1997 – ORANGE OTR HEAD & COMBO
This amplifier is the Overdrive 120 4 x EL34 enhanced by eighteen modifications. Introduced in 1997, OTR stands for Oscillatory Transition Return. The OTR 80 is the 2 x EL34 version. The very early models featured the letters OTR on the front panel in a much larger font.
“Sound modifications suggested by Noel Gallagher gave the Overdrive more sparkle*, and they formed the basis of the new OTR.”
Adrian Emsley, Orange Amplification Technical Director
* See p. 36-37 of The Book of Orange for more details about Noel Gallagher’s input into the development of the OTR.