PEQ63BA

The Audio Merge PEQ63BA, also known as “The Stepped EQ”, is a modern take on the classic program equalizers of the golden era, drawing clear inspiration from the Altec 9063B. Rooted in pre-Pultec EQP-1A design philosophy, it embraces a fully passive filtering approach focused on broad, musical tone shaping rather than surgical precision. At its core, The Stepped EQ is about controlled, intentional EQ decisions—bringing vintage behavior into a modern, recallable workflow through stepped gain control.

The unit features two independent bands, LO and HI, each offering up to ±20 dB of boost or attenuation in precise 2 dB steps. Its filtering options include low shelving, high shelving, and a high-frequency peaking bell, giving it a deceptively simple yet versatile tonal palette. While the architecture remains minimal, the carefully chosen frequency points and curves allow for effective shaping across the spectrum, especially in mix bus or mastering contexts.