I bought an Aric Audio Transcend Push Pull a few months ago and I’ve been delighted with it. Pure class A, triode or UL, variable gain and feedback using quality pots. You can run KT150, KT120, KT88, or El34 interchangeably, with varying power output, of course. I prefer KT150. Auto bias. Dead quiet. Sounds rich, dynamic, detailed, linear. For reference, I run several systems, two of which are SET-based (high quality 2a3 and 300b amps). This is probably the best sounding push pull amp I’ve used, and I owned a VAC 300.1a for six years, and also have a Manley Stingray II, which is El84 PP. With the upgraded Jupiter caps and a few other extras, it came in at $5k flat. A serious bargain. Aric is a genuine pleasure to work with and he really cares.