EQ in “Lunchbox” format. 4-band version of 550 A, each band with a choice of 7 fixed frequencies.
- Four bands of our famous sounding equalization
- Each band offers seven API selected frequency centers
- Reciprocal and repeatable filtering
- 12 dB of boost/cut per band
- EQ band 1 and 4 offer shelf/peak switching
- “Proportional Q” narrows filter Q at extremes
- Traditional API fully discrete circuit design
- High headroom +30 dB clip level
- Re-issue of 1967 API 550 EQ with an extra band