MSB vs dCS Bartok

Sorry George, my experience has been different. And I actually own MSB

So do I, and get to see inside them and some of the circuits and what they consist of.

  It may simply be that the OP does not like how MSB sounds. Which is perfectly normal

You assume too much, he hasn't explored all the options yet as I've laid out, if you bother to talk to Jonathan Gullman (MSB) he will say the same. 

I am not a fanboy. We all like what we like. .

That's very obvious.

Oh I like MSB. I merely have the Discrete (with dual power supplies and the ProISL USB module), and have zero interest in upgrading, although I wish I had the cash for the Premier. 

And... I know Jonathan, and Vince Galbo, very well. 

And... I know Jonathan, and Vince Galbo, very well.

As do I, so now then can you ask them, (just don’t tell them your not a fanboy.)
To the options I laid out for the OP to try first, then ask the main one.
"is the output stage of the Premier dac as good to drive a poweramps direct as a preamp such as the Naim."
Or maybe I should just get Jonathan to answer here.

Seriously... what do you expect them to say?
I stand by my statement on the preamp. My experience. One man’s experience. Take it for what’s worth. Or don’t. We can agree to disagree. Cheers

We can agree to disagree.

No, because the OP has not yet tried all the options yet I laid out, to get all cons out of the equation.
Then if you saw, I did say to install the preamp back in as a last resort.