Furman Sound PQ-3 (PQ3) Parametric Equalizer / Preamp — Made in USA (Rackmount)
 
Classic Furman tone-shaping with a true parametric EQ — perfect for bass, guitar, keys, or studio utility.
The Furman Sound PQ-3 is a vintage rackmount parametric equalizer + preamp built in the USA (San Rafael, CA). It’s the kind of “set it and forget it” tool that can clean up mud, add punch, tame harshness, and carve space in a mix — or act as a dedicated tone shaper in a live rig. With selectable EQ in/out (bypass), level control, and wide-to-narrow bandwidth (Q) control, it’s a seriously useful piece for both stage and studio.
 
Condition: Good pre-owned condition. Cosmetic wear and scratches from normal use/rack mounting (see photos).
Includes: AC power cord only. No box/manual/other accessories.
 
Highlights / What it does well?
Parametric EQ control (frequency + bandwidth/Q + boost/cut) for surgical or broad tone shaping
EQ in/out (bypass) for quick A/B comparison
Level control on the front for gain staging
Instrument + line level I/O (rear panel) for flexible setups
Made in U.S.A. (Serial: A 2844)
 
Inputs / Outputs (Rear Panel):
Low Level Input (from instrument)
High Level Input (line input)
High Level Output (to power amp)
Low Level Output (to instrument amp)
(All 1/4” connections as labeled on the unit.)
 
Why this one?
If you want a real parametric EQ that can do everything from subtle sweetening to aggressive carving — without menu diving — the PQ-3 is a solid vintage rack piece with a reputation for being extremely usable across instruments and mixes.
 
FAQs:
1) Does it work properly?
Yes — it’s been tested for operation and signal passing.
2) What’s included?
Only the AC power cord. No other accessories are included.
3) Is this the PQ-3 or PQ3?
It’s the Furman Sound PQ-3 (front panel shows PQ3), same model.
4) Can I use it with a guitar/bass amp?
Yes. It has low-level (instrument) and high-level (line) connections, so you can place it appropriately in your signal chain depending on your setup.
5) Is it rackmount? What size?
Yes — standard 19” rackmount format.
6) Any cosmetic issues?
Normal rack/use wear and scratches. Nothing that affects function.