The 4075 filter is a discrete, voltage controlled, 24/db/oct cascaded transconductance low-pass filter, employing six pairs of hand-matched transistors. In its lowest FREQUENCY setting it shaves off higher frequency harmonics; its RESONANCE or “Q” circuit pushes those harmonics past the self-oscillation boiling point, projecting a thumpy, thrashing squeal, with explosive low to mid-range power and depth. The design is actually pulled from the four-pole ARP 4072 (better: more parts and trims), sans the 12kHz design flaw which hamstrung the original’s high end. The 4075 name has stuck—no sense correcting our little misnomer misstep now.

Features:

• Two Cutoff CV Inputs with Attenuverters
• One V/oct CV Input with switch for tracking or half tracking
• Resonance CV input
• Input and Output Level controls for adding or taming saturation
• Two outputs to save on mults.

Specifications:

Size - 12hp
Depth - 39.7mm with ribbon cable attached
Power Usage - 27mA, 34mA (+12 / -12)

Note: This is a used item, and while it is guaranteed to be fully functional it is almost sure to also contain "rack rash" on the mounting holes and have some minor scratches on the panel from use. It will include a ribbon cable, m3 screws, and a box, but not the original box.