MSB vs dCS Bartok

i’m very sorry for your plight. i’ve definitely been there. suggestions from a long((very) time gear trading audionut.
1. don’t judge for a couple of weeks
2. if you’re still not happy i would suggest NOT pouring more money into it. if you don’t like the basic machine the upgrades won’t fundamentally change the character of the sound.
3. if you bought it new and your dealer is a good person and has other lines, figure out what might be better suited to your tastes. they generally don’t like the situation but your unit is new. be firm that if he/she won’t take it back for something else then you feel duped. now i’m way ahead of myself not knowing the dealer or your system but darn sure let him/her know you’re not happy. the sooner the better and seriously don’t add anything to the machine until you’re happy with the base unit. you didn’t ask for my advice so toss it if it has no merit.

4. do NOT count on it sounding better going direct. i’ve personally never found that i would be happy long term with that. there’s always some intangible element missing that makes music special. imho

Rfc - 

Very little will be as dynamic and punchy as what you had . . . 

rfc OP
Hi George, yes it’s set up with the “high output”

Then try the "low output" also hope it has enough volume level for you.

As if with the "high output" if you have to turn back the volume level too much, then this could be "bit striping" the digital resolution and could be what your hearing, a loss of resolution .
Just as Wadia says with their dacs direct to amp, max output level setting with dac volume controls. https://ibb.co/vqgv7kJ

If then on the low setting you find you don’t have enough level to go loud enough even full up, then you’ll either have to put in your Naim pre, or better still you could leave it on the "high output" setting, volume up and set at just a little below full (100?), so your not "bit striping" and then use a passive volume control between dac and amp to adjust your volume

Going direct is never easy, but if you get it right, you’ll be rewarded with the most transparent, dynamic, uncolored sound .

Cheers George

1) Give it some more time to break in

2) Get a second Discrete power supply. It makes a difference. If you have the money, Powerbase is best

3) Always use a preamp (or an Integrated Amp with a good preamp stage). A DAC is not a preamp, regardless of what they say

4) Everything is user dependable. Not everyone likes the same thing. MSB may or may not be what you like

Good luck, and enjoy the journey