Tube amps under $7500

For $7,500 you can get a PrimaLuna EVO 400 integrated and swap the EL34s for KT150s. I did, and hear added body and slam, and a wider soundstage.

If you go with a pair of Atma-Sphere M-60's (a great amp, which I have owned) or S-30, for use with a 4 ohm loudspeaker you will need the Z-Music Transformer, which raises the impedance the amp sees. OTL amps don't like low impedences.

Ayon Spirit. You can use it as a power or preamp or integrated 

@bdp24 Appreciate the warning. At this stage I should focus on amps with dedicated 4 ohm tap.

@passthedutchie Like you I would naturally incline to KT150s and wonder why the unit costs $400 less with these vs. stock EL34. 

Always a BIG fan of RM’s Music Reference work…including the power amps…but they are super neutral ….hardly overly tubey but very very musical… get fantastic RAM tubes for them !  9 mk2 or the 200. IF you have fairly efficient speakers or don’t listen loud, try to find the RM-10 version w hand wound by RM transformers…. a grail amplifier…imo….