# DAC/AMP - USB TYPE-C PD power supply

**URL:** <https://forum.headphones.com/t/dac-amp-usb-type-c-pd-power-supply/27245>\
**Category:** DACs and Digital\
**Created:** [June 22, 2026, 1:05pm UTC](https://forum.headphones.com/t/dac-amp-usb-type-c-pd-power-supply/27245 "2026-06-22T13:05:00Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![TRDK](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.headphones.com/trdk/32/63663_2.png) [@TRDK](https://forum.headphones.com/u/TRDK)\
**Post date:** [June 22, 2026, 1:05pm UTC](https://forum.headphones.com/t/dac-amp-usb-type-c-pd-power-supply/27245/1 "2026-06-22T13:05:00Z")

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In a couple off weeks I will get the Lotoo Gungnir DAC/AMP for test. It require:

“It is recommended to use a USB TYPE-C PD power supply that supports 20V / 3A with a power output of 60W or higher”

A low ripple and noise USB-C PD power adapter or a powerbank could be a solution.

Any suggestions?

Thanks

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**Author:** ![NickZ](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.headphones.com/nickz/32/16394_2.png) [@NickZ](https://forum.headphones.com/u/NickZ)\
**Post date:** [June 22, 2026, 4:06pm UTC](https://forum.headphones.com/t/dac-amp-usb-type-c-pd-power-supply/27245/2 "2026-06-22T16:06:00Z")

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That is a standard usb-c charger that has PD protocol and supports 60W or higher.

I don’t know of any that specifically list ripple and noise in the specs, or what “low” ripple and noise would be.

I know this doesn’t help much, other than to say a standard PD 60W+ charger would work with the dac/amp.

The company seems to offer their own power supply, the PX-01, for $720.

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**Author:** ![TRDK](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.headphones.com/trdk/32/63663_2.png) [@TRDK](https://forum.headphones.com/u/TRDK)\
**Post date:** [June 22, 2026, 4:28pm UTC](https://forum.headphones.com/t/dac-amp-usb-type-c-pd-power-supply/27245/3 "2026-06-22T16:28:25Z")

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There seems to be some information (test) about usb-c charger that has PD protocol one this page:

> **[PQS: Power Quality Score](https://pqs.app/devices?search=PD&categoryId=1)**
>
> Rating for electronic devices that makes sense. We measure and rate devices on a scale of 0 to 200 based on their efficiency, Power Factor and Total Harmonic Distortion.

But not sure what “Total Harmonic Distortion” covers in the test.

Torben

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**Author:** ![LSROCHA](https://avatars.discourse-cdn.com/v4/letter/l/6bbea6/32.png) [@LSROCHA](https://forum.headphones.com/u/LSROCHA)\
**Post date:** [June 23, 2026, 4:33am UTC](https://forum.headphones.com/t/dac-amp-usb-type-c-pd-power-supply/27245/4 "2026-06-23T04:33:20Z")

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$500 for a PD Power supply? They must be out of their bleeding minds!

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**Author:** ![Bookbear](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.headphones.com/bookbear/32/35615_2.png) [@Bookbear](https://forum.headphones.com/u/Bookbear)\
**Post date:** [June 23, 2026, 4:36am UTC](https://forum.headphones.com/t/dac-amp-usb-type-c-pd-power-supply/27245/5 "2026-06-23T04:36:14Z")

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No… just your bleeding wallet 😆