The two sides of the Warr Guitar (Bass side and Treble side) each go through Carl Martin compressors. The Treble side then goes into the Motu Ultralite and firewires in the the laptop (this setup used a Macbook Pro 1.8 PPC laptop. Then the treble goes into a standalone version of Guitar Rig 4 and spits back out two channels of the Motu.