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IGS Audio RB 500 ME Mastering Edition 500-Series EQ  From IGS

IGS's revered Rubber Bands Pultec EQ now in a 500-Series stereo unit! Warm, rich, and smooth - everything you'd want in a powerful, high-quality Pultec style EQ.

IGS Audio


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What We Think

The IGS RB-500 ME takes the pultec design as its inspiration but adds a few incredibly handy features to the tried and true classic. First, this is a dual-ganged stereo EQ. With one set of knobs controlling left AND right channels you can EQ a stereo bus without the fear of mismatched settings on your left and right channels, You can just as easily pass a single mono source through either side, so you're not missing out on pultecs as a mono EQ. More brilliantly than this, the low-frequency band adds an additional frequency selector to the attenuation circuit. When you want to do the classic boost & cut on the same low-frequency point you can still accomplish this, but if you ever want to boost and cut at different low-frequency points, you can now achieve that with the RB-500 ME!

IGS Audio RB 500 ME Mastering Edition 500-Series EQ Quick n' Dirty

In this video, Sound Pure pro audio specialist Nick Prather describes the many benefits of the IGS Audio RB 500 ME Mastering Edition 500-Series EQ, and plays us a sample of the unit in action on a drum bus.

  • Signal Chain
    • IGS Audio RB 500 ME Mastering Edition 500-Series EQ

Manufacturer's Description from IGS

RB500ME is a stereo passive equalizer packed into a double 500-series module. This beast is equipped with transformer balanced inputs (Carnhill) and outputs (Edcor) as well as a class-A driver circuit. Of course the entire filtering section is passive and it mirrors analogue equalizers from the 60s. There is separate frequency selector for low cut and boost sections. Top quality potentiometers and ELMA switches were used to achieve outstanding performance.

The first ever Stereo Pulteq-style EQ in 500 format.

The Rubber Bands is a wonderful tool that can add multiple levels of color to any track or mix. The best thing about, it is that you can set it up in various ways, all sounding clearly distinctive and great at the same. This is the device that gives the studio engineer an opportunity to add their own personality to the music.


IGS Audio

About Manufacturer

IGS Audio is now one the most desired studio equipment brands in Poland and it is continuously expanding internationally. The original IGS Audio products qualify as pretendants to no.1. Clones of other brands produced by Igs Audio are accurate and excellent. 

IGS Audio is all about happiness in success. IGS Audio offers 3 years warranty for all products.

IGS Studio has been operational since 1997. The IGS Audio brand was created in 2003.



Q factor: 0.5 - 4

Boost/Cut Range +/- 20 dB

Hard wire bypass: Yes

All stepped manipulators: Yes, Frequency selectors


Input Impedance (balanced): 1k ohm

Output Impedance (balanced): 600 ohm

Audio transformers: Carnhill on input, Edcor on output


Operating Level: +4 dBu

Max input level: +20 dBu

Max output level: +22 dBu

Headroom (@ +4dBu): 18 dB

Noise Level: -99 dBA


Fequency response: 20 Hz to 20k Hz, +/- 0.1 dB


THD+N: 0.012%

Crosstalk: 75 dB


Power consumption: 7W


Shipping weight: 1.5 kg





RB 500 ME Recall Sheet

Manufacturer's Recall Sheet