I have read the op amps on the Onix and the Music Hall are different. That is irrelevant since you seek a laid back "musical sonics" the Music Hall and Onix are both built by Shanling and both exhibit the house sound so I am told. I own the Music Hall and think it is an absolute giant killer, I don't see the bass as relaxed it's just well defined, it has a great deal of midrange presence and detail but it will not appeal to you in any event. For the money its cleaner, not thinner than most players 3Xs as expensive.
You would want the Rega which is not my cup of tea, but as my friend Joe always says that is why they make vanilla and chocolate..... and Marshmellow fudge caramel swirl with bits of raw Linzer tarts in it. Seriously you would probably like the Rega if you loved the Naim. I am not at all sure the Minimax is sweet enough for you either competes on a level with the MH somewhat more balanced but not cleaner. I have a Jolida for a softer sound and once had an Audio Aero Prima which was more laid back. I currently use a Granite CDP which is completely different, more defined than a Jolida or Rega but heavier bodied than a lot of players. Check one out if you can find it used, it sells for a fraction of MSRP not well known I guess.
You would want the Rega which is not my cup of tea, but as my friend Joe always says that is why they make vanilla and chocolate..... and Marshmellow fudge caramel swirl with bits of raw Linzer tarts in it. Seriously you would probably like the Rega if you loved the Naim. I am not at all sure the Minimax is sweet enough for you either competes on a level with the MH somewhat more balanced but not cleaner. I have a Jolida for a softer sound and once had an Audio Aero Prima which was more laid back. I currently use a Granite CDP which is completely different, more defined than a Jolida or Rega but heavier bodied than a lot of players. Check one out if you can find it used, it sells for a fraction of MSRP not well known I guess.