Dear @lalitk : Good news from you and for you to know that your Accuphase fulfill better your room/system reproduction targets than the Dartzeel.
Now, I linked those integrated units to compare apples with apples and Accuphase is tour " apple ", good.
Now, when I posted degradation word this means too something we can’t forget and is that added units/items means losting MUSIC information that we can’t recovery and no audio unit can do it. Added tubes in your system chain means ( normally ) higher noise levels vs SS units.
Btw, you and other gentleman posted the word " magic/magical " in reference to quality units performance and those words are audiophile adjectives only. MUSIC is not magic but beauty as sculpture or paints by Rembrandt and the like.
Enjoy your system and good luck.
R.
" so I use the 1931's for that - but otherwise I have a slight preference for direct amplification. "
Coming that statement from @terry9 means a lot for any one.