The IGS Zen Compressor is unique. The construction is based on the legendary compressors used in Abbey Road Studios. It’s the musical canon of art used by The Beatles. The IGS Zen Compressor audio circuit is based on 14 bi-polar transistors in each channel. The compression is achieved by 8 hand-matched Zener diodes biased by a perfect feedback circuit.
“There’s no compressor that will do everything but, while a subtler ratio option and wet/dry knob would be nice additions, this one can do most of it. And although professional tools of this quality inevitably cost a good chunk, for two channels of this sort of compressor the Zen is very competitively priced. It also looks great, is well built, has a wonderfully ‘knobby’ feel and can be great fun and inspirational to use. In fact, if I were cursed by the gear‑acquisition genie to choose only one hardware compressor to use for the rest of my life, I could do a lot worse than pick the Zen. “
IGS Zen Review from Sound On Sound