UPGRADE PATH FROM CHORD QUTEST

One more pitch on tubes. Eliminating the J&J’s was the most sonically positive impact I ever made to my system. Much more than electronics, phono cartridge/stage, DAC, steamer, cables, power cords etc. Each of my new tube sets provide an excellent, strong & unique sonic signature. 

As others have said, your planned DAC change may improve your sonics, but with diminishing returns, the improvements will more than likely be subtle & not address your issue.

The J&J’s are like bottom of the line Shiit. They may be the best $12.50 tubes that money can buy, but IMHO do not belong in any quality system.

+1 in trying a better power supply with the qutest.

however, try to do this in terms of priority. My educated guess is that you’ll see much greater improvements by changing your tubes than with the LPS or another new dac.

+1 on the Audio Mirror Tubadour iV ...takes a bad recording to another level...still a level down from good recordings...noticed this last night listening to an old Cream recording...dense texture and a really large sound stage.

First - This is an old, but interesting read/review on DACs. Please read it through to the end.

https://www.stereophile.com/content/borderpatrol-digital-analogue-converter-se

Two considerations for rocking:

Get a second set of speakers that are more suited to rocking (someone mentioned JBLs) to swap with your MLs when you have the itch. (I have Maggies and ProAcs to swap). 

and/or

Get a serious sub or 2 (I have a Rythmic 15 in sealed sub) and high pass the amp to your mains at say 50Hz.

@g2the2nd   Thanks for the link.  I find it interesting comparing the different deliveries of the dacs.