Hi, Yates.
As it happens, I was in Echo HiFi in Portland on Wednesday to buy an iFi micro iDSD DAC. Unfortunately, they had already sold out. [It's their best selling DAC!] Unwilling to walk out empty handed, I bought an iFi iPurifier USB audio purifier to try out. I'm pretty sure there is an improvement, but I'm also pretty sure I'll return it, and will wait until they are resupplied with the DACs.
While I was there, I listened to a couple songs on the Ryan R-620 floor standing speakers. They sound pretty good (great sound stage, open feel, nice midrange clarity) although there seemed to be just a hint of brightness. I'd first want to listen to a bunch of my songs before passing final judgement on them, but this was my initial impression.
Michael