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DMD250.1D - DMD 1-Channel Digital Amplifier


DMD series amplifiers from Diamond Audio provides best in class performance for the value, period! Providing substantial power in a very small footprint heat sink, DMD series amplifiers is the solution for any budget-friendly mobile audio sound system. DMD series comprises a total of five amplifier models: one 4-channel, three mono-channel and one 6-channel amplifiers to select from.

DMD series power is generated from the latest IR chipset technology and its manufacturing process utilizes innovative SMD technology and circuit design while built on 4-layer FR4 PC boards. It features balanced differential inputs for noise-free operation regardless of the source, subsonic filter, bass boost, and LED lit logo indicating power/ protection status mode. Audio precision quality control verification provides high performance and reliability unmatched by other competitors!



  • 1 Channel Mono Block Digital Amplifier
  • 250W x 1CH @ 2Ω / 160W x 1CH @ 4Ω RMS Power Output
  • Input Sensitivity: 0.2-10 Volt
  • Crossover Filter : 50-250Hz (LPF), 24dB Per Octave Slope
  • Frequency Response: 20-500Hz
  • Signal to Noise Ratio: > 90dB
  • Bass Boost: 0-18dB
  • Overall Operation Efficiency: >88%
  • Selectable REM / VOX / DC Turn On Modes
  • Variable Phase Adjustment
  • Dimensions: 6.42” x 6.85” x 1.9” / 163.1 x 174 x 48.4 mm
  • Remote Bass Knob Included

Diamond Audio - DMD 1-Channel 250 RMS Digital Amplifier

SKU: DMD250.1D
  • Amplifier 1 Channel
    RMS Power(2Ω) 250 W
    RMS Power (4Ω) 160 W
    Topology MonoBlock Class D
    Power Supply Full PWM
    Power Supply (Threshold) 10.0VDC – 17.0VDC
    Idle Current (0.7A)
    Distortion - THD (1KHz@4Ω) 0.07%
    Distortion - S/N Ratio (A weight @ 1W) -77.4dBA
    Distortion - S/N Ratio (A weight @ FP) -97.4dBA
    Input Sensitivity Low 0.2mV – 10.0V
    Input Sensitivity High YES – UP to 25 W RMS
    Input Impedance - Low Input Level 22 KΩ
    Input Impedance - High Input Level 22 KΩ
    Output Impedance 0.047Ω
    Damping Factor (50Hz@4Ω) >250
    Bandwidth (-3dB) 10Hz-350Hz
    Crossover (-12 dB/ Oct) Variable High-Pass N/A
    Crossover (-12 dB/ Oct) Variable Low-Pass 35Hz-350Hz
    Crossover (-12 dB/ Oct) Variable Sub-Sonic N/A
    FUSE Ratings - ATC 3 X 40A
    Dimension - Length x Width x Height - Inches(mm) 6.42" x 6.85" x 1.9" (163.1 x 174 x 48.4mm)
  • Authorized Internet Dealer for all Diamond Audio Products

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