Rogue DragoN or Bel Canto Ref600 M

but am intrigued by the hybrid DragoN's.

Hi, look at my 3rd post.
Not really a hybrid, as it still has opamp buffers to drive the Hypex NC500 amp modules with, the tube buffers are added in front of the opamp buffers just to give sound "tube colouration".
Not too keen on this,
A buffer from your source (dac or pre), driving "another tube buffer" and it's driving another "opamp buffer" before the NC500 amp get driven.
Too many buffers 3 x in series all adding distortions and noise. 

Cheers George

Now that I look closely at the Rogue, it too probably has opamp buffers (circled) to drive the Hypex NC500 modules with.
https://ibb.co/S0ZySr7
With just maybe the tube as input for the buffer to give some tube flavour, good thing is that "could" be switchable bypassed by a good tech.
And would result similar to Belcanto then but with linear supply my preference.

Cheers George

Sorry wrong pic above for the Belcanto’s opamp input.
This is it circled
https://ibb.co/1sswLW5

Cheers George

This is not going to help much.

Both use the Hypex NC500 modules but the Rogue has linear power supply and tube input buffer.
Where the BelCanto use switch mode (smp) power supplies and an opamp input buffer.

I like the idea of having a linear power supply, of the Rogue, but not a capacitor coupled tube buffer to drive the NC500 low input impedance of 2kohm. https://hifiheaven.net/shop/image/cache/catalog/Rogue/rogueaudio-dragon-inside-750x750.png

I think the opamp buffer of the Belcanto would be better suited to drive that load https://ibb.co/jy63sq9

Cheers George