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Audio Technica AT8681 UniMix 2-to-1 Microphone Combiner With Balance Control

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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.


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