Shut down any unnecessary programs that are sharing resources. This is especially likely if the computer is multitasking. Older computers, particularly those running old OS may produce glitches or dropouts.Choose USB 2.0 (or above) rated cables that are no longer than 2 meters. Optical connections or long USB cables may cause issues at higher data rates.How to fix glitches, pops, clicks, cracks, drop-outs, noise, or distorted audio from your DACĮverything’s connected up and you’re getting a signal, but you’re hearing some unexpected nasty sounds or odd behavior from your system. For reliable 24-bit/192kHz transfer, short USB 2.0 (or better) or coaxial cable connections are recommended. In general, you should be using short, high-quality (though not necessarily expensive) cables. Long optical cables may cause issues with high data rates.Using a USB connection will circumvent this. This is also the case for many PCs: even if the PC claims to produce higher data rates than 24-bit/96kHz from the optical output, the BIOS or drivers may not enable it.To circumvent this, you can use a USB to connect your DAC. If you’re using a Mac, that may be as high as you can go with the onboard optical output. Historically, Apple computers haven’t allowed data rates above 24-bit/96kHz from the optical digital output.If you want to hear your high-res audio files in all their glory and your DAC isn’t playing along, there are a few caveats to be aware of in this instance specifically. They can employ mechanical switching relays, which click when the digital audio stream is interrupted. Some DACs produce mechanical clicks from inside the case during normal operation. What to do about audible clicks when changing sample rates or pausing playback Avoid front panel USB ports on the case if possible, since these may be of low quality. For desktops, it’s better to connect your DAC to USB ports in the back (directly to the motherboard).Since some PCs only house USB 3.0 ports: always keep USB drivers up to date to ensure they are backwards compatible with USB 2.0. It’s also a good idea to reserve the hub for the DAC alone. This will supply ample power to the DAC that the underpowered USB ports just can’t deliver. Another simple solution is to add an externally powered USB hub between your computer and your DAC. Here are instructions for PC users and Mac users. You may be able to solve this by disabling port power management in system settings. Sometimes, in their infinite wisdom, both Windows and macOS can suspend operation or only allow low power from USB ports.
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