Studiomaster QX4-6000 4-Channel 1U Digital Power Amplifier (4 x 2550W @ 4 Ohms)
DETAILS
The Studiomaster QX4-6000 is an ultra high-power, four-channel digital power amplifier designed for large-scale professional audio systems, touring rigs, and demanding rental installations.
Extreme Power in a 1U Chassis
The QX4-6000 delivers an impressive 4 x 2550 watts into 4 ohms, all from a compact 1U rackmount enclosure weighing under 12kg. This exceptional power-to-weight ratio makes it ideal for high-output sound systems where space, efficiency, and portability are critical, such as line array systems, clubs, theatres, and large live venues. Advanced amplifier adjustment technology ensures over 95% efficiency, providing stable performance even at high current and low impedance loads.
Engineered for Professional System Design
Part of the flagship QX Series, the QX4-6000 is available alongside both 2-channel and 4-channel models, offering scalable solutions from fixed installations to touring systems. With support for stereo, parallel, and bridged operation, the amplifier provides complete flexibility when configuring multi-speaker systems, allowing installers and engineers to optimise power delivery for a wide range of loudspeaker layouts.
High-Efficiency Power Supply with Global Compatibility
The QX4-6000 features active power factor correction (PFC) and an ultra-reliable soft-switching power supply, capable of operating universally between 90–250VAC. This ensures consistent performance across global power conditions, making it suitable for international touring and rental use. The efficient design reduces heat generation and energy consumption, while maintaining high output levels under continuous operation.
Built for Reliability in Demanding Environments
Designed for professional use, the QX4-6000 incorporates comprehensive protection systems including thermal, overload, DC output, and low-voltage protection. Variable speed fan cooling maintains optimal operating temperatures, while thermal, fault, and limiter indicators provide clear system monitoring in real time. The internally modular design allows for fast servicing and long-term reliability in mission-critical audio applications.
Studiomaster QX4-6000 Key Features:
- Ultra high-power 4-channel digital amplifier: Delivers 4 x 2550W at 4 ohms
- Over 95% efficiency: Advanced digital amplification technology
- Active PFC with soft-switching PSU: Stable worldwide operation (90–250VAC)
- 1U lightweight design: Under 12kg for easy racking and transport
- Stable down to 2 ohms: Suitable for high-current speaker systems
- Stereo / Parallel / Bridged modes: Flexible system configuration
- Multiple gain settings: Selectable input sensitivity
- Output limiter: Protects connected loudspeakers
- Balanced XLR inputs: Professional signal connectivity
- Modular internal layout: Quick maintenance and servicing
- Variable speed fan cooling: Efficient thermal management
- Full protection suite: Thermal, overload, DC, and low voltage protection
- Status indicators: Thermal, fault, and limiter LEDs
SPECS & DOWNLOADS
Studiomaster QX4-6000 Specifications:
Stereo Mode:
- 8Ω: 4 x 1500W
- 4Ω: 4 x 2550W
- 2Ω: 4 x 3570W
Bridged Mode:
- 16Ω: 2 x 3000W
- 8Ω: 2 x 5100W
- 4Ω: 2 x 7140W
Technical Specifications:
- Number of Channels: 4
- Input Impedance: 20kΩ (balanced), 10kΩ (unbalanced)
- Protection: Low voltage, overload, thermal, DC output protection
- Net Weight: 12kg
- Dimensions (W x H x D): 483 x 44 x 462mm
- Operating Voltage: 90–250VAC, 50/60Hz
- AC Mains Connector: 32A
- Distortion (THD+N): 0.01%
- S/N Ratio (20Hz–20kHz @ 8Ω): >105–112dB
- Damping Factor (8Ω, 20Hz–200Hz): 5000
- Input Sensitivity: Selectable 41dB, 38dB, 35dB, 32dB

