Effect Pedals & Processors

API Audio 550b Discrete 4 Band EQ API Audio 550b Discrete 4 Band EQ, Discrete 4-band equalizer, From the 500 series, 7 centre frequencies selectable per band, 12 dB of boost / cut per band, EQ band 1 and 4 in selectable shelf / peak characteristics, Traditional API circuit design,... API Audio 550b Discrete 4 Band EQ