UAD Powered Plug-Ins Manual v7.1 - Universal Audio

CHAPTER 3
API 500 Series EQ Collection
Introduction
The 550A and 560 modular EQs are some of the most popular and enduring
mixing and tracking processors ever made. The 500 series modules from API
are true industry standards, found in professional multi-channel consoles to
Lunchbox racks in the humblest of project studios. Designed by the now legendary
Saul Walker in the late 60s, the combination of Walker's 2520 op
amp and his Proportional Q circuitry gave the 550 and 560 an uncomplicated
way to generate acoustically superior equalization. Universal Audio
now offers the UAD-2 platform true best-in-class emulations of these two audio
production staples. With UA’s industry-leading circuit modeling that captures
the filter shapes, band interactions, and unique filter amplifier clipping behaviors
providing full “suspension of disbelief,” these plugins fulfill sonic requirements
that previously only the API hardware could provide. Based on vintage
units provided by Ross Hogarth and Capitol Studios, both plug-ins provide
era-specific features and behaviors, and a remarkable model of API’s custom
2520 and output transformer — the results are fantastic low-frequency transparency
and tight imaging, which is that legendary API “punch in your gut”
sound. Like with the hardware, the EQs are extremely fast to set, reliable and
uniform, and deliver that one-of-a-kind API high headroom precision. If you
want the sound of classic American music, you need the API EQs.
UAD Powered Plug-Ins Manual - 46 - Chapter 3: API 500 Series EQ Collection