Description

Designed by the now-legendary Saul Walker in the late ’60s, the 550A was first used as a modular OEM equaliser. Forty years later, the 550A remains the standard against which other EQ’s are measured, and it has played a major role in the recording industry for decades.

• 3 bands of classic API equalisation
• Each band offers 7 API selected frequency centers
• Reciprocal and repeatable filtering
• Maximum 12 dB of boost/cut per band
• EQ Band 1 and 3 offer shelf/peak switching
• “Proportional Q” narrows filter Q at extremes
• Traditional API fully discrete circuit design
• High headroom +30 dB clip level