I recently received my SGD1, which I have connected to a SMSL SP200. This replaced a Massdrop O2 / SDAC, and is a giant step up in quality. The O2 / SDAC by itself was good. The SDAC into the SP200 was better, but this combo is superb.
Seeing the thread where
@Ben1987 worked through solving the ESS IM hump is what made me decide to purchase the SGD1. That was a very impressive display of a product designer listening to community feedback and taking the steps to resolve the issue. A lot of other companies could learn from that example.
Confirmation bias aside, I have never heard music played so cleanly and clearly as with the SGD1. I am thoroughly impressed by the quality of this device every time I use it. USB from my MacBook works flawlessly. Even Bluetooth sounds good, though I haven’t yet been able to connect via LDAC. I am hoping that can be resolved via an update?
Next on my list is to build a rPi player that can live next to the DAC...