Studiomaster HX2-300 2-Channel 1U Digital Power Amplifier (2 x 255W @ 4 Ohms)
DETAILS
The Studiomaster HX2-300 is a compact, high-efficiency two-channel digital power amplifier designed for professional installation and live sound applications.
The Studiomaster HX2-300 is a lightweight yet powerful two-channel digital power amplifier, offering reliable performance in a compact 1U rackmount chassis. As part of the HX Series, it combines high output power with energy-efficient operation, making it well suited to fixed installations, conference venues, entertainment spaces, and smaller touring or rental systems.
Designed for demanding environments, the HX2-300 delivers up to 255W per channel at 4 ohms and remains stable down to 2-ohm loads. Power factor correction (PFC) and a universal 90–250V power supply ensure consistent operation worldwide, while its efficient design helps reduce energy consumption without compromising audio performance.
Efficient Power and Flexible Configuration
The HX2-300 supports stereo, parallel, and bridged operating modes, allowing it to adapt easily to a wide range of loudspeaker configurations. Multiple gain modes and an integrated output limiter provide precise control, making the amplifier suitable for both speech-focused systems and high-impact music playback.
Protection, Cooling, and Professional Connectivity
Comprehensive protection circuitry safeguards the amplifier against overload, thermal issues, and DC faults, ensuring long-term reliability. A variable speed fan provides effective cooling while keeping operational noise to a minimum, and clear front-panel indicators display thermal, fault, and limiter status at a glance.
Balanced XLR inputs and professional speaker connectors allow straightforward integration into professional audio systems, whether for permanent installation or portable use.
Studiomaster HX2-300 Key Features:
- 2-channel digital power amplifier: Compact 1U rackmount design
- High-efficiency operation: Energy-saving design with low power consumption
- Power factor correction (PFC): Ensures stable and efficient performance
- Universal power supply: Operates from 90–250V AC, 50/60Hz
- Power output: 2 x 255W at 4 ohms, stable down to 2-ohm loads
- Bridged operation: Up to 870W at 4 ohms
- Flexible operating modes: Stereo, parallel, and bridge configurations
- Multiple gain modes: Allows precise system matching
- Built-in output limiter: Protects speakers from overload
- Balanced XLR inputs: For low-noise signal transmission
- Professional speaker connectors: Secure and reliable connections
- Comprehensive protection: Thermal, overload, and DC protection
- Variable speed fan cooling: Efficient thermal management
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Status indicators: Thermal, fault, and limiter LEDs for monitoring
SPECS & DOWNLOADS
Download the PDF Data Sheet HERE >
Studiomaster HX2-300 Specifications
- Power Output 8Ω Stereo: 2 x 150W
- Power Output 4Ω Stereo: 2 x 255W
- Power Output 2Ω Stereo: 2 x 435W
- Power Output 16Ω Bridged: 300W
- Power Output 8Ω Bridged: 510W
- Power Output 4Ω Bridged: 870W
- RMS Output Voltage (THD=1%, 1kHz): 34.6V
- Voltage Gain: 30.8dB
- Slew Rate: 50V/µs
- Input Sensitivity (Rated Output, 1kHz): 1Vrms
- THD+N (10% Rated Output Power): 0.02%
- IMD-SMPTE (10% Rated Output Power): 0.05%
- DIM30 (10% Rated Output Power): 0.05%
- Crosstalk Rejection (20Hz–1kHz): ≥80dB
- Frequency Response (20Hz–20kHz, 8Ω): ±0.2dB
- Input Impedance: 20kΩ balanced, 10kΩ unbalanced
- Damping Factor (8Ω, 20Hz–100Hz): ≥300
- Signal-to-Noise Ratio (A-weighted): ≥105dB
- Power Supply: 90–260V AC, 50/60Hz
- Protection: Overload, thermal, and DC output protection
- Dimensions (W x H x D): 483 x 44 x 323mm
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Net Weight: 5.0kg

