McCormack dna1 to Sony 1040

Yes, tis49's suggestion will work, connect the Sony receiver front speakers outputs to a Speaker-level to Line-level Adapter then go to the DNA1 inputs.
https://www1.crutchfield.com/p_543ADP12/Russound-ADP-1-2-Speaker-level-to-Line-level-Adapter.html?tp...

The DNA1 can provide much better power to the speakers than the Sony! Same concept of Musical Fidelity 550k/750k supercharger.

https://www.stereophile.com/solidpoweramps/1208mf/index.html

@tls49 - well isn't that a heck of thing!!  Gotta read the fine print!  This is the first time I have seen a Zone 2 that does not control volume.  Huh.  This receiver, if it is a Sony STR-DN1040, is pretty useless for the OP's purposes.

Solution - Used basic tube preamp. Happy hunting!

How bout carver t24 preamp to hook the dna1 to

Not  aa fan of the Carver.  Too busy.  Each needless feature is another potential source of trouble.  

What about this listing on A'Gon?
https://www.audiogon.com/listings/tube-golden-tube-audio-sep-1-stereo-tube-preamplifier-3560-2017-08...