T-Rex SpinDoctor 2 Overdrive 4 custom channels of analogue overdrive each with its own settings for gain, bass, mid, treble, presence and output level. A lead button is always available, and you can bypass the SpinDoctor2 from any channel for a clean sound straight from your amp. A programmable tube preampYou can also use SpinDoctor2 as a tube preamp, plugging it directly into a power amp via the output jack. In the studio, use the speaker-simulation output to plug into a studio mixer or AD converter connected to your computer. Special level and frequency knobs let you set the volume and define the character of your virtual cabinet.