@josephp732 I purchased it from Summit. At first he was working with me to get a replacement, but then his inventory was depleted so he was willing to give me credit towards an A6 Master (A8 was not yet released). Then when Eversolo offered to take the unit back to China he dropped out of the discussion.
I tried three different SSD cards. The 1st one was not Samsung, but a relatively known brand. The SSD card worked with two other computers, just not the A6. Then I tried one, then another Samsung (different models) from Best Buy. Both worked in my two other computers but not the A6. The final SSD I also tried in a friend's Aurender and it worked fine there. Something was wrong with the A6.
At the time I asked to replace the A6 with a refurbished or new unit. Summit initially stated he was willing, but then backed out of that when Eversolo became more involved.
At the end of the day the customer service of both the internet seller (out of Canada) and the manufacturer was poor. There are so many options out there I decided to eliminate them from my choices.
I have worked with Upscale Audio a few times and they have been terrific. Unfortunately, I always ended up going a different direction either depending on options or price. I have found TMR to be helpful and with a a tremendous return program. There are a couple of SoCal dealers I also work with that have been outstanding. There are a lot of wonderful dealer and manufacturing options out there. My favorite manufacturers are currently Pass Labs, LTA and Bricasti. A+ with everything. Innuos is decent, but just a notch below. Currently exploring a move from Innuos to Aurender. Still researching.