Yeah, D is improving and will offer high quality amplification at lower prices eventually. For now, I don't think it can keep up with the best class A amps, tube or SS, but it's close and getting closer everyday.
One thing about D amps is it seems they require more tweaking to get the sound right and they react more strongly to changes in wiring, caps, etc...
Re that Leak amp above, Solen caps combined with Duelund... Might try the Clarity TC caps there instead.
Yes Sir try those Clarity TC with Duelund. Very good combo. Put the Duelund first.
Not all class "D" amps are equal. Meaning the modules themselves. Off the shelf class "D" switching power supplies and power modules are not the good ones out there.
The power supply is key. Arions power supplies are not off the shelf supplies. They are custom designed and manufactured by a Military manf. who specializes in Submarine power supplies. No B&O or Ncore modules here.
The analog board as well is custom designed and choke regulated utilizing a 6H30 super tube for the input. With both low and high gain outputs available one can optimize the preamp synergy.
In my experience class "D" needs some meat on the bone. I agree with Bill baker hybrid offers more in class "D". Great as designed with the ability to swap tubes.
To date we love the Reflector DR 6H30 but the cryo Sovtek or EH are different and depends on what output cap one has installed. The stock version with a Cardas cap likes the cryo Sovtek and the Duelund likes the Reflector. You have options.
Accuracy and presence with emotion are the hybrid class "D".
charles