Wanted to add that I also had a Node 130 with upgraded power supply, and switched to the full Lumin U1 with the X1 PSU. It was a substantial upgrade across the board in terms of sound quality, and while I initially missed the ease of the BlueOS app, like a lot of things about the Lumin app more now.
Granted the Lumin setup is a lot more expensive, but I found one in mint condition used so deals are out there.