AudioConnect is a 2-in, 2-out audio interface specifically designed for audio test and measurement. It offers analogue audio in and out with a 44.1kHz sampling rate, USB control, and a power indicator; all other typical audio interface controls that are not used for audio test applications have been eliminated. This makes operation and calibration simple with no room for error.


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AudioConnect is packed with additional features to simplify your audio test set up, including power for Listen’s SCM microphones with 0dB/20dB gain, and a headphone amplifier. An integral USB hub offers a logical place to keep the SoundCheck hardware key. AudioConnect is supplied fully calibrated.


  • High quality professional audio interface
  • Analog audio in and out
  • USB Control (SoundCheck® 14 and later)
  • All other settings (e.g. mixer) eliminated for ease of use
  • Compact, rugged and rack-mountable
  • Excellent value

Analog I/O

Number: 2 inputs, 2 outputs
Type: Balanced or unbalanced
Level: 11.4Vp In / 4.4Vp Out
Input Impedance: Balanced: 88kΩ; Unbalanced: 44kΩ
Output Impedance: Balanced: 200kΩ; Unbalanced: 100kΩ A/D and D/A Type: 16 and 24 bit
Analog I/O port connections: ¼” TRS

Analog In Performance

Frequency Response: 20 – 20 kHz ± 0.25 dB
Dynamic Range: 110 dB
Channel Crosstalk: -110 dB, 1 kHz signal
THD / THD+N @ 1 kHz: 0.005% typical

Analog Out Performance

Frequency Response: 20 – 20 kHz ± 0.25 dB
Dynamic Range: 114 dB
Channel Crosstalk: -110 dB, 1 kHz signal
THD/THD+N @1 kHz: 0.005% typical

Additional Functionality

Microphone inputs: 2, microdot connector, SCM/Electret bias
Microphone input level: 5.2Vp
Microphone in THD+N @1kHz: 0.002% typical
Microphone Gain: Unity / 20dB
Headphone Power: max. 100mW into 20Ω
Headphone Output Impedance: < 1Ω USB Hub: Yes (1 internal and 1 external USB port) Physical
Dimensions 1.65″ H x 4.275″ W x 8.82″ D
Weight: 1.25lbs
Power: 24VDC; supplied with universal 100-240V 50-60Hz power adapter

Optional Accessories

Rackmount shelf with mounting points for ¼ rack width Connect series products. Part # 4901


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