Used QSC RMX4050HD Power Amp

Estimated Year: 2008–2012

Made in: China

Used QSC RMX4050HD Professional Power Amplifier

The QSC RMX4050HD is a high-output, heavy-duty professional power amplifier built for serious live sound, installed systems, and touring rigs that demand massive headroom and rock-solid reliability. This model is part of QSC’s well-known RMX HD series, designed specifically for driving large PA systems, subwoofers, and high-power speaker arrays.

Delivering up to 1300 watts per channel at 4 ohms and capable of bridged mono operation, the RMX4050HD is a true workhorse amplifier commonly used in venues, churches, rehearsal spaces, and mobile sound systems. It features balanced XLR and 1/4" inputs, Speakon and binding post outputs, clip limiting, selectable filters, and front-panel gain controls for easy system integration.

This amp is built like a tank and is known for clean, punchy output with excellent low-end control—especially popular for subwoofer applications.

Features

- QSC RMX4050HD professional power amplifier

- 2-channel, dual-mono design

- 1300W per channel @ 4 ohms

- 850W per channel @ 8 ohms

- Bridge mono operation supported

- XLR and 1/4" balanced inputs

- Speakon and binding post outputs

- Clip limiting

- Selectable low-cut filters

- Front-panel gain controls

- Heavy-duty steel chassis

- Designed for touring and installed PA systems

Condition 

This amplifier is in Good condition.

- Heavy cosmetic wear on rack ears and edges (scratches, paint chips, rack rash)

- Visible scuffs and wear on the top and sides from rack use

- Rack ears show significant cosmetic damage but are still functional

- All inputs, outputs, and controls tested and working

- Powers on and passes signal properly

- Internally intact with working cooling fan

This is a fully functional, professional-grade amp with cosmetic wear consistent with real-world touring and venue use.

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.