UniMix® 2-to-1 microphone combiner with balance control

$119 + shipping (includes gst)

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The AT8681 combines the output from two microphones into one channel. The balance control attenuates each microphone by 6 dB (typical) at midpoint.

  • Professional XLR-type input/output connectors
  • Can be installed anywhere in-line, either at the mixer input or near the microphone
  • 24-48V DC phantom power and balanced cables required for operation
  • Permits phantom voltage to pass on to the microphone
  • Rugged steel housing
Input Output Connectors


Phantom Power

24-48V DC, 2-4 mA typical

Frequency Response

20-20,000 Hz


Unity (0 dB), +0/-1.5 dB

Noise A-Weighted

-115 dBV typical


8.8 oz (250 g) typical


5.12″ (130.0 mm) W x 2.36″ (60.0 mm) D x 1.73″ (44.0 mm) H typical

Input Impedance

10,000 ohms

Output Impedance

250 ohms

Maximum Input Level

+15 dBV (1% T.H.D. at 1 kHz)

Maximum Attenuation

33 dB at 1 kHz


UniMix specifications measured at 48V phantom power, 150 ohms input load and 100,000 ohms output load.

AT8681 Submit (PDF) Download
Unitools 03 (PDF) Download

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