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AT8681

UniMix® 2-to-1 Microphone Combiner with Balance Control


U.S. Two-Year Limited End-User Warranty

*Manufacturer's Suggested Retail Price. Actual selling price may vary; please check with an authorized Audio-Technica dealer.



  • Overview
  • Features
  • Specifications
  • Downloads
  • Reviews
  • Q & A

  • Overview

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


    • 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

  • Specifications


    Input/Output Connectors XLRF/XLRM-type
    Phantom Power 24-48V DC, 2-4 mA typical
    Frequency Response 20-20,000 Hz
    Gain Unity (0 dB), +0/-1.5 dB
    Noise (A-Weighted) -115 dBV typical
    Weight 8.8 oz (250 g) typical
    Dimensions 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
    Notes UniMix specifications measured at 48V phantom power, 150 ohms input load and 100,000 ohms output load.



    Conditions
  • Downloads

    AT8681, AT8684 Specification Sheet (pdf 67.22 KB)
    AT8681 Submittal Sheet (pdf 135.53 KB)
  • Reviews

  • Q & A

    Do you have questions about this product?

    Get answers from real customers and in-house experts with AnswerBox.

    16 Questions | 16 Answers
    Displaying questions 1-10Previous | Next »
    • Q:

      Is there a version of this with ground lifts on the inputs? Also, do you make a version with terminal ins and outs?
      Asked on 3/12/2018 by Greg from Jennings, LA

      1 answer

    • Q:

      Can this be used to connect two dynamic microphones to one channel of a mixer/amplifier that has no phantom power?
      Asked on 2/11/2018 by Phantomless from Jamestown, NY

      1 answer

      • Staff Reviewer

        A:

        Thank you for your inquiry. You may connect dynamic microphones to the UniMix, but it is designed to operate using phantom power.

        Answered on 2/22/2018 by AudioSolutionsManager from Audio-Technica U.S., Inc.
    • Q:

      If I am understanding this correctly, if I am using two condenser microphones which need 48 volt phantom power, all I would need would be a single channal phantom power source? So the two condensor microphones would plug into the AT8681 and the 48V Phantom power source would go on the output and then into the mixer? Would this supply enough phantom power to the mixer for each microphone? Or would my life be easier just getting a dual Source phantom power box and running to Tom microphones off the AT8681?
      Asked on 1/11/2018 by JAMES from WI

      1 answer

      • Staff Reviewer

        A:

        Thank you for your inquiry. This will work, although you may need to be concerned about the current draw of both mics. Most of the time this is not a problem.

        Answered on 1/20/2018 by AudioSolutionsManager from Audio-Technica U.S., Inc.
    • Q:

      Is it safe to use on interments?
      Asked on 9/24/2017 by Miller from Racine Wi

      1 answer

      • Staff Reviewer

        A:

        Thank you fro your inquiry. I'm not sure what you are asking. If you mean instruments, it is not designed for that purpose.

        Answered on 9/29/2017 by AudioSolutionsManager from Audio-Technica U.S., Inc.
    • Q:

      Is there any chance the mic pre providing phantom (such as an API 512 in a lunchbox) can be damaged due to the fact it is trying to provide phantom to 2 separate mics?
      Asked on 8/28/2017 by Gerry from Lawrenceville, Ga

      1 answer

      • Staff Reviewer

        A:

        No, the preamp will not be damaged but depending on the specifications of the microphones you are connected, the phantom power from your preamp is split between the two (plus a few volts for the AT8681 electronics.)

        Answered on 8/29/2017 by ATUS_Specialist3
    • Q:

      Is it safe to use dynamic microphones with this device?
      Asked on 7/7/2017 by Chris from undisclosed

      1 answer

    • Q:

      Is it safe to use cardioid microphones with this product (since it uses phantom power)?
      Asked on 5/15/2017 by Chris from North Carolina

      1 answer

      • Staff Reviewer

        A:

        Yes, you may use condenser microphones with the AT8681 as it passes phantom power.

        Answered on 5/16/2017 by ATUS_Specialist3
    • Q:

      We're using two identical condensor mics at our pulpit, requiring two channels/two cables. Will this effectively combine the two signals to one channel, eliminating additional cabling, etc.?
      Asked on 10/5/2016 by Christopher from United States

      1 answer

    • Q:

      If one input is connected to a mic with an on/off switch, and that switch is moved to the 'off' position, will the volume of the second mic jump?
      Asked on 7/12/2016 by Chris from United States

      1 answer

      • Staff Reviewer

        A:

        It will not make the volume jump, the channels are separate.

        Answered on 7/19/2016 by ATUS_Specialist4
    • Q:

      Want to combine line level Stereo outs on a church organ and feed to mixing board. It does not like to have the channels combined and causes distortion. Are the inputs isolated and can the unit accept line level signals?
      Asked on 5/2/2016 by Lonnie from Tennessee

      1 answer

      • Staff Reviewer

        A:

        Please contact our Audio Solutions Department at (330) 686-2600 ext 5000 or at audio-solutions@atus.com for assistance with this.

        Answered on 5/3/2016 by ATUS_Specialist3
    Displaying questions 1-10Previous | Next »

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