BARR & STROUD VARIABLE FILTER TYPE EF-3 Effects Pedal There's 27 minutes of bleeptastic

There's 27 minutes of bleeptastic noodling to edit - part two follows when we've had a breather

This is a monster of a pedal - big

Use Loop Mode as as short delay mode to make it a true echo pedal

we advise that it's a wise move to fit a modern driver in these old amps: it depends on what you want to use it for

BARR & STROUD VARIABLE FILTER TYPE EF-3 Effects Pedal There's 27 minutes of bleeptasticOffered 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