Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

I have a 2101.  I'm wondering how you all get a real "tubey" sound; 
that rich, warm, glowing sound... as opposed to a harsher solid state 
sound?  I imagine proper EQ'ing?  A tad of phaser on slow??

I've learned so much so far, and a BIG thanks to ya'll AND Glen.  Mark