Used API 550B Rack Equipment

Used API 550B rackmount equalizer in excellent condition, featuring 4 bands of classic discrete EQ with switchable frequencies and 12 dB of boost/cut per band. Designed for professional audio applications, the 550B delivers the legendary API sound with high headroom, precision control, and musical tone shaping. Fully functional and meticulously maintained, this unit is ideal for mixing or mastering engineers seeking authentic analog quality. Fits standard 500-series racks (not included).