Speck Electronics Model 316 16-Channel 3-Band Parametric EQ

The Speck Project 316 is sixteen high quality equalizers in just 3 rack spaces. Each channel has its own 1/4" input and output jacks.

Each channel has Low, Mid and High Bands and are fully sweepable.
Continuously sweepable from its lowest to its highest frequency: 50Hz to 500Hz for the low band, 500Hz to 5kHz for the mid band, and 5kHz to 15kHz for the high band. Each band may be "boost or cut" 15dB

The Model 316 will accept a wide variety of signal levels. From the wide range of levels from synths or samplers to the highest levels developed by professional recorders. 

Cosmetically it has some heavy rack rash, but all functions are 100%.