ARC Ref150 or Aesthetix Atlas with Vandersteen 5A

Hard to make decisions based on a show as the total system and room impact the sound. The Atlas is a known great match with your speakers and often shown together. The Atlas is a superb sounding amp and you should try one or several amps before deciding.

Can you work with a local dealer? You really need to hear these amps in your system and room. You may also like a different sound presentation vs. another.

I own the Atlas stereo amp and with a good power cord and upgraded NOS tubes, it just sings - very musical amp.

You might search out John Rutan @ AudioConnection. Expert with Vandys and amps.

Depends on your taste. Some people like ARC with Vandies. I much prefer the TOTL Aesthetix or Ayre with the Vandies.

Definitely give John Rutan a call. Besides a great guy, he really knows Vandy's and which equip. sounds the best with them. Audioconnection in NJ.

I agree with Keithr about Audio Connection. I've done business with them. John's probably the best Vandersteen person out there; besides Vandersteen himself.

Also, with regards to your amp, have you ever listened to an Ayre/Vandersteen system? I know you like tubes (I do as well), but Ayre is not your typical SS amp.

Good luck with your system. What ever version Vand you end up with, you will definitely be happy.