Whats the FATTEST sounding Tube amp to warm up Lean speakers?


What would you say is the fattest, warmest fullest sounding Tube amp to fatten up
Merlin VSM's?

They are 8 ohm, and easy to drive. 30wpc would do.

From my understanding, through reading here, the Famous match with AtmaSphere s30 actually doubles up on the natural detailed and spacious yet lean character of the Merlins.

Which Amp would do the opposite - be a little forgiving and sweet in the higher mids and fatter and fuller in the lower mids?

Thanks
128x128dumbeat
Interesting. How do you find the sound difference between the Atma and the Pass?
I agree with much of what has already been posted.  Finding the right mix per budget, I would aim a little higher on the power side to provide the dynamic headroom.  
I heard amazing things about your Amps and i am close to trying your s30.
Usually people use the S-30 with the TSM. The VSM needs a bit more power so the M-60 has been the preferred amp for those.
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What about slightly Under Biasing the output Tubes? Would that take some of the "Bite" off?
Would that damage the Tubes or amp or anything else?