QSC RMX850A 2RU 2-Channel Power Amplifier (280W @ 4 ohms)
The QSC RMX850A is a game-changer! It offers professional-grade performance at an unbeatable price. This 2-rackspace amplifier is a must-have for audiophiles and professionals alike. • True professional-quality sound with proven QSC designs. • High-current toroidal transformers for powerful 2 ohm operation and low noise. • Selectable low-frequency filters (30 Hz or 50 Hz) to protect speakers and enhance headroom. It also features XLR and 1/4' balanced inputs, Speakon and binding post outposts for easy connectivity. User-defeatable clip limiters and selectable low-frequency filters optimize sonic performance.
Features: - Professional quality performance incorporates road-proven QSC designs
- High-current toroidal transformers for greater 2 ohm power and low noise
- Independent user-defeatable clip limiters reduce distortion
- Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
- Balanced 1/4' (6.3 mm) TRS, XLR, and barrier strip inputs
- Touch-proof binding post and Neutrik Speakon outputs
- Front mounted gain controls for easy access
- Signal and Clip LED indicators to monitor performance
- Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
- 3-year warranty plus optional 3-year extended service contract
Power Handeling: - Stereo Mode (both channels driven): 185 W
- 8 ohms/ FTC 20 Hz – 20 kHz / 0.1% THD: 200 W
- 8 ohms/ EIA 1 kHz / 0.1% THD: 280 W
- 4 ohms/ FTC 20 Hz – 20 kHz / 0.1% THD: 300 W
- 4 ohms/ EIA 1 kHz / 0.1% THD: –
- 2 ohms/ FTC 20 Hz – 20 kHz / 1% THD: 430 W
- Bridge-Mono Mode: 530 W
- 8 ohms/ FTC 20 Hz – 20 kHz / 0.1% THD: 600 W
- 8 ohms/ EIA 1 kHz / 0.1% THD: 830 W
Dimensions: - Size : 3.5' (8.9 cm) tall / 2 rack spaces
- Weight: 35 lb (15.9 kg)

The QSC RMX850A is perfect for live sound setups, such as concerts, clubs, and events. It's designed for audio professionals and enthusiasts who demand top-notch sound quality. Measuring 3.5' (8.9 cm) tall and weighing 35 lb (15.9 kg), it's compact and easy to install. With its 2-rackspace design, it fits neatly into your setup. Whether you're a touring band or a local venue, this amplifier will deliver powerful, clear sound.