Key Features:

• Class D 100W mono amplifier
• Trim one-half rackspace height - rackmountable or stand-alone
• Removable feet and option to mount two units together in a 1RU space
• Paging microphone input with gain control
• Tone and master volume controls
• RCA inputs (L/R stereo inputs summed to MONO)
• 3.5mm (1/8”) AUX input
• 70V/100V/4Ω Euroblock output

Overview:

If you need a compact, high-powered amplifier that sums stereo signals into a mono output for paging, P.A. announcements and background music applications, the Denon Professional DN-280 is the ideal solution. With a space-saving, one-half rack space profile, the DN-280 features a microphone input for paging, a front panel 3.5mm (1⁄8-inch) AUX input and stereo analog inputs (summed to MONO) for signals from external playback devices such as an iPhone or stereo tuner.

The amplifier handles a 4Ω load or 70V/100V speaker runs, perfect for multiple speaker setups in small retail stores or doctor’s offices. A cool-running, powerful Class D amplifier delivers 100 watts with <0.1% THD and an outstanding Signal-to-Noise Ratio of >95dB, ensuring extremely clean performance under all conditions. The DN-280 has built-in short circuit protection and front-panel LED indicators for signal present, clipping status and thermal interruption.

Specifications:

• Total Harmonic Distortion:

  • <0.1% (A-weighted)
  
  

• Frequency Response:

  • 100Hz – 15kHz (+0/-3dBv)
  
  

• Signal-to-Noise Ratio:

  • >95dB (A-weighted)
  
  

• Damping Factor:

  • >200 (1k 8Ω)
  
  

• Output Power:

  • 60W
  
  

• Connectors

  • (1) Euroblock channel output
  • (1) Dual RCA input
  • (1) XLR / TRS 1/4” (6.35mm) combination input
  • (1) TRS 1⁄8” (3.5mm) auxiliary inpu
  
  

• Input Sensitivity

  • Dual RCA input:

    • 0+/-1dBv
    
    

  • Auxiliary input:

    • -10+/-1dBv
    
    

  • Combination input:

    • -30+/-1dBv
    
    

  • Input Impedance:

    • 20kΩ balanced or 10kΩ unbalance
    
    
  
  

• Power

  • 100V ~, 50/60Hz, 100W
  • 110–120V ~, 50/60Hz, 100W
  • 220–240V ~, 50/60Hz, 100W

  • Voltage Gain:

    • 40+0/-1dB (100V)
    
    
  
  

• Dimensions (width x depth x height):

  • 7.9” x 10.7” x 1.7” (200 x 273 x 43mm)
  
  

• Weight:

  • 5.3 lbs. (2.4kg)