CAKEWALK SONAR User Manual page 657

The 1/8" jack should be plugged into the sound card's mic input, although plugging
into the line input may also work.
Electric Guitar Through Effects Rack
You can also plug an electric guitar into an effects rack, then send the output of the
rack to the sound card's input, as shown in the following diagram:
This diagram assumes that the output of the rack is at line level. If it is at pro level
instead (+4 dB), and your card does not accept a +4 db input, you will need to
attenuate (lower) the F/X rack's signal. To do this, use a mixer between the rack's
output and the Y-adapter. If the rack has only a mono output, a 1/4" mono to 1/8"
stereo adapter should be used instead of a Y-adapter.
If you want to connect a guitar amplifier's direct output to the sound card, you
should base your setup on this example.
657