The Denon DN-470A is a 4-channel 70V/100V amplifier designed to power 70V/100V speaker systems over long distances for contractors, system integrators, and audio technicians in retail environments, office buildings, and educational institutions. Its four Euroblock inputs feed per-channel gain controls on the front panel. The amplifier is rated at 120W per channel and drives eight Euroblock outputs, which are switchable between 70V and 100V using independent rear-panel dip switches.

The high-current switching power design boasts integrated short-circuit and open-circuit protection. LEDs are present for signal, clip, and thermal indication. The DN-470A is rackmountable and occupies only 1 RU.

Features:
Engineered for the distibution of multiple 70V/100V speaker systems over long cable runs such as in-ceiling speakers, surface-mount speakers, and paging horns
Occupies 1 RU
Amplifier output offers 120W per channel and 70V/100V compatibility
Four Euroblock inputs and eight Euroblock outputs
Per-channel gain controls range from -∞ to +40 dB
Integrated short-circuit and open-circuit protection
LED indicators for signal presence, clipping status, and thermal interruption
High-current switching power design

Specifications:
Number of Channels 4
Power Rating 70 V / 100 V:
120 W per Channel
Performance
Frequency Response 100 Hz to 15 kHz ±1 dB
Input Sensitivity 0.9 to 1.1 V
Input Impedance 20 Kilohms (Balanced)
10 Kilohms (Unbalanced)
SNR > 95 dB
THD < 0.1%
Crosstalk > 70 dB
Connectivity
I/O 4 x Euroblock 3-Pin Input
8 x Euroblock 70/100 V Output
Power
AC Input Power 100 to 240 VAC, 50 / 60 Hz
AC Power Connector IEC
Physical
Dimensions 19.0 x 11.1 x 1.7" / 483.0 x 281.0 x 44.0 mm
Weight 10.4 lb / 4.7 kg