Used API 550B Rack Equipment

Used API 550B Rack EQ in excellent condition, offering legendary 3-band equalization with switchable frequencies on each band and 12 dB of boost or cut. Features fully discrete circuitry and true proportional Q. Perfect for professional studios seeking punchy, musical EQ with vintage API character. Designed for 500-series racks, this unit delivers superior tonal shaping with precision and warmth. Ideal for tracking or mixing a wide range of instruments and vocals.