Tube Works Real Tube Overdrive - A tube inside a pedal?? | Here's a classic overdrive pedal of the 1980s and early 1990s, with a REAL TUBE inside this well built chassis!
Tube Works Real Tube Overdrive | Reverb Demo Video - YouTube
Real Tube Overdrive Pedal (PH Jan 89)
Maxon RTD800 Real Tube Overdrive/Distortion Pedal Review - Premier Guitar
Tube Works B.K. Butler Real Tube 12AX7 (Vintage) Overdrive Guitar Effects Pedal | Reverb