The Squeal Killer, from Stella Vee Amplification, is a pedal-sized box designed to sit between a harp mic and a tube amp, with the sole aim of reducing feedback.
Tech 21's Hot Rod Plexi claims to replicate the classic tone and feel of a vintage Marshall amp in pedal form. Does it deliver, or is it really just another overdrive pedal?
Not many companies can claim responsibility for creating an entirely new market sector, but that is certainly an accolade that is due to Argosy Consoles.