MSB vs dCS Bartok

A DAC is not a preamp, regardless of what they say

Sorry but this need correcting and is a furphy ( https://en.wikipedia.org/wiki/Furphy ), the output stage on most dacs today (except tube ones) is every bit as good as a preamps output stage sometimes even better, as in the MSB case.

Cheers George

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

As for output settings. It should be set to “high” when not using a preamp or integrated amp. From the manual:

Output (Output Level)

Low
• -6dB output level with a 150Ω output impedance. This setting is
recommended if you decide to use an external preamp

High (Default)
• Standard output level with a 300Ω output impedance

It may simply be that the OP does not like how MSB sounds. Which is perfectly normal. I am not a fanboy. We all like what we like. Cheers!

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.