will give better noise and
hum rejection. (Note that the sleeve of the 3-pole jack is intentionally
left unconnected.)
The balanced line input should not be used to directly connect to
electric guitars and basses. Use the INSTRUMENT input instead.