Hello Matt, I'm going to assume the digital was not to warm for you, so the problem is in your phono chain. The first thing I would do is get some way to adjust VTA and see if this solves your problem. The Rega uses shims for adjusting, but an after market product like the Pete Riggles vta adjuster would be better, IMO.
Others can help you more on your Prima Luna phono stage and Nagaoka as I have not heard them, but would get the VTA correct before changing anything.
Also get help if you need it, from a dealer or another audiophile. There is a lot you can get wrong on your own.
Others can help you more on your Prima Luna phono stage and Nagaoka as I have not heard them, but would get the VTA correct before changing anything.
Also get help if you need it, from a dealer or another audiophile. There is a lot you can get wrong on your own.