Audio Note Kit 1 Upgrade Or New Dac


So I have a 2010 audio note kit 1 with upgraded internals(caps, wiring, etc.), but stock output transformers. I also have a chord 2qute dac. The dac is fed by a sonore ultrarendu. I am considering making a upgrade. Updated ccore output transformers for the ANK amp or a new dac( probably the chord qutest) My question is which component would I see the most benefit in upgrading, if either. I am very happy with my sound already, just seeing if I could minorly improve on some things. 
akwilson501
The output transformers are the critical weak link in tube amps. Better OPTs (larger cores, less induction, better coupling between primary and secondary, less hysterisis distortion and wider bandwidth) equate to better sound quality. BUT - cost goes up! So be prepared to spend more for better OPTs!
I am currently listening to an AN Kits Dac1.1 given to me as a loaner while my dealer upgrades the caps in my AN UK Dac. I think it sounds excellent and I can imagine that you are very happy with the sound you're getting. An upgrade to the output transformers should be a huge upgrade that is the route I would likely pursue. You say you also have a Chord 2qute have you compared it to the ANK?