Hmm, reading about this Music Streamer II.
"The HRT Streamer II is not just another USB DAC. The following two attributes set the HRT Streamer II apart from the rest USB DACs except a few costing many times more.
1. The HRT Streamer II is based on the asynchronous USB mode.
2. The HRT Streamer II supports the 24-bit/96 KHz high resolution input natively using the OS USB driver.
The asynchronous USB mode frees the USB DAC from being the slave of the USB bus which helps to reduce the jitter. Most USB DACs are implemented in the adaptive mode which is a pretty hostile arrangement that is prone to jitter. "
Jitter again, this time it is "USB jitter".
Tice clock, anyone?