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  • Digital stereo line input to the mixer via USB.
  • Digital program output via USB to the PC for streaming.
  • Analog microphone inputs with high-performance operational amplifiers, protected against EMI, and analog stereo PGM output.
  • Preamplifiers with feedback control: prevent signal saturation at any fader position.
  • Microphones: 4 × dynamic mic inputs.
    • Fader #3 includes a dual preamplifier for MIC 3 + MIC 4.
    • Level: –75 to –25 dBu.
  • USB: digital input from the PC (fader #4).
    • If USB is not in use, it automatically switches to the stereo line input.
  • Telephone: land line (POTS) to the telephone hybrid.
    • Compatible with SIP lines via an external FXS adapter (not included).
  • Mobile phone: input via Bluetooth 4.0 (30 Hz – 8 kHz, full-range voice quality).
  • Stereo line: switched between telephone/line or fader #4.
    • Level: –10 to +20 dBu.
  • Insert: input/output for an audio processor or external devices.
    • Level: +4 dBu.
  • Stereo Program (PGM): analog, unbalanced.
    • Nominal level: +4 dBu.
    • Maximum level: +14 dBu.
    • Impedance: > 5 kΩ.
    • USB: digital stereo program output to the PC.
    • Mic REC: microphone mix output for PC recording.
      • Level: –10 dBu / 10 kΩ.
    • Headphones: 4 × outputs (16–32–600 Ω).
      • Level: +5 dBu / 50 Ω.
    • Muted speakers: replaces the Headphone #1 output (auto-mute with on-air light).
    • Tally Light: 12 V / 120 mA (LED).
    • SmartCam (optional): USB output for camera control in Audicom & Close RadioTV.
  • Internal microphone in MiniMixer.
  • Private communication with studio, headphones, phone line or mobile phone.
  • Telephone keypad to make calls without the need for an external phone.
  • Frequency response (MIC → PGM OUT): 20 Hz – 20 kHz ±1 dB.
    • Includes pop filter: –3 dB @ 30 Hz.
  • Frequency response (USB → PGM OUT): 20 Hz – 20 kHz ±1 dB.
  • Noise:
    • MIC EIN = –120 dBA.
    • Line input signal-to-noise ratio: 90 dBA.
  • Microphone compressor:
    • Range: 0 – 20 dB.
    • Attack = 5 ms.
    • Release = 200 ms.
  • Distortion:
    • USB Line IN → USB PGM OUT: < 0.02 % THD at 1 kHz.
    • Microphone (–50 dBu) → Analog PGM OUT: < 0.1 % THD.
  • Frequency response: 300 – 3,400 Hz ±1 dB.
  • Rejection: > 40 dB at 1 kHz (adjusting NULL on rear panel).
  • Signal-to-noise ratio: > 60 dBA.
  • External switched-mode power supply: 90–240 V / 50–60 Hz.
  • Output: 12 V / -1 A.
  • Rear connector on PGM output for insertion of external processors or devices (+4 dBu level).
  • Allows connection of a USB audio interface with ASIO support for use with VST plug-ins for effects or multiband processing on a PC.
  • Width: 274 mm
  • Depth: 270 mm
  • Front height: 25 mm
  • Rear height: 71 mm
  • Weight: 1.6 kg