Since it does not appear that anyone has experienced this upgrade yet, I decided to take the plunge and purchase one for my Bifrost that has the older USB board.
To be honest - I have not experienced anything bad with the existing USB board, but then I use upgraded power cables and Interconnects and the USB cable I'm using has two cables joined at the DAC's USB plug. One cable is for data and the other for power. The power cables goes into a separate USB mains power adapter.
For details on the cable and power supply see this post
http://forum.audiogon.com/cgi-bin/fr.pl?ddgtl&1415757043&openmine&zzWilliewonka&4&5#Williewonka
The new USB board should be here sometime next week, so I'll post some feedback once I've installed it.
Regards...
To be honest - I have not experienced anything bad with the existing USB board, but then I use upgraded power cables and Interconnects and the USB cable I'm using has two cables joined at the DAC's USB plug. One cable is for data and the other for power. The power cables goes into a separate USB mains power adapter.
For details on the cable and power supply see this post
http://forum.audiogon.com/cgi-bin/fr.pl?ddgtl&1415757043&openmine&zzWilliewonka&4&5#Williewonka
The new USB board should be here sometime next week, so I'll post some feedback once I've installed it.
Regards...