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Opinions on Graaf Amps

Does anybody have any expereince with Graaf OTL amps? I'm especially interested in the little GM 20 but don't have a chance to listen to it where I live. Has anybody heard it? In my search for a new amp I have listened to the Carys (572s) and found them overall too bloomy. I don't like tube amps that try to sound like solid state (i.e., Audio Research or BAT) but I also don't want the tubes to color the sound too much. I've tried the Atma-Sphere S 30 which sounded terrific in my system, open, airy and very musical, but it just runs too hot. So now I am considering the Graaf or perhaps an Air Tight. Any thoughts would be appreciated.

My system:

Joule Electra LA 100 MK-III
Merlin VSM + BAM
Audiomeca Keops as transport and Audio Logic 2400 DAC
JPS Super + speaker cables, FX interconnects, and Power Cords

Many thanks,

Dr V
drv

Showing 1 response by zebshaw

zebshaw
1 posts
 
Hi,

My GM20 has just blown up for the second time this year, taking the driver of one of my Duevel Bella Lunas with it.

We're having some trouble fixing it and wondered if anyone has a service sheet with voltages and/or a circuit diagram?

I look forward to hearing from you, Zeb

PS Since it's spending more time being fixed than working these days I'm also interested in an inexpensive used amp that I could get for whilst it is being repaired. Ideally balanced, probably valve, maybe KT88s.
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