API 560 10-Band Graphic Equalizer
The API 560 is a precision-engineered 10-band graphic equalizer originally designed for use in API consoles of the 1960s and 1970s. Known for its unmatched curve-shaping potential and signature analog character, the 560 has become a go-to tool for signal sweetening, room correction, and tonal sculpting — all in a compact, easy-to-set format that retains API’s iconic sound.
The 560 offers ±12 dB of boost and cut per band, with fixed one-octave frequency centers and a center detent for instant zeroing. Thanks to API’s exclusive Proportional Q design, the filter bandwidth naturally adjusts — wider at subtle settings and narrower at more extreme boosts or cuts — providing musical, intuitive control over complex sources. This makes it an excellent companion to parametric EQs or for shaping sounds quickly and effectively.
At the heart of the 560 is the API 2520 discrete op amp, which delivers unmatched headroom, low distortion, and the classic API punch. When paired with API’s custom output transformers, the 2520 ensures powerful low-end response, tight stereo imaging, and that instantly recognizable analog warmth. With improved resolution in the ±4 dB range and a silent bypass switch, the 560 is both powerful and user-friendly.
Key Features:
- 10-band graphic equalizer with API proprietary EQ circuitry
- 12 dB boost/cut per band
- One-octave frequency spacing for fast and intuitive operation
- Proportional Q design — wide bandwidth at subtle boosts, narrow at extremes
- Center detents on all bands for accurate recall
- Improved resolution within the ±4 dB range
- Silent true bypass switch
- Fully discrete design featuring the legendary API 2520 op amp
- Exceptional headroom and low-frequency accuracy
- Based on the original 1969 API 560 console EQ
- Compatible with all standard 500 series racks and modules
The API 560 delivers fast, musical tone-shaping with analog richness and graphic EQ simplicity — a must-have for engineers who demand precision, warmth, and the unmistakable punch of vintage American audio.