I had the LHY kit for my BlueSound Node2. It included the power supply board and an outboard LPS.
Made a huge difference in performance.
Just received my LHY Linear Power Supply
I just received an LHY Power Supply from Vinshine Audio. As always, Alvin and his team were wonderful to work with. The addition of the LHY to my Innous Pulse Mini does make an audible difference. The attack of bass has increased, as well as enhanced detail. I wouldn't say it's a night and day difference, but one that is incremental. I think anyone with a streamer that uses a switching power supply would experience a nice uptick in performance with the addition of a linear power supply.