Used Peavey Q431F Pro Sound Effect

Used Peavey Q431F 31-Band Graphic Equalizer

Estimated Year: Late 1990s–Early 2000s 

Made in: USA

The Peavey Q431F is a serious, pro-level 31-band graphic equalizer built for precise tone shaping and feedback control in live sound and studio environments. Made in the USA, this rackmount EQ features constant-Q filters, allowing you to make accurate frequency adjustments without affecting surrounding bands—perfect for dialing in PA systems or cleaning up problem frequencies.

With 31 bands per channel (20Hz–20kHz), this unit gives you surgical control over your sound. The built-in Feedback Locating System (FLS) makes it easy to quickly identify and eliminate feedback frequencies—an absolute lifesaver for live gigs, rehearsal spaces, or installs.

Additional features include switchable 40Hz low-cut filters to remove unwanted rumble, bypass switches for instant A/B comparison, and LED output metering to monitor signal levels. Whether you're tuning a room, tightening a mix, or shaping tone, this EQ delivers classic Peavey durability and performance.

Condition 

Good condition with noticeable cosmetic wear. 

- Rack rash, scratches, and worn faceplate 

- All sliders intact and functioning 

- Buttons and LEDs working properly 

- Tested and fully operational 

Store Policies 

- All items are tested before listing and again before shipping. 

- Orders typically ship next business day. 

- Shipping is available to the continental U.S. only. 

- We do not accept trades on shipped items. 

- Returns are accepted within 48 hours of delivery. The buyer covers return shipping, and a 20% restocking fee applies. If you have any questions before buying, feel free to message us—we’re happy to help.