tignisolmailessthan3 t1_ja7d0kn wrote on February 27, 2023 at 11:41 AM

Hi, I finally bought a little Dot MK2 for my HD650 and a Topping D10s as a DAC. My problem now is that when I turn it up to over ~20% I can hear a buzzing that get's louder the higher I go. The buzzing stops when I disconnect the RCA cable from either DAC or Amp even when the little Dot is turned to the max. Does that mean that the signal coming from the DAC is the problem?

I'm guessing I should get a DAC with a power source that is not the USB connection. If you think that is my problem what DAC would you recommend for around 150€ or less (more only if absolutely necessary).

And while I'm at it, would an optical cable be better than USB?

Thanks for your help, I really appreciate it.

ThatGuyFromSweden t1_ja7g09r wrote on February 27, 2023 at 12:16 PM

I'd burn the tubes in first. Plug in the headphones and play a variety of music slightly above your regual listening volume. Do that for a day or so.

tignisolmailessthan3 t1_jadxpk7 wrote on February 28, 2023 at 7:11 PM

Okay, I'm working on that lol

Today I've noticed that I can literally hear the GPU working when I'm training a Reinforcement Learning Agent. Does that indicate a problem with the DAC?

ThatGuyFromSweden t1_jae1k7w wrote on February 28, 2023 at 7:36 PM

Kinda, yes. It's hearsay, but it's probably due to power noise. Sadly, the D10 can't take a dedicated power supply. You could try using one of those USB filter adapter things.

The D10 isn't broken, so you could sell it and get a DAC that comes with a PSU. The JDS Atom DAC would be my choice.