what preamp goes best with mccormack dna 500, follow up....

@kennesawjet 

You might like this ...

https://store.acousticsounds.com/d/127018/Herron_Audio-VTSP-360_Vacuum_Tube_Stereo_Preamp_with_Remote_Control-Pre_Amps

kennesawjet

Good to see you posting again. I would consider a Conrad Johnson pre-amp.

Keep me posted.

Happy Listening!

If you are seriously thinking of changing speakers I would do that first, then adjust your components to optimize the sound quality for the speakers. Then do cables and powercords.

I would absolutely look at the Backert Labs Rhumba Extreme preamp as being a great match for that amp.  Contrary to jafant's suggestion,  I would steer clear of c-j preamps - their output impedance curves are all over the place with changes in volume and the big McCormack works best with XLR inputs anyway.

You’ve got a very good amp and preamp.  Maybe try some tube rolling in the Herron to inject more sparkle and life into the sound?  Frankly, if I’m you I’m looking at the speakers.  Many newer speakers have more natural detail and better 3D imaging and a bigger soundstage with better overall transparency than speakers of yore.  As an example I’d mention these Joseph Audio Perspective 2s in their gorgeous Sapele wood finish that’ll likely expand your audio horizons in all directions.  If not, just sell them for little/no loss, but IMHO that’s the prime area for an upgrade given what you’re looking for.  Just my $0.02 FWIW, and best of luck.

https://www.usaudiomart.com/details/650009107-joseph-audio-perspective-2-graphene-original-not-upgraded/