Denon DN-474A – 2×2-Channel, Dual-Impedance Amplifier


Denon DN-474A – 2×2-Channel, Dual-Impedance Amplifier


The Denon Pro DN-474A is a 2×2-channel, dual-impedance amplifier designed for contractor and retail installation markets, where the specified speaker system requires 70/100V inputs and has the added flexibility of handling low-impedance loads (4/8 Ohms). The 2×2 amplifier is split; it offers two channels of 70/100V outputs, while the additional two channels provide low-impedance outputs.

The single RU enclosure includes LED indicators for signal present, clipping status, and thermal interruption. Additionally, the amplifier offers protection for short-circuits and open-circuits. Distribute audio to multiple 70/100V speaker systems over long runs, such as in-ceiling speakers, paging horns, and surface-mount speakers, as well as shorter runs to low-impedance speakers.

  • Four-channel, Class-D amplifier
  • Two 120W with 70/100V outputs
  • Two 150/90W 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
UPC: 694318023969
Categories: ,
Power Amplifier
Number of Channels 2
Power Rating 4 Ohms:
150 W per Channel
8 Ohms:
90 W per Channel
70 V / 100 V:
120 W per Channel
Frequency Response 100 Hz to 15 kHz ±1 dB
Input Sensitivity 0.9 to 1.1 V / 0 dBV
Input Impedance 20 Kilohms (Balanced)
10 Kilohms (Unbalanced)
SNR >95 dB
THD <0.1%
I/O 2 x Euroblock 8-Pin Output
1 x Euroblock 12-Pin Input
AC Input Power 110 to 120 VAC, 50 / 60 Hz
AC Power Connector 1 x IEC
Power Consumption 1000 W
Dimensions 19.0 x 11.1 x 1.8″ / 482.6 x 281.9 x 44.5 mm
Weight 10.4 lb / 4.7 kg
Packaging Info
Package Weight 14.1 lb
Box Dimensions (LxWxH) 22 x 15 x 4.5″

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