Aengus Equalizer

Aengus Graphic Equalizer (or Aengus Thumbwheel EQ) is an equalizer for the 500 series.

Features and specifications

 * 9 band Graphic EQ
 * -12 dB cut
 * +15 dB boost
 * Unbalanced Input
 * Stepped sliders with numerical readings
 * IC amps for every band and discrete output stage on a separate daughter-board
 * Output transformer

Frequencies: 50, 100, 220, 500, 1k, 2.2k, 5k, 10k

History
The Aengus EQ was built in 1974 at the Indigo Ranch Studios.

Producers Ross Hogarth and Sylvia Massy owns a stack of Aengus EQs. Massy writes that "Ross Robinson used these on the Korn records to get that distinctive sound".