Studiomaster QX2-4000 2-Channel 1U Digital Power Amplifier (2 x 3400W @ 4 Ohms)
DETAILS
The Studiomaster QX2-4000 is a high-power, two-channel digital amplifier built for large-format PA systems, touring rigs and professional rental applications.
The QX2-4000 is part of the Studiomaster QX Series of advanced digital power amplifiers, engineered to deliver extremely high output levels while maintaining over 95% operating efficiency. Intelligent amplifier adjustment technology ensures stable performance even under high current, low impedance conditions, making the QX range ideal for demanding professional sound systems.
Despite its exceptional power capability, the QX2-4000 is housed in a compact 1U chassis and weighs under 12kg. Active power factor correction (PFC) and a highly reliable soft-switching power supply allow the amplifier to operate universally from 90–250VAC, making it equally suitable for fixed installations, touring racks and portable PA systems.
With output ratings of 2 x 3400W at 4 ohms, and an enormous 9520W in bridged mode at 4 ohms, the QX2-4000 provides vast system headroom for driving large subwoofer arrays, line array systems, club sound systems and high-power stage monitoring.
Output Power & System Capability
The QX2-4000 supports stereo, parallel and bridged operating modes, allowing flexible system configuration for a wide range of professional audio setups. Multiple selectable gain settings and an integrated output limiter provide accurate control over system gain structure and loudspeaker protection.
Stable 2 ohm operation combined with an extremely high damping factor ensures excellent loudspeaker control, particularly in high-output subwoofer applications where fast transient response and tight low-frequency performance are essential.
Operational Design & Reliability
Built for continuous professional use, the QX2-4000 incorporates comprehensive protection systems including low voltage, overload, thermal and DC output protection. Variable speed fan cooling provides efficient thermal management while keeping noise levels as low as possible in real-world installations.
The internally modular design allows for fast servicing and reduced downtime, making the QX2-4000 particularly attractive for rental companies, touring engineers and venues operating multi-amplifier racks.
Connectivity & Control
Balanced XLR inputs ensure clean, low-noise signal integration with professional mixing consoles, DSP processors and system controllers. Professional speaker outputs and a 32A mains input connector provide the current handling required for high-power touring and installation systems.
Front panel indicators display thermal status, fault conditions and limiter activity, allowing engineers to monitor system performance at a glance during operation.
Studiomaster QX2-4000 Key Features:
- Advanced digital amplifier design with over 95% efficiency
- Active power factor correction (PFC)
- Universal 90–250V switching power supply
- 2-channel 1U rackmount format
- Stable operation down to 2 ohms
- Stereo, parallel and bridged modes
- Multiple selectable gain modes
- Integrated output limiter
- Balanced XLR inputs
- Variable speed fan cooling
- Internally modular design for easy servicing
- Low voltage, overload, thermal and DC output protection
- Thermal, fault and limiter status indicators
SPECS & DOWNLOADS
Studiomaster QX2-4000 Specifications:
Stereo Mode:
- 8Ω: 2 x 2000W
- 4Ω: 2 x 3470W
- 2Ω: 2 x 4760W
Bridged Mode:
- 16Ω: 4000W
- 8Ω: 6800W
- 4Ω: 9250W
Technical Specifications:
- Number of Channels: 2
- Power Supply: 90–250VAC, 50/60Hz
- AC Mains Connector: 32A
- Input Sensitivity: Selectable 41dB / 38dB / 35dB / 32dB
- THD+N: 0.01%
- Signal to Noise Ratio: >105–112dB
- Input Impedance: 20kΩ (balanced), 10kΩ (unbalanced)
- Damping Factor: 5000 (8Ω, 20Hz–200Hz)
- Cooling: Variable speed fan
- Protection: Low voltage, overload, thermal, DC output protection
- Dimensions (W x H x D): 483 x 44 x 462mm
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Net Weight: 12kg
