I have a Holo Audio May KTE. I ordered it in Feb, received it in April. My experience pretty much echos the reviews. It takes several WEEKS of running to stabilize/burn-in, and over that time the sound signature definitely changes. By about 400 hours (2 weeks) there were no more bad trends as there were early in the burn in cycle, instead it continued to get better little by little. By 1000 hours I no longer heard any changes, and the changes were pretty subtle improvements between 400 hrs and 1000 hrs.
It is an outstanding DAC. I can't see replacing it until it dies. I've tried different inputs, but USB through Intona cables and galvanic isolator is how I listen mostly. I bought a D.BOB box that allows me to stream SACD from my Oppo 105 to the DAC via HDMI cable to the D.BOB and then a coax to the DAC and there is a BIG difference in the sound through the DAC than native Oppo analog out (and I always thought the Oppo was pretty decent).
It is an outstanding DAC. I can't see replacing it until it dies. I've tried different inputs, but USB through Intona cables and galvanic isolator is how I listen mostly. I bought a D.BOB box that allows me to stream SACD from my Oppo 105 to the DAC via HDMI cable to the D.BOB and then a coax to the DAC and there is a BIG difference in the sound through the DAC than native Oppo analog out (and I always thought the Oppo was pretty decent).