What's the best way to plug in a USB DAC?

[ThatM1key]

I've got a some what simple question, what would be the best way to plug in a USB DAC? My "new" motherboard comes with only USB3.0 ports on the back and I heard if you plug a USB DAC (which is USB 2.0) into a USB 3.0 port on the back, it increases latency. I also heard if you use the USB internal headers (regardless of USB spec) on the motherboard or use a USB PCIE card (regardless of USB spec also), then they'll increases latency too.

 

[Blumlein 88]

Don't know.

Try one of these softwares and use it in each type of port and see what results you get.

Download DPC Latency Checker

Download DPC Latency Checker 1.4.0 - Small and portable tool that checks system activity for latency issues, to find out if it's capable to handling audio and video real-time streaming without interruptions

www.softpedia.com

Resplendence Software - LatencyMon: suitability checker for real-time audio and other tasks

LatencyMon: suitability checker for real-time audio and other tasks

www.resplendence.com

 

[Dunring]

Ideally, get a Febsmart 2 port pcie card for 15 bucks. Put it in a slot that isn't shared with your SATA controllers (disable any not being used). Your manual will show if any interrupts are shared with slots. Running NVME drives in X4 mode needs certain ones too. Don't plug anything but the DAC into it for smooth sailing.

 

[AnalogSteph]

Internally a USB 3 port is both 3.0 and 2.0 in parallel. Both need to be present for backward compatibility, as 3.0 added a second independent set of data pins. Just plug the thing in and don't worry about it unless you're actually having problems.

 

[Katji]

Where did you hear it and how many times?

 

[Vincent Kars]

it increases latency

Wonder if this is true.
If it does, so what?

 

[tomtoo]

Wonder if this is true.
If it does, so what?

Gamer?

 

[ThatM1key]

Where did you hear it and how many times?

Reddit and YouTube over the years.

 

[ThatM1key]

Wonder if this is true.
If it does, so what?

I'm not talking about small latency, I'm talking about latency that's high enough to be noticeable.

 

[mansr]

I've got a some what simple question, what would be the best way to plug in a USB DAC? My "new" motherboard comes with only USB3.0 ports on the back and I heard if you plug a USB DAC (which is USB 2.0) into a USB 3.0 port on the back, it increases latency. I also heard if you use the USB internal headers (regardless of USB spec) on the motherboard or use a USB PCIE card (regardless of USB spec also), then they'll increases latency too.

You sure have heard a lot of bullshit.

 

[ThatM1key]

You sure have heard a lot of bullshit.

I'm still learning in this "audiophile" world. After all, I used to be a hard believer for tubes until I realized what they did to the sound.

 

[maverickronin]

Do you have an audio interface? If so you can test yourself with this.

Oblique Audio - RTL Utility

oblique-audio.com

 

[_thelaughingman]

First things first, If you are using Windows then you'd have to check the DPC Latency as mentioned by Blumlein88. If you're not on Windows, then I wouldn't really worry about it.

 

[phofman]

Audio latency and DPC latency are two different things. Audio latency is defined by the amount of buffers in the signal chain, deferred procedure call latency is the delay between acknowledging the IRQ reception to the HW with the very fast first part of the IRQ handler and actually processing the data in the deferred second part of the IRQ handler - nicely explained e.g. in https://stackoverflow.com/a/59005311 Large DPC latency can lead to data buffer over/underflows.

Audio latency is configured by the audio client/OS stack, larger means safer. Using low audio latency requires low DPC latencies of the OS to avoid dropouts. Even a super fast OS can run large audio latency if the audio client requests it.

 

[threni]

Reddit and YouTube over the years.

No further questions, your honour.