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Plugin

Plugin Effects

Waves

API 550

$34.99

Earn 79

API 550
API 550
API 550
API 550
API 550

Sweeten your mixes and masters with proportional-Q curves.

0

Plugin

Plugin Effects

Waves

API 550

$34.99

Earn 79

Sweeten your mixes and masters with proportional-Q curves.

0

Shape Your Tone with Exceptional EQ Curves. The API 550 introduced visionary EQ curves. Q varies with gain, so boosting adds a more focused musical quality—while reducing gain provides natural, subtle-to-steep tone shaping. Developed in close collaboration with API, the 550A/B are loving re-creations of these late-60s legends. Expertly selected frequencies lift instruments up, or place them further back—just as easily as they can sweetly shape a mix’s contour. For individual tracks, buses, or full masters, the 550 defines musical transparency. 550A: 5 selectable frequencies for 3 bands, and 50 Hz – 15kHz filter 550B: 4 overlapping EQ bands with multi-octave ranges Ideal for general problem-solving or sweetening High/low bands for 550A and B switch between peak and shelving Switchable analog harmonic distortion and hiss Convenience features like phase switch, output trim, and metering EQs That Are Both Transparent and Musical

Product Overview

Shape Your Tone with Exceptional EQ Curves.

The API 550 introduced visionary EQ curves. Q varies with gain, so boosting adds a more focused musical quality—while reducing gain provides natural, subtle-to-steep tone shaping. Developed in close collaboration with API, the 550A/B are loving re-creations of these late-60s legends.

Expertly selected frequencies lift instruments up, or place them further back—just as easily as they can sweetly shape a mix’s contour. For individual tracks, buses, or full masters, the 550 defines musical transparency.

  • 550A: 5 selectable frequencies for 3 bands, and 50 Hz – 15kHz filter
  • 550B: 4 overlapping EQ bands with multi-octave ranges
  • Ideal for general problem-solving or sweetening
  • High/low bands for 550A and B switch between peak and shelving
  • Switchable analog harmonic distortion and hiss
  • Convenience features like phase switch, output trim, and metering

EQs That Are Both Transparent and Musical

Ahead of the Curve

API’s pioneering proportional-Q curve made it a favorite for high-end studios that demanded musicality with transparency, rather than the vintage sound that was the mainstay in the 60s and 70s.

Two EQs, One Coherent Goal

The 550A and 550B are designed to the same exacting standards and sound quality, but offer different EQ philosophies—the 550A’s more general slant, or the 550B’s surgical, problem-solving approach.

All That Changes Is the Tone

API’s EQs bring clarity to the zing of a violin string, the snap of a snare, the intimacy of a vocal, or the contour of a mix. These EQs were engineered to bring out the very best of whatever sound you put through them.

Harness API 500’s Symmetrical Boost and Cut

With Proportional-Q, boost and cut are symmetrical—which works wonders for instruments. You can differentiate two layered guitars solely with EQ: a medium boost on one guitar, a medium cut by the same amount on the other. Now the two "add up" to the same energy in that part of the spectrum. This is easier to do with API than with any other EQ.

Additional Information

API 550 (V15) - System Requirements
  • Mac
  • CPU
    Intel or Silicon Architecture
    See notes regarding Apple Silicon based processors

    Memory
    Minimum: 8 GB RAM (16 GB recommended)
    16 GB free disk space on the system drive

    Operating System
    macOS Monterey 12, Ventura 13, Sonoma 14

    Screen Resolution
    Minimum: 1024x768
    Recommended: 1280x1024 / 1600x1024
    USB displays are not supported as the primary display.

  • Windows
  • CPU
    X64 compatible Intel or AMD CPU

    Memory
    Minimum: 8 GB RAM (16 GB recommended)
    16 GB free disk space on the system drive

    Operating System
    Windows 10 64 bit
    Windows 11

    Screen Resolution
    Minimum: 1024x768
    Recommended: 1280x1024 / 1600x1024

Categories:

EQ

Formats:

Plugin

Tags:

Effects Plugin

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