I just last week upgraded a Lumin U1 Mini to the Sbooster LPS, so can comment on the process. It's not hard, but requires an hour of your time, and the nerve to snip a wire. The Meanwell switching power supply in the Lumin is good, but I feel the Sbooster does improve the sound, though it's not night and day. I could easily live with the stock power supply.
Upgrading Power Supply for Lumin U2 mini from switching to Linear Power Supply
Recently purchased a Lumin U2 Mini streamer along with a Chord Qutest Dac. Use Qbuz and am very happy with the sound quality. My speakers are Martin Logan 11A Impressions, with a Rogue Audio preamp and a Conrad Johnson Classic 62 tube power amp with 60 watts per channel.
I spoke with my dealer yesterday who mentioned that he upgraded his personal U2 Mini power supply to the one supplied by Vinshine Audio. I watched the owner of Vinshine actually do the modification on U Tube. It involves cutting wires and in short for someone like me, there is no way I would even attempt this. I know that making this change voids the manufacturers warranty. This risk I am willing to take. By the way, the dealer mentioned that the improvement is not "night and day", but substantial. Better bass, blacker backgrounds, to name a few. The mod uses an adapter that goes inside the unit with the LHY Power supply which is made by Jay's Audio who also sells CD Transports.
Part II-I noticed that Upscale Audio also sells a Linear Power supply for the U2 Mini, which is made by S Booster. The reviews claims it is easy to install. I am looking for a plug in and play. Am I asking for too much? Has anybody on this site modified the switching power supply to a linear power supply and how involved is this?
Thank you for your responses.