I've had the Izmo M1 around for a while and had gotten into several discussions about it across various threads. I promised to update with further impressions when I could, but I've lost track of which people were interested and which threads were involved. So I figure it's worth starting a new thread.
You can read my full review HERE at InnerFidelity. In a nutshell, the M1 is a compact USB DAC and headphone amp than can also convert USB to SPDIF. It does an exceptional job as a DDC, a very good job as a DAC, and a pretty respectable job as a headphone amp. Soon to be on sale at eBay for $499, I think it's a really good deal.
I'm curious if any of our HeadFi members are familiar with some of the other Izo products (Izo is the parent company, Izmo is their mobile division). They have a stand alone DAC and several headphone amps that look very desktop friendly.