Sanders magtech or odyssey kismet


I am looking for a "last amp purchase" one I can keep for 20+ years and pass down to my son someday.
This probably won't happen, but it is a very good possibility.

I have gone through numerous over the years, with fairly bad luck with them, UNRELIABILITY!

I have narrowed it to these two amps. I know they are both very good.

I would like thoughts on them from other audio people as yourselves.
Before you say these speakers suck, I wanted to say I auditioned A LOT of different ones before settling on these. I use energy rc-70's, only about 45-50 hours on them, nowhere near broken in yet. I LOVE their sound, period.

People say these amps are too good for the speaks, I think not.
Maybe sanders preamp.

I have heard magtech sounds thin, and others say it's amazing.

Anyway, what's your thoughts on odyssey kismet monos or sanders magtech. Thanks
128x128arcticdeth
the Sanders Magtech & ESL amps are meant to drive ESL speakers. That doesnt mean that they cannot drive other speakers...
.....but you have to understand the difference, electrically, between an ESL & a cone-driver speaker.
An ESL can be thought of as a huge capacitor. The impedance profile of a capacitor is XC= 1/2*pi*f*C. I.E. when the freq is low (bass), the impedance of an ESL is very high. When the freq is high (treble) the impedance of an ESL is very low. Exactly opposite of a cone-driver speaker. Another difference is that an ESL is a voltage driven speaker - remember it's a capacitor & a capacitor is a voltage-driven device. 
A cone-driver speaker, 99% of the time, is a current-driven device since it often has a much lower impedance. 
Therefore, if you read the Magtech & ESL specs, you will find that their rails voltages are very high. This is done to develop sufficient voltage at the speaker terminals. You might not need such high rail voltages for your Energy RC-70 speakers but i think you will need a lot more current. 
Keep this info in mind as you make your selection....
Bombaywalla---Does the voltage-centric nature of the Sanders design make it a less-than-optimum match for the current-hungry Magneplanar speakers?
bdp24,
the correct answer is that I'm not sure.........
..........but if I read between the lines then 
* if you see the electrical specs, you see 500W/ch in 8 & 900W/ch into 4 (Magtech).
* if you see the weight, you see it's just 55lbs. When did you last come across a 500W/ch in 8 Ohms that weighed just 55 lbs? In my experience once the amp is 500W/ch into 8 the weight of the amp is well north of 100lbs if they are high current. 
Maybe this amp is suitable for Magneplanars? The best would be to ask Roger. He's very helpful & a really nice person to talk to...
Thanks, I believe I'll do that. I'm about to set up a pair of Tympani IV's, and am gonna need more amp! Only for the two bass panels, so the amp doesn't need a great midrange and high end. Maybe a Pro amp like a Crown will do. They're cheap. 
@bdp24-  Much of the venue ambiance info in your recording resides in in the lower few octaves.   Use a Crown amp and you'll lose it.   I've been using a slightly modded TransNova 9505, to drive my transmission line woofers, with excellent results in that regard.