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My Jadis Int amp. distorts in the upper mid-range


Hi All
Just bought a Jadis Orchestra Refference Integrated amp. (used) - and it's distorting in the upper mid-range levels..

It uses 4x KT-90, and 2x ECC83 imput tubes, with about 400 hours on them - and were the ones originally supplied new from Jadis.

I have 100% elliminated my other components as a posible sourse of the distortion..

Please help !!

Also: If I have to change my tubes, does anyone have first hand experience at what tube upgrade is PERFECT for the Jadis Orchestra Reference Int. amp.

Thanks
saffy

Showing 3 responses by saffy

saffy's avatar
saffy OP
81 posts
 
Hi
Sorry - the distortion is coming from BOTH channels, and my connections are tight and in order. They are ALL top of the Line Virtual Dynamics.

My previous amp./preamp. was top of the line Krell so I don't think new-found resolution is an issue -but good point.

I have elliminated my other equipmnet based on :
Someone lent me a ART Audio Class-a tube amp. 2-weeks prior to the Jadis and it sounded perfect - super actually.
Also I happen to have 2-sets of speakers right now, and the distortion exists in both.

Both speakers are rated 89BB and, I keep the Jadis about 1/3 volume.

My sourse is Meitner Transport and DAC.

Thanks for your help !
saffy's avatar
saffy OP
81 posts
 
SAFFY UPDATE
The distortion is at low and medium levels - therefore clipping I believe is not the issue.
I have plenty of power and the speakers generally love tubes.
saffy's avatar
saffy OP
81 posts
 
Thanks Guys - it was the Bias - Saffy
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