The NuPrime Audio BTR-8 is a Bluetooth receiver/dongle for streaming digital audio content to NuPrime components. It couldn't be simpler to use with your NuPrime IDA-8 and DAC-9. Just plug it in the USB port.
No external power supply or batteries are needed. The USB port on the NuPrime IDA-8 or the DAC-9 powers the BTR-8.