Yes it puts out a lot heat, but that’s the cost of 48 watts of SET magic. ~~~~~~~~~~~~~~~~~~~~~~~~~
Heat factor might be a issue for some folks. But the trade off is worth it, Just find a way to add a fan or AC. DHT’s are the real deal. I know when I get KT90’s in my Defy it will give the big DHT’s a run for their money, 88’s are too **bloomy** in midrange for my FR MIDRANGE speakers. PL are made in same plant as Cayin, which is well known for super quality, craftmanship/sonics. I bought a older model PL linestage, Prologue 3, (??) had like 6 12AU7’s, my fav pre tube.. I did not do a long testing, as i found the sound a bit *unusual*. I quickly returned to seller with my generous 20% restock fee, + I paid ship both ways. Out like $500++ but at least I did not have to keep it. all AU’s in a linestage is not the right design. There has to be some AX’s to make a linestage sound correct. So PL droped the ball on that model,,luckily they droped that model. . Cayin IMHO is slightly superior to PL. PL does not offer any DHT models. = cancel PL. My interested has shifted totally away from KT amplifiers. The DHT’s offer a nuance in midrange that holds my interest.
KT vs DHT, both very close, but my vote goes DHT.
~~~~~If you have xover low sensitivity speakers, you can not use a DHT. You will miss that DHT magic.
