Grampian Type 636 Reverberation Unit original A 1962 UK "piggyback" valve

A 1962 UK "piggyback" valve amp and cab combo - the head packs away into a slot in the cabinet (see photo)

the bubbling acidic filter when we switched it on was an unexpected sonic delight - hear the synth in action in the Instagram demo below

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the dry signal is removed and the Depth controls acts as a volume control

Comes complete with 4 original drum pads in excellent condition

Grampian Type 636 Reverberation Unit original A 1962 UK "piggyback" valveAn excellent example of an original 1960s Grampian. All the germanium distortion and reverb you could ever need.