DD-2280 Two Channel Digital Power Amplifier
Key Features
Protection functions: Auto-limiting output, short circuit, overload, over-temperature, and power-on delay
Delay start system to prevent speaker damage from power surges
Dual-channel balanced input on the rear panel
SPEAKON output connectors for secure connection
Standard 483mm rack-mount (1U) design, lightweight for easy transport and installation
Independent cooling systems for amplifier and switching power supply
Stepless fan speed control for optimized cooling efficiency
Technical Specifications
Output Power (8Ω, 1kHz): 2×350W
Output Power (4Ω, 1kHz): 2×650W
Frequency Response: 20Hz~20kHz (±3dB)
Total Harmonic Distortion (THD): ≤1% (8Ω, 350W)
Input Sensitivity: +4dB (1.23V)
Input Impedance: 10kΩ (Balanced)
Signal-to-Noise Ratio (S/N): ≥80dB
Connectors & Indicators
Input (CH1-2): XLR balanced input
Output (CH1-2): SPEAKON output
Power Supply: AC power input
Indicator Lights:
Power Indicator ×1 (Green)
Input Signal Indicator ×2 (Yellow)
Peak Indicator ×2 (Red)
Protection Circuit Indicator ×1 (Red)
Power & Environmental Requirements
Power Supply Voltage:
AC 110~120V, 50/60Hz
AC 220~240V, 50/60Hz (switchable via internal jumper)
1/8 Rated Power Consumption: 50W / 80W / 110W
Operating Temperature Range: 0~50℃
Operating Humidity Range: ≤90% RH (Non-condensing)
