Marty, When you use the GT-6 live do you (a) run your guitar directly through the effect out to your amp, (b) run the GT-6 through your amp's effects loop, or (c) use the "4 cable method" that mixes the two above approaches as follows: 1. guitar to Gt-6 input 2. GT-6 send to amp input 3. Amp effect loop send to GT-6 return 4. GT-6 output to Amp return (setting OD on Gt6 to External) Or, is there an option (d) I don't know about? Thanks, Greg