PrimaLuna Evo 200 underwhelming

I have an Primaluna EVO 100 intgrated with Bluesound node 2i, innuos mini Mk III. The sound is breathtaking on my 8"   5 cu ft DYI 3 way towers. All with the stock tubes.  Not sure what to say other than you have a mismatch somewhere. My speakers are rated for 70w RMS. The bass is solid, low, slams. Highs are velvet voices and dynamic. I listen to Rock, Jazz, movie sound tracks, country, Christian, oldies from 60s, 60s, 70s, 80s. Bad recordings are noticeable.  Good ones , oh my gosh. 

I saw a post here stating that the 7581 tube was a direct sub for the el34. I don't believe that is correct. The 7581 replaces a 6L6/KT66, etc. 

What does a red LED to the right indicate?(Their manual download from PL/HQ only has up to page 10)

Well the red LED is Ultra Linear, and then green is Triode mode.

@keeferdog Wow. You weren’t kidding (I didn’t think you were). Today I received and installed a set of 8 KT150s from TubeDepot and I am putting my PrimaLuna Dialogue Premium HP through its initial workout of a very big playlist via Roon/Qobuz. This is an entirely new amp! Where do I start? Compared to the stock EL34s, the soundstage is huge. Imaging is great. Bass and sub bass is big and tight. Everything is bigger and more forward. Highs on cymbals and high hats are discrete. It is just better in every way. And this is just on the initial listening session right out of their boxes! Before these KT150s I was thinking of selling this PrimaLuna. It was just ho-hum. Now? Unreal. This thing is going nowhere. Thanks for the tip on the KT150s. By the way, TubeDepot was great to work with and very responsive to my shipping concerns and everything worked out. I will let them know too. If any of you own a PL, check your manual. If you can use KT150s! It will revolutionize your amp. No kidding.