You might be interested that Quad produced a (mono) version of it for the
BBC called a presence unit, where the push buttons selected various mid
range boost, as well as the normal tone controls. With the front panel
suitably engraved which makes me think it was Quad made rather than a BBC
mod.

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*Very funny Scotty, now beam down my clothes.

Dave Plowman London SW
To e-mail, change noise into sound.