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EQ-A (iOS)

Using an iPhone 8/GarageBand. For the most part I’m enjoying this app. The drum presets sound fantastic. Everything sounds great...Napalm is Fiiiyah (USA, App Store)

AQ550b (VST, AUv3) v1.0.3
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Based on Classic American EQ from the late ’60s, the AQ550b is a continuation of the EQ that played a major role in the history of music recording, but with an additional filter band and several new frequencies. With a surprisingly wide range of tonal variations, the AQ550b is an invaluable and professional audio tool with great flexibility and excellent sonic ability. 

Features

  • Modeled vintage EQ;
  • 4 bands of classic American equalization;
  • Each band offers 7 selected frequency centers;
  • 15 dB of boost/cut per band;
  • EQ band 1 and 4 offer shelf/peak switching;
  • Proportional Q narrows filter Q at extremes;
  • Stereo, Mid or Side EQ modes.

Rather than offer a huge assortment of complex features, the AQ550b provides exactly the right number of controls. Its four EQ bands are overlapped significantly to aid in dual roles as problem solver and sweetening device with each band offering seven switchable filter frequencies that span four-to-five octaves. These frequencies, purposely selected to be musical rather than numeric.

Making use of Proportional Q intuitively widens the filter bandwidth at minimal settings and narrows it at higher settings without the need for additional bandwidth controls. This unique feature minimizes the «phase-shift» sound found in many equalizers.

The AQ550b extends the features of the original hardware and joins the flexibility of the digital world to the character of the analog processing. Allows you to choose between equalizer Modes (Stereo, Mid, Side) and remove Analogue Saturation from the processing circuit to deliver pure digital sound.

KEYS

  • Double click — reset to default value;
  • Shift — reduce knob/fader sensitivity.

Videos

Reviews and Ratings

IMO, the best API eqs around. M/S available, light on CPU and stable, that's all what I want for now.kolib (Gearslutz)

I like 550B more and more escpecially for drums and others. 550 mostly for vocals then, but depends on... I compared to volko as well, RRS is winner. Trident doing great on backing vocals for me. All these eqs are unexpected nice suprise.kolib (Gearslutz)

Bought 3 of the RRS EQ's — AQ550, AQ550b and AQ560. I am in love with how easy it is to get a good sound. The 3 band eq is my favourite one.GazFromtheManor (Gearslutz)

Their eqs sound fantastic!flo26 (forum.audiobus.us)

These are really nice EQs, definitely worth a demo because the use case is different for sure. These add warmth and girth, and are pretty cheap.mulletsaison (forum.audiobus.us)