# Improvement using external clock Mutec Ref10

**URL:** <https://forum.msbtechnology.com/t/improvement-using-external-clock-mutec-ref10/1137>\
**Category:** Other Audio Components\
**Created:** [March 15, 2026, 12:19pm UTC](https://forum.msbtechnology.com/t/improvement-using-external-clock-mutec-ref10/1137 "2026-03-15T12:19:55Z")\
**Posts on this page:** 6\
**Page:** 3

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**Author:** ![Mairet](https://avatars.discourse-cdn.com/v4/letter/m/a9adbd/32.png) [@Mairet](https://forum.msbtechnology.com/u/Mairet)\
**Post date:** [July 2, 2026, 7:12pm UTC](https://forum.msbtechnology.com/t/improvement-using-external-clock-mutec-ref10/1137/41 "2026-07-02T19:12:11Z")

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Ah, this is unique to wireless. My Apple TV is HDMI connected to my TV, which is TOSLink connected to my DAC. Thanks for the info though.

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**Author:** ![Bones13](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.msbtechnology.com/bones13/32/244_2.png) [@Bones13](https://forum.msbtechnology.com/u/Bones13)\
**Post date:** [July 3, 2026, 3:13am UTC](https://forum.msbtechnology.com/t/improvement-using-external-clock-mutec-ref10/1137/42 "2026-07-03T03:13:34Z")

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I have used YouTube via the AppleTV. Music is fine, best to leave “ video” mode off for the music, unless the lip sync issue is too bad for your sensibilities. Music better slaved to the MSC clock.

I would assume similar to a setup using PC to stream YouTube to the TV, and HDMI, or TOSLink, to the DAC in some fashion.

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**Author:** ![Mairet](https://avatars.discourse-cdn.com/v4/letter/m/a9adbd/32.png) [@Mairet](https://forum.msbtechnology.com/u/Mairet)\
**Post date:** [July 4, 2026, 1:39pm UTC](https://forum.msbtechnology.com/t/improvement-using-external-clock-mutec-ref10/1137/43 "2026-07-04T13:39:47Z")

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Again I ask, is the latency with video mode turned off constant or variable? If it varies, I won’t waist my time looking for a lipsync delay solution.

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**Author:** ![Dustin\_Symanski](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.msbtechnology.com/dustin_symanski/32/680_2.png) [@Dustin\_Symanski](https://forum.msbtechnology.com/u/Dustin_Symanski)\
**Post date:** [July 5, 2026, 12:13am UTC](https://forum.msbtechnology.com/t/improvement-using-external-clock-mutec-ref10/1137/44 "2026-07-05T00:13:20Z")

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Constant.

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**Author:** ![Mairet](https://avatars.discourse-cdn.com/v4/letter/m/a9adbd/32.png) [@Mairet](https://forum.msbtechnology.com/u/Mairet)\
**Post date:** [July 5, 2026, 12:24am UTC](https://forum.msbtechnology.com/t/improvement-using-external-clock-mutec-ref10/1137/45 "2026-07-05T00:24:47Z")

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Thank you Dustin. 😃

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**Author:** ![Jonathan\_Gullman](https://yyz1.discourse-cdn.com/flex003/user_avatar/forum.msbtechnology.com/jonathan_gullman/32/682_2.png) [@Jonathan\_Gullman](https://forum.msbtechnology.com/u/Jonathan_Gullman)\
**Post date:** [July 7, 2026, 4:21pm UTC](https://forum.msbtechnology.com/t/improvement-using-external-clock-mutec-ref10/1137/46 "2026-07-07T16:21:17Z")

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Sorry, I think there is some confusion with the question.

When in “video mode” the latency is constant.

When in normal playback mode and using S/PDIF the latency is variable. Its a dynamic buffer and it depends on if the incoming clock is faster/slower than the clock in the DAC.

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