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Denon Pro - DN-474A - 2x2-Channel Dual-Impedance Amplifier 70v/100v is available to buy in increments of 1

Denon Pro - DN-474A - 2x2-Channel Dual-Impedance Amplifier 70v/100v

Denon Pro - DN-474A - 2x2-Channel Dual-Impedance Amplifier 70v/100v

The DN-474A 2x2-Channel Dual-Impedance Amplifier is designed for contractor/install market applications which specify installed speaker systems requiring 70V/100V inputs and has the added flexibility of handling lo-impedance loads (4Ω/8Ω). The amplifier is split so that two channels handle the low-impedance speakers, while two channels take care of the 70V/100V speaker runs. This very versatile, one rack space amplifier has built-in short circuit protection - and LED indicators for signal present, clipping status and thermal interruption on the front panel. Engineered for the distribution of multiple 70V/100V speaker systems over long cable runs - such as in-ceiling speakers, surface-mount speakers, and paging horns, and also for shorter runs to low-impedance speakers.


  • 4-Channel Class-D amplifier
  • 2 X 120 Watts with 70V/100V outputs
  • 2 X 150/90 Watts with 4/8-ohm loads
  • Euroblock inputs and outputs
  • Separate gain controls for each channel
  • Signal, clipping and thermal interruption indicators
  • Short-circuit and open-circuit protection


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, 4Ω, 8Ω)
(4) Euroblock channel inputs (ground, -, +)
(1) IEC AC power inlet


Input Voltage
100 - 240 VAC, 50/60 Hz

19.0"w x 11.1"d x 1.7"h (483 x 281 x 44mm)

10.4 lbs (4.7 kg)

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