First let me say #1)tubes and klipsch La Scalas sound very magical. #2)The Macintosh MC275 iconic tube amp , Has been in existence since 1961 obviously there are changes since then i e speaker terminals power cord etc. etc. but the base of the iconic Mac 275 has not change. You’d be hard-pressed to find something that sounds better! I get it they’re very expensive and you can usually get a used one at about half the price of a new one or even less. when you hooked up your La Scala‘s what was your friend was it solid state or was that tube also? There’s a lot of rule of thought regarding how to get the tube sound without breaking the bank. One way is get a nice solid-state a.m. and get a tube Preamp .... save you a little money powers very expensive if it’s tube and you still get that tubes out from the preamp there may be ones out there that don’t agree with me and that’s fine this is all subject to your taste. I’m sorry your first purchase with Amazon regarding a tube amp didn’t go well, but a dealership was nice enough to allow you to audition a Mac MC 275. To get that amps Full experience with your speakers you would need a tube preamp, with that said if you would have a tube preamp then you’re comparing apples to apples oranges to oranges solid-state to tube. Not all people like the sound of tube they sound very warm you get the feeling of the instruments they’re not harsh they’re not sterile in the way they reproduce the music they have a lot of warmth and nuances as if it was a live concert.... good luck on your journey regarding Finding a good integrated receiver/amplifier.Enjoy the video my friend