Sanders Magtech
Thanks. What other amps have you compared with Magtech. Magtech is in my list, as well as Pass XA100.5.
On the Pass I've only heard of guys using the larger amps and was thinking the XA-100 might struggle on that basis.
You are right about Karan in general. I heard the integrated amp and it was lovely, but I think it's underpowered for Maggies.
To get a Karan with enough power (IMHO) you are in a completely different price league to the magtech - and I still reckon the magtech would give it a good run for its money (being a magtech owner, I am biased though )
Within 10000 USD.
Others that I understand pair well with Maggies are Bryston and Pass Labs. I also think the other suggestions above would also be good mates to those speakers as well. The Absolute Sound reporters fawned over the 3.7i's paired with Pass Lab amps at the most recent Chicago show, so you might look into that particularly.
If you're looking at Pass, with your budget, you might have to go with a used X-350/X-600.5 or something similar. I know Ki paired his Maggie 20 series with Bryston 28 mono's.
Low output impedance helps control panel modes, leading to big amps. Plus they are 4 ohm impedance (mostly) and inefficient so high power is nice to have.
Magnepan has been displaying with Bryston lately and that has always been one of my favorite pairings. Of course, I use inexpensive Emotiva amps and am happy now, probably because I cannot afford and therefore do not want to listen to higher-priced models.
I have almost zero experience with the new Mac amps (one quick listen). In the past, I have found their autoformer output would sometimes struggle with the lower HF impedance of the ribbon, but could never quite convince myself it made a significant difference or was even really an issue. I don't think I measured the combo (the Mac was not happy with ESL's, HF distortion rose significantly though always debatable if it was audible).
Most any decent SS amp should do fine, as well as a lot of tube amps. I love the sound of tubes driving Maggies, even while acknowledging they (tube amps) are typically more distorted, but never found a tube amp that did well on the bass panels. My last marriage of a Counterpoint (yes, that long ago) hybrid amp for bass and ARC for mid/treble sounded great but the bass was still not as good when driven by a big Krell, ML, or Bryston. I'm a little surprised that, with all the resurgence of high-end tube amps, there aren't more hybrid (tube front end/SS output stage) amps around.
I have not heard the new Pass amps but they seem like a great match.
An on-line SPL calculator can help (but is not the end-all-be-all, and you have to add about 3 dB to the Maggies efficiency since they act like line sources over most of their frequency range). One like this: http://myhometheater.homestead.com/splcalculator.html
FWIFM - Don
Sorry, I last visited Magnepan ages ago, and they were using ARC. And ARC was using Magnepan. I have seen them demo'd with ARC and Bryston amps through the years, among others, but in the past few have not seen them with ARC, just Bryston (maybe I just missed those demos).
I had an ARC D-79 driving my Maggies and tried various others Including various CJ's through the Premier but was never happy with the bass. OTOH, as a techie, my thoughts on sound are not worth a damn on this site.
Sorry, I last visited Magnepan ages ago, and they were using ARC. And ARC was using Magnepan. I have seen them demo'd with ARC and Bryston amps through the years, among others, but in the past few have not seen them with ARC, just Bryston (maybe I just missed those demos).
I had an ARC D-79 driving my Maggies and tried various others Including various CJ's through the Premier but was never happy with the bass. OTOH, as a techie, my thoughts on sound are not worth a damn on this site.