UniMute® mic attenuator with user-definable switch function

$109 + shipping (includes gst)

Notice: Undefined variable: tabindex in /home/audiotec/public_html/wp-content/themes/nlr2014/lib/custom.php on line 775

The AT8684 is a versatile attenuator that permits easy in-line switch installation and flexible application. Type of external single-pole switch the user supplies determines muting function; closed contact causes muting. Use for on/off, push-to-talk, push-to-mute, etc. (Additional, isolated poles on the switch may be used to control logic-level DC circuits.)


  • 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


250 g


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

Input Impedance

5,300 ohms

Output Impedance

500 ohms

Maximum Input Level

+17 dBV (1% T.H.D. at 1 kHz)

Maximum Attenuation

57 dB at 1 kHz


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

AT8684 Submit (PDF) Download
Unitools 03 (PDF) Download

Subscribe to our newsletter

Join our mailing list to receive the latest news and updates from Audio-Technica AU

You have Successfully Subscribed!