Vandersteen updates and amplifiers


Seeking experience and advice. I have the Vandersteen Quatro Wood (non-CT) and have enjoyed them on a large variety of music for the past 7 years or so. I have been able to hear changes with improvements in upstream gear and tweaks. I use a Pass Labs XP-27 phono - XP-22 Pre and the good ol XA 30.5 to power the Quatro. Balanced M5 boxes.  

Two things recently elevated the performance of the Vandersteen's in my room. First was the addition of Isoacoustic Gaia I footers. I was pretty skeptical about using these as Vandersteen designs to couple the speakers to the floor. These footers are supposed to decouple. But I felt is was worth trying because the speakers are positioned on a suspended wooden floor above a storage area in my house. I had to use the more expensive Gaia I because the 110 lb Quatro has to be supported with just 3 footers. Also, I had to buy 8 not 6 footers. It was not difficult to maintain the appropriate tilt angle by adjusting the footers. Be aware that the rear spike threads are different than the front. After many weeks of use, I think they are a significant improvement. The quality of the imaging and the tonal richness of the midrange expanded to my ears. More palpable presence in the room, better separation of instruments so that you can hear into the recording better. The bass quality changed almost like adjusting the Q. The bass may be a little less high impact and certainly less is transmitted into the floor, but overall bass better integrated into the music.

The second change was the addition of an HRS S platform under the Pass XA 30.5. This is the only component of the system that is near the speakers and in the high acoustic energy zone. Improvements in detail and clarity were not subtle. Very impressed!

So, fellow audiogoners, what might be the next steps for me if I choose to stick with the Vandersteen sound. I hear good things about Vandersteen M5 HPA mono's. This would eliminate the M5 boxes and the Pass XA 30.5. For the same price I could probably trade in the XA 30.5 for a more powerful .8 series amp.  Anyone with experience want to share? I would also consider updating to the Quatro CT if that would be a similar jump in performance. The Quatro seems to be the right size for my medium/large room. 
karl_desch
I just spent an enjoyable two weeks of evenings listening to the 7’s and 7’s and will look at my listening history and try to finish those impressions I have of the 7 amps. I just posted A lp photo of unboxing them on my Poverty Bay Sound page
I had the pleasure of being able to spend more time with Jon at Ultra Fidelis this week.  This time the Kënto's were setup with the same electronics as my last session with the Quatro CT. The speakers were in similar but not identical positions as Jon spends a lot of blood sweat and tears to get the positions of each speaker right. The M5-HPA were again driving the loudspeakers.

The Këntos certainly look a lot more like the Quatros than the 5 Carbons they replace. They are slightly taller and have a wider base to accommodate the larger bass drivers compared to the Quatro.  They have an integrated platform with three spikes to couple to the floor. Although not as clean from a design standpoint, they certainly look very well constructed and will not dominate a living room.

Although they look like the Quatros, I think they sound much more like the 7s.  This was immediately apparent in the clean and controlled presentation. Imaging and bass integration was spectacular. My avatar friend David Bowie's voice was just hanging right there in the center of the room on several tracks from Hunky Dory. You could hear all the intonations in his singing and all the supporting instruments even when things got busy. Like the quatros, I felt I was hearing another 30% of the recording that I had been missing. Really kind of hallucinogenic!  

These Këntos come across as more mellow than the Quatros.  I had the urge to keep turning them up.  I have no idea what decibels I was hitting but the pre level was comparable to the Quatro setup if not a little higher.  Maybe these are less efficient speakers than the Quatro but it also may be the lower distortion coming out of the carbon/balsa midrange driver.  This allows a listener to just increase the volume till you get the level of information you want.  Never heard anything like this before. I felt like the Quatros got the information but also had more edge and energy in the midrange and upper frequencies relative to the Kënto, especially as the decibels got higher.

This demo was helpful to me as I was able to listen to how the M5-HPA perform on an even more transparent speaker like the Kënto.  I have to say that I am very impressed with these monoblocks. Would have been interesting to sub in a different amp, like my Pass, to really hear what each adds (or doesn't add) to the sound. But I think the best way to do that is to get a pair of M5-HPA into my own system at home.  

-Karl
@karl_desch ,
Great post.
The Vandy amps are on my dream list, but owning not only the Atma MA-1's, but the Ayre MX-R's, I feel truly blessed.
If at all possible, I would try to audition the Ayre KX-R preamp.
I have no experience with the ARC preamp you listened to, but my experience with the Ayre really floored me.
Bob
@gdnrbob.  Preamp!  Oh no!  I got to keep this search to amps and speakers.  I would love to hear the Atma MA-1, the Ayre MX-R and the Aesthetix Atlas. All Amps with “A”s. Just not sure how I make that happen in Ann Arbor.