I've been using the exaU2I board for about a week now. It's connected to a Twisted Pear Opus WM8741 board powered by a diy shunt regulated PSU.
I've tried this dac with both a standard PCM270x receiver and the async TAS1020 receiver. The exaU2I is far superior to both of these. With the Twisted Pear receiver I had a lot of problems with noise. This is not the case with the exaU2I. It's completely noise free at full output with my 105 dB/w/m sensitive speakers. The sound is really detailed, dynamic and natural. It is really the best transport I've heard. The jittery PCM270x made my ears bleed, but the exaU2I have none of the traits I associate with a jittery device. The asynchronous TAS1020 is also pretty good, but the exaU2I reveals more details and comes across a bit more relaxed. I've also experimented with 24/192 upsampled material with great results. This allows the WM8741 to be run in low oversampling mode, which sounds even better.
The plan is to get two more Opus boards and use the Foobar crossover plugin for a three-way active speaker system.
Originally posted by Painkiller