Martin Logan speakers

I probably should stay quiet, but here's my (limited, very limited) experience with ML's:  I loved the sound but found that the " sweet spot" was incredibly tiny, and that even a half-head's width off of that led to such a stunning drop in sound I could not consider them.  Maybe it was the pair I was auditioning, not sure.  Others may have had a different experience.

I have listened to the M-L Montis in a VERY large room with cathedral ceiling.  Because of the room size we sat farther from the speakers than in most installations and experienced a much wider sweet spot. As has been said here so many times, so much depends upon the space in which you listen.

jcder

I love ML speakers and have owned a few, but with the right amp if your to get the very best from them .
Most ML speakers dive down to less than 1ohm in the highs 10-20khz, this could very well reduce the sparkle and extension in the highs, using the AR tube amp/s it may sound distant and recessed. Also very hard for a tube is around 4.5khz were it’s 3ohm and -60degrees negative phase angle, this could reduce "presence" using tube as an amp.
Here is a shot of the Montis impedance/phase graph, which will be very similar to the Vista.
https://www.stereophile.com/images/912Montisfig1.jpg

Cheers George

I was a Martin Logan dealer for many years and have personally owned almost every speaker they have made and have setup well over 100 pairs.

The Vistas are not that hard to drive, (90db sensitivity).  The ARC VT130 should have no problem.  That said, IMHO, the Martin Logans will perform better with higher powered amps, but decent tube amplification can be a wonderful thing.

In the right room and set up properly, Martin Logans are hard to beat.

I have owned several , one flow even in their best is  average capacitors . I had the 11A. Solen, And gum drop type nothing special I replaced with big Clarity CSA,on bass ,and Mundorf Supreme Huge upgrade. Why they are so cheap is beyond me 
myself and other have told them ,on deaf ears Maggie same crap.
even their $80k flagship cheap Mundorf Evo give me a break .
at least use the Black Supreme, , Silver Gold oil in flagship
all competitors use better Xover capacitors , resistors, And inductors are good , itmakes no sence.