The Denon DN470A 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.

Features:

• 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.
• 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 -8 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

Specs:

• Inputs: 4 x Euroblock (ground, -, +)
• Outputs: 8 x Euroblock (70 V, 100 V)
• Amplifier Output: 120 W per channel, 70 V, 100 V
• Frequency Response: 100 Hz to 15 kHz (0 / ±1 dBV)
• Total Harmonic Distortion (THD): < 0.1%
• Signal-to-Noise Ratio (SNR): > 95 dB
• Channel Separation: > 70 dB
• Input Impedance: 20 kOhms balanced, 10 kOhms unbalanced
• Input Sensitivity: 0.9 to 1.1 V (0 / ±1 dBV)
• Power Requirement: IEC connection, 100 to 240 VAC, 50/60 Hz
• Dimensions (W x D x H): 19.0 x 11.1 x 1.7" / 483 x 281 x 44 mm
• Weight 10.4 lb / 4.7 kg

The DN-470A 4-Channel 70V/100V Amplifier is designed for contractor/install applications, and only for installed speaker systems requiring 70V/100V inputs.