API 565 Filter Module

The API 565 is a surgically precise 500-series filter module allowing you to clean up your sound.
The API 565 has both Hi-pass and Low-pass filter with selectable slopes and a third mid band notch with Q control giving you a wide range of options to tweak the sound to perfection. The Low Pass filter ranges from 500Hz to 20kHz with selectable -12dB or -18dB slopes, while the High-Pass covers frequencies between 20Hz and 600Hz with a choice of -6dB and -12dB slopes.
API 565 Filter Module Overview:

500-series Filter with surgical precision 
Quality gear from API
 A tool designed for filtration with surgical precision
Classic API analog sound
Highpass and lowpass, with slope controls
Midrange notch with Q control