I can answer a few of your questions, Jim. I have a Dialogue One, which falls in the middle. I have no problems with RF interference. I have an outboard Jolida JD9 Phono Pre, and it works great! I have no hum or feedback issues. The Jolida has tubes too, as do some of the Bellaria's. My PL has a very low noise floor. You can turn it to full volume and not hear it at all. I am driving B&W 803N speakers, and the bass is very strong. But, I wouldn't call it "deep bass". Partly, that's the speakers, which are good to 40hz. I am strongly considering stepping up the ladder to the Premium HP, just for the tighter bass and more range. But, that's my preference, not really needed. It has plenty of bass for the majority of listeners.
Ayon's "Scorpio" tube imtegrated amp vs PrimaLuna Dialogue Premium tube integrated??.
I have considered trying a tube integrated amp. The Prima Luna Prologue Premium has received numerous positive testimonials regarding its sound quality and is considered a bargain at $2399. Ayon’s new "Scorpian" tube integrated is more expensive at $4200, supposedly offers excellent sound quality, but has not gathered many press reviews. .
Is anyone familiar with these products?? Are they reliable over the long haul?? and if so, can either amp effectively drive any speaker load, including Golden Ear Technology model 7 or the larger model 5. Or have any problems driving Magneplanar .7 speaker, or any of the Martin Logan speakers. Thank you