The DN-X120 is a companion mixer for Denon's DN-S1200 Media Player and Controller is a fairly straightforward piece of equipment. As for controls, it has a 3-band EQ with a Full Kill option, VCA, 45mm crossfader & channel faders, Mic Talkover switch, split cue, fader start, a 4 position Input/Transform switch, and a 2-band EQ for the mic input. The I/O includes TRS balanced & RCA unbalanced L/R stereo outputs, line and phono/line (switchable) inputs, and a mic input. It also has it's own external power adaptor.

Phono inputs:
• 2 stereo (unbalanced RCA terminals)
• Input impedance: 50kOhms
• Level: -50 dBV (3mV)
  
  Line inputs:
• 2 stereo (unbalanced RCA terminals)
• Input impedance: 20kOhms
• Level: -14 dBV (200mV)
  
  EQ control (line):
• 3 bands
• Control range:
• Hi: -30dB to +10dB (at 16kHz), -38dB to + 10dB (at 20kHz)
• Mid: -38dB to +10dB (at 1kHz)
• Low: -38dB to +10dB (at 60Hz)
  
  Mic inputs:
• 1 mono (active balanced 1/4" TRS terminal)
• Input impedance: 2kOhms
• Level: -54dBV (2mV)
• Frequency response: 20Hz to 20kHz (±3 dB)
• S/N: 66 dB
  
  EQ control (mic):
• 2 bands
• Hi: -12 to +12dB (at 10kHz)
• Low: -12 to +12dB (at 100Hz)
  
  Master output:
• Balanced: Stereo (active balanced 1/4" TRS terminal)
• Output impedance: 150ohms
• Level: +4 dBm (1.23 Vrms) (600/ohms load)
• Frequency response: 20Hz to 20kHz (±2dB)
• THD+N: Line - below 0.05%, Phono - below 0.07%
• S/N: Line - 85dB, Phono - 76dB
• Cross Talk: Over 75dB
• Unbalanced: Stereo
• Output impedance: 1kOhms
• Level: 0dBV (1 Vrms)V (10kOhms/load)
• Frequency response: 20Hz to 20kHz (±2dB)
• THD+N: Line - below 0.05%, Phono - below 0.07%
• S/N: Line - 85dB, Phono - 76dB
• Cross Talk: Over 75dB
  
  Headphone Output
• Output impedance: 33ohms
• Level: 0dBV (1 Vrms) (32/ohms load)
• Power source: AC 10 V 750 mA x 2
• Dimensions: 8.6"W x 4.1"H x 10.3"D
• Weight: 2.8 kg.
  
• Companion mixer for DN-S1200
• (2) Line, (2) Phono/Line (switchable)
• Mic input w/2-band EQ
• Mic Talkover switch
• 3-band EQ w/Full Kill
• VCA, 45mm crossfader & channel faders
• Crossfader contour
• 4 position Input/Transform switch
• Split cue
• Fader Start On/Off for crossfader & channel faders
• TRS Balanced & RCA Unbalanced outputs
• 10 segments level meter
• Simple & easy operation
• External power adaptor