QSC GX5 500W Power Amplifier

The QSC GX5 500W power amplifier is a two-channel live sound amplifier built for portable PA systems, installed audio rigs, entertainers, rental companies, and AV professionals. It delivers 500 W per channel into 8 ohms and 700 W into 4 ohms while maintaining practical headroom for demanding real-world use.

Designed for compact racks and road-ready sound systems, the GX5 supports XLR, 1/4-inch TRS, and phono inputs for flexible source connections. Speakon combo outputs and binding posts simplify speaker wiring, while detented gain controls help installers and engineers match system sensitivity with confidence.

GuardRail protection monitors operating conditions to help prevent shutdowns during heavy use. The built-in subwoofer/satellite crossover streamlines full-range and subwoofer integration, making this 2-channel Class H amplifier a dependable choice for live sound reinforcement, mobile DJs, and professional AV playback systems. Product shows signs of wear. Fully operable. All sales final.

Key Features

• High-Output Power: Delivers 500 W continuous per channel into 8 ohms and 700 W into 4 ohms.
• Flexible Input Options: Includes 3-pin XLR, 1/4-inch TRS, and phono connectors for professional and consumer audio sources.
• Versatile Speaker Outputs: Provides Speakon combo outputs with 2-pole and 4-pole support plus binding posts.
• GuardRail Protection: Helps protect against temperature rise and overdrive while maintaining usable performance.
• Detented Gain Controls: Supports repeatable level matching and precise sensitivity adjustment during setup.
• Built-In Crossover: Offers a 100 Hz subwoofer/satellite crossover with 3rd order low-pass and 2nd order high-pass filtering.
• Status LED Monitoring: Front panel LEDs display power, signal, and clipping status for fast visual confirmation.
• Shallow Rack Design: Uses a 10.1-inch chassis depth to fit compact equipment racks and mobile systems.

Technical Specifications

• Amplifier Type: Two-channel power amplifier
• Continuous Output Power: 500 W per channel into 8 ohms; 700 W per channel into 4 ohms
• Input Connectors: 3-pin XLR, 1/4-inch TRS, and phono
• Output Connectors: Speakon combo 2-pole/4-pole and binding posts
• Frequency Response: 20 Hz–20 kHz, ±1 dB
• Signal-to-Noise Ratio: 100 dB, 20 Hz–20 kHz
• Input Sensitivity: 1.2 V rms
• Voltage Gain: 34.4 dB
• Input Impedance: Greater than 20 kΩ balanced
• Maximum Input Level: +24 dBu
• Output Circuitry: 2-tier Class H
• Crossover: 100 Hz, 3rd order low-pass and 2nd order high-pass
• Protection: Short circuit, open circuit, thermal, RF, and DC fault
• Power Requirement: 6 A at 120 VAC, 1/8 power pink noise
• Agency Approvals: UL, CE, RoHS/WEEE compliant
• Chassis Depth: 10.1 inches
• Condition: Used; product shows signs of wear and is fully operable