QSC RMX5050a 2-Channel Power Amplifier – 1100W/ch at 8Ω, 1800W/ch at 4Ω, 2500W/ch at 2Ω, 5000W Bridged at 4Ω (RMX5050a)

QSC RMX5050a 2-Channel Power Amplifier

(Class AB High-Power Professional Amplifier – 1100W/ch @ 8Ω, 1800W/ch @ 4Ω, 2500W/ch @ 2Ω, 5000W Bridged @ 4Ω)

The QSC RMX5050a is a flagship high-power 2-channel rackmount amplifier designed for large-scale live sound reinforcement, touring systems, DJs, and installed PA applications. Built for maximum output and reliability, it delivers extremely high power reserves with strong headroom, making it suitable for driving demanding full-range speaker systems and high-performance subwoofer setups.

Based on a Class AB / Class H high-current design with a robust toroidal transformer power supply, the RMX5050a ensures stable, clean amplification even under heavy loads and low-impedance operation. Its rugged construction and proven RMX architecture make it a trusted choice for professional sound engineers who need consistent performance in critical live environments.

With up to 1100W per channel at 8Ω, 1800W per channel at 4Ω, and 2500W per channel at 2Ω, the RMX5050a provides exceptional output capability, while its bridge-mono mode delivers up to 5000W at 4Ω, making it one of the most powerful amplifiers in the RMX series.

Key Features

• 2-channel high-power professional amplifier (Class AB / Class H design)
• 1100W per channel @ 8Ω / 1800W per channel @ 4Ω / 2500W per channel @ 2Ω
• 5000W bridged mono output @ 4Ω for extreme power applications
• High-current toroidal transformer power supply for stable performance and low noise
• Selectable low-frequency filters (30 Hz / 50 Hz) for speaker protection and headroom optimization
• User-defeatable clip limiters to reduce distortion and protect speakers
• Independent channel gain controls with front-panel access
• Signal and clip LED indicators per channel for real-time monitoring
• Balanced XLR, 1/4” TRS, and barrier strip inputs for flexible connectivity
• Speakon and binding post outputs for professional speaker wiring
• Forced-air front-to-rear cooling system for thermal stability in heavy use
• Heavy-duty 3RU rackmount steel chassis built for touring environments
• Ideal for large venues, concerts, festivals, DJs, and installed PA systems