Although my experience is rather old, I always found running my natural guitar sound
through the CD24/GK lead was unacceptably noisy. Tried everything - resistors, lifting
the screening, lifting the earth... in the end I just cable tied the GK lead to a guitar
lead using the guitar lead to offer some strain protection for the much more expensive
I'll be buying an Axon unit in a few weeks myself - hoping this is
one part of guitar synthesis that has changed!