BARR & STROUD VARIABLE FILTER TYPE EF-3 Effects Pedal This is a monster of

This is a monster of a pedal - big

It has a few very minor scuffs and scratches but is in good order for a unit that's around 30 years old - there's some tape residue to the sides and underside of the case which aren't visible when racked (see detailed photos below)

Feeding the Drummer One’s beat into the Korg X-911 Guitar Synthesizer for random MS Series Synth effects

This is a great creative machine - but not for you if you want perfect clean echoes

BARR & STROUD VARIABLE FILTER TYPE EF-3 Effects Pedal This is a monster ofOffered for sale is this Barr & Stroud Variable Filter EF 3 in excellent cosmetic condition and good working order (see photos for details). This is an extremely high spec dual filter unit as used by the BBC and various labs around the world: it offers very precise filtering. It requires BNC connectors adaptors for audio use. These units are famed for their high build quality and are designed for use in forensic audio they have also gained a following