The DN-470A 4-Channel 70V/100V Amplifier is designed for contractor/install applications, and only for installed speaker systems requiring 70V/100V inputs.  This very versatile, one rack space, 120W per channel amplifier has built-in short-circuit protection, and LED indicators for signal present, clipping status and thermal interruption on the front panel.  Engineered strictly for the distibution of multiple 70V/100V speaker systems over long cable runs, such as in-ceiling speakers, surface-mount speakers and paging horns.

  • Records to SD/SDHC and USB media in MP3 and WAV (up to 24-bit/96kHz)
  • Dual Record feature (records to both media options simultaneously for primary and backup recording)
  • Relay Record feature (continues recording to backup media when primary media is full)
  • XLR and RCA audio connections (analog and digital)
  • Timer recording/playback (30 schedules available)
  • MP3, WAV, AIFF, AAC playback
  • RS-232c, GPIO, USB keyboard remote control
  • Front panel USB keyboard connection
  • EDL marking & file edit functions (Move, Copy, Combine and Divide)
  • Record Monitor (listen the recorded signal while recording)
  • Large, bright OLED display
  • DMP Mark Editor software included (Windows only)
  • 100-230V switching power supply
  • Removable rack ears
  • Total Harmonic Distortion: < 0.1%
  • Frequency Response: 100 Hz – 15 kHz (0 +/-1 dBv)
  • Signal to Noise Ratio: > 95 dB
  • Channel Separation: > 70 dB
  • Input Sensitivity: 0.9 – 1.1 V (0 +/-1 dBv)
  • Input Impedance: 20 kΩ balanced or 10 kΩ unbalanced


  • (8) Euroblock channel outputs – (2) per channel (70V, 100V)
  • (4) Euroblock channel inputs (ground, -, +)
  • (1) IEC AC power inlet


Connection: IEC

Input Voltage: 100 – 240 VAC, 50/60 Hz


  • Dimensions: 19.0″w x 11.1″d x 1.7″h (483 x 281 x 44mm)
  • Weight: 10.4 lbs (4.7 kg)
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