![](http://synton.nl/wp-content/uploads/2017/04/par-eq-227-1024x389.jpg)
Graphic dual filter 227
A Custom-built filter bank with 2 times 27 steep band filters. These (54dB/oct) BP filters are the same as used in the 221 vocoder.
This 4U rackmount unit features one mono input and two outputs, each output controlled by a bank of 27 faders.