Mcintosh MC275 alternatives?

Look at the McIntosh MC2301 tube monoblock amps.

Mike

I'm not too familiar with tube designs, but would the Cary CAD-120S work?

Depending on speakers…. I wouldn’t rule out the Atma-Sphere M-60 or the Atma-Sphere Class D

Quicksilver “40 watt Mid Monos. Not pretty but no better amp available.”

Ugly amps need love too 

I have owned these amps since early 2015 .  They were only 13 months old when I got them.  I can not say enough good things about Quicksliver in general.  I have Mike’s Headphone amp and that is phenomenal too.  It’s built like a tank and super reliable like all Quicksilver amps    
 

I bought a new preamp last year and it really demonstrated how great they are  

Excellent value  

Rogue M180 monoblocks. I own the "dark" version, as well as a pair of MC-275 MKVI. The M180’s are more powerful and more transparent. I think they’re one of the best amplifier buys in audio.