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Tube Amp for Green Mountain Audio Callisto

i'm considering switching to a tube amp to drive my GMA Callisto speakers and hoping to get recommendations from folks that have done so. What tube amps would pair well with the callistos?

The speakers have the following specs:
Impedance: 4.8 Ohms, +/- 0.75 Ohms from 100Hz to 20kHz
Sensitivity: 90dB

What would be the minimum power i can get by with? i don't listen at ear bleeding levels... maybe 80 db 12 feet from the speakers.

thanks in advance for any suggestions!

-Scott
srosenberg

Showing 2 responses by bombaywalla

bombaywalla's avatar
bombaywalla
1,958 posts
 
Scott,
Tho' I not owned the exact speaker you own, I did own the Green Mtn C1.5i 3-way floor-stander. My speaker was a 6-Ohm load just as benign as your stand-mount. I was quite successful driving my floor-standers using 2 very modest amps - the Jolida 502A, which was/is 60W/ch in ultra-linear mode & the AES/Cary Sixpac, which was/is also 60W/ch (because I had an upgraded power xformer) but this time in triode mode using EL34.
Both tube amps created beautiful, seductive music. My personal favourite was the AES/Cary Sixpac.
I believe that you could try either tube amp for not much money (considering the times). FWIW. Good luck!
bombaywalla's avatar
bombaywalla
1,958 posts
 
but I have owned a set of AES Sixpacs and thought they sounded great. You can run these amps with zero-negative feedback. They only have a couple of drawbacks - they produce a bit of heat and with 12 EL-34 power tubes, they ain't cheap to re-tube. That being said, if I was in the market for tube monoblocks, the AES Sixpacs would be on my shortlist.
Nrenter
Amen! I too owned a pair that drove my Green Mtn C1.5i floorstanders & I too can say that I really liked the sound of the combination.

If the originator of this thread is looking for tube monos this is one amp that he should short-list.
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