IR codes for HD-AVP

#define REMCODE_OFF 0x02 #define REMCODE_ON 0x20 #define REMCODE_DIRECT 0x0e #define REMCODE_STEREO 0x13 #define REMCODE_MODEDN 0x11 #define REMCODE_MODEUP 0x19 #define REMCODE_INPUT1 0x1f #define REMCODE_INPUT2 0x03 #define REMCODE_INPUT3 0x04 #define REMCODE_INPUT4 0x05 #define REMCODE_INPUT5 0x1c #define REMCODE_INPUT6 0x06 #define REMCODE_INPUT7 0x07 #define REMCODE_INPUT8 0x08 #define REMCODE_Bluetooth 0x09 #define REMCODE_AMFM 0x0a #define REMCODE_HD5 0xFE #define REMCODE_HD6 0xFD #define […]

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 […]

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 […]

USB Standard and Ports

For a complete history and explanation of USB standard (1.0, 2.0, 3.0, 3.1) and port types (A, B, C, micro, etc), refer to Wikipedia USB article. NuPrime communicates and decode digital music from the computer through USB Audio (this is a software standard, not physical USB standard). USB Audio is a software standard that defines how audio devices can communicate […]

Optical input is not working or has intermittent problem

Some entry level consumer devices have optical outputs with high jitter and that can affect the locking of optical signal with some model of NuPrime DAC. If this is determined to be the problem, you can use an optical to analog converter such as “Musou Digital Optical Coax to Analog RCA Audio Converter Adapter” (available […]