I'm a big fan of Joe's discrete opamp and have had a few unsuccessful attempts at fitting "daughterboard" type versions of it into commercial pedals. This got me to thinking about whether it would be possible to wire the pedal's opamp pads to a D9 serial cable socket, and then have the discrete opamp housed in it's own enclosure externally.
However, would the length of cable add noise or sully the signal in any way?