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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
ken1967
24 posts
 
Hello,

Can anyone tell me if Graaf GM 13.5b can tape to 220v from 120v internally ? Anyone have schematic or manual of dong this?. Please help. Many thanks

Regards
Ken
samhar
1,048 posts
 
8 years this this has been going!!! Drv what did you do???
pani
1,217 posts
 
Which Graaf amplifier can drive an ATC SCM40 in a medium sized room ?
mirtysan
4 posts
 
Anyone.But i strong suggest you to find and try the Modena monoblock.Or place two Gm 20 in biamp connection
andromedaaudio
170 posts
 
Yes i have had the GM 200 OTL for about 2,5 years and ive heard the GM 20 as well , i sold it off after i listened 3 months to them on my new speakers with a diamond high frequency cone .
The smooth topend what i had with the graaf tube amp and i was missing with SS was merely a tweeter problem in my case , my highs are almost as sweet with ss as with tubes (zanden exepted ).
Further very good amps, spatial/dynamic as well , i sold them merely because they need new tubes once in while , and with the 32 in the GM 200 it will not be chaep, the bass is a bitt more rounded than with the krells but also beatifull , i rank them in the top of poweramps
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