Maxon RTD800 Real Tube Overdrive

Overdrive/Distortion with real Vacuum Tube
Independent switchable Overdrive and Distortion Circuits
Foot switchable Boost with 3-9 dB adjustable level
Three-band tone circuit with Bass, Midrange and Treble
Switchable Noise Suppressor with variable Threshold
Heater In-rush current control warms tube upon power-up
True Bypass Switching