How to debug USB audio problem ?

If your Windows USB audio is not working, go through the following diagnostic: Download and run Windows USB Troubleshooter Following these manual troubleshooting steps. To rule out any hardware failure, you should also verify that the NuPrime product is working with another computer.

What are ASIO and WASAPI ?

WASAPI – Applications communicate with the audio driver through Sessions, and these Sessions are programmed through the Windows Audio Session API (WASAPI). In general, WASAPI operates in two modes. In exclusive mode (also called DMA mode), unmixed audio streams are rendered directly to the audio adapter and no other application’s audio will play and signal […]

What kind of volume control and preamp do you use for your DAC?

DAC’s Volume Control Basic A DAC typically has a mix of analog and digital inputs. Some DACs convert the analog input into digital to utilize the DAC’s internal digital volume control and inputs selection, avoiding expensive analog preamp and volume control as described above. The performance degradation of the analog input that has to go […]

Can’t play DSD256 with Audirvana 2.5 on a Mac

Mac OSX does not support native DSD. It only supports DoP (DSD over PCM).  Since encoding DSD into DoP requires twice the bandwidth, when using NuPrime’s DAC with Mac OSX, the support of DSD is limited to half of the maximum decoding capability of the DAC. From Audirvana: “To listen to DSD files from a […]

How can DAC-10/10H line out be turned off ?

DAC-10 / 10H line out can be turned off by holding the Mute button for 3 seconds. The line out will not automatically turn off when the headphone is inserted because there are multiple headphone outputs. To enable the line out again, press and hold the Mute button for 3 seconds.