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IGS Audio BISON 500 M/S + Blend Processor  From IGS

An incredibly powerful 500 series M/S processor PLUS built in wet/dry parallel processing mixer to allow you to compress and EQ your sides and mid, then blend in exactly how much processing with the original mix!

IGS Audio


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How to change any comp into Mid/Side by IGS Bison 500.

Here we show how to change any of your favourite compressors into a Mide/Side mode compression set-up. It can really widen your mix if needed. When in Mid/Side mode, your compressor channels are the common and different ares of the stereo image instead of the classic Left and Right channels.

  • Signal Chain
    • IGS Audio BISON 500 M/S + Blend Processor

Manufacturer's Description from IGS

The IGS Bison 500 is a simple mid/side processor with a dry/wet mixer. It can be plugged into any 500 series rack equipped with a standard power supply. It has two stereo jack connectors (2 sends and 2 returns) on the front panel of the device used for plugging in your favorite dual mono or two mono compressors.


With a flick of the switch your compressor(s) start working in Mid/Side mode, where the left channel controls the common/Mid section of the two channels and the right channel controls the difference between the channels referred to as Side. Adding more sides or compressing them differently can increase your stereo image significantly.


The dry/wet knob can be very useful for parallel mixing. It is great for situations, where you want to pump up the sound without losing the natural dynamics of the dry mix.

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.


Input Impedance (balanced) 10k Ohm
Output Impedance (balanced) 50 Ohm
Operating Level +4 dBu
Max input level +18 dBu
Max output level +22 dBu
Dynamic Range 98 dBA (@ 1 kHz, +18 dBu)
Fequency response 10 Hz to 30 kHz (+0.1 dB / -0.2 dB)
Signal to Noise Ratio 81 dBA (@ 20 Hz - 20 kHz)
THD+N 0.003% @ (@ 20 Hz - 20 kHz)
IMD (SMPTE) 0.005 % (@ 20 Hz - 20 kHz)
Crosstalk 78 dB (@ 20 Hz - 20 kHz)
VU Meters Yes, 5 LED Bar Display
Power consumption 8W
Shipping weight 3 kg