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Krell KSA100 vs Threshold 400A vs McCormack DNA 0.5

HiI need a 100W amplifier to drive my Morrison speakers. I Can easily refurbish electronics if needed. Someone offered me a Krell KSA100 another one offered me a Threshold 400A I have to repair and finally a McCormack DNA 0.5 or 1 seems appealing but I dont have any I could  buy.  I hate over detailed sound and I love tube amps mids but do'n want a tube amp. As I couldn't buy a Morrison woofer if I burn it with a faulty amp. I need something bullproof. I never heard and couldn't hear any amps mentionned with my setup.  What would be your preference or do you have any other recommendations ?
Thanks
legarem
legarem OP
20 posts
 
I finally bought a pair of Monarchy SM70 class A amps. Presently I use them in bridged mode (70W) with my Morisson speakers. What a surprise ! Relax effortless sound, huge soundstage. I simply love what I hear. As they are pure class A, they heat a lot but in my basement this is a good thing even in summer. The McCormack will be repaired this winter but i’m really not sure it could dethrone the Monarchy amps.
mrdecibel
2,898 posts
 
@legarem I have owned SM70s, and they were quite a bit better when driven balanced. Quite a night and day difference, actually. Enjoy ! MrD.
legarem OP
20 posts
 
But I think you can't use balanced input when you use them in bridged mode.
legarem OP
20 posts
 
After reading the instructions, I tried them in balanced bridged mode.  WOW ! These marvelous amps take a step ahead from unbalanced to balanced mode.  These amps are simply amazing amps. I took a chance and I'm really happy with the results I have with these amps.  Good timbre with effortless sound is what I was searching for.
mrdecibel
2,898 posts
 
@legarem Well, there ya go ! Enjoy ! MrD.
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