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Audio Research CA50 + tube rolling

I recently purchased an ARC CA50 which I like a lot. It betters the Cary SLI-80 sig IMO but that's beside the point.
My question is about tube rolling. Has anyone tried rolling either power or driver tubes in the CA50 and what were the results ?

The only info on the net regarding this is somewhat paranoid thread on diyAudio advising against this and suggesting that ARC designed this amp around Sovtek/EH 6922s
Personally I don't buy it.

I contacted ARC and spoke to some bland dude who I don't think even knew what the CA50 was.
He blurted out something about adjusting the voltage on the side panels of the amp if I want to change the driver tubes.

Anyway, your thoughts, suggestions, advice and experience (good or bad) with tube rolling in this amp will be greatly appreciated.

Thanks in advance to all replies.
akanrg
akanrg OP
15 posts
 
Geraldm121,

I wouldn't say I'm upset. I did a lot of reading before I purchased the amp and save for one discussion on diyAudio regarding tube rolling there was nothing else to suggest the amp is not a good candidate for tube rolling.
Either way, this is a very good sounding amp !
geraldm121
63 posts
 
Sorry, I did not mean to be so definitive :<}, I was more referring to the numerous discussions regarding Audible Illusions and Audio Research's problems with Various 6DJ8/6922 tubes when used in their equipment.I very much agree that when used within the restrictions imposed by it's power rating the CA50 truly gives you the Audio Research Sound.
akanrg OP
15 posts
 
No sweat man !
By the way, do you still own the CA50 ? I have couple of operational questions to ask...
geraldm121
63 posts
 
Yes I still have it (and it is up and running) what questions can I answer for you.

Jerry
akanrg OP
15 posts
 
Hi Jerry,

Is it normal for all the input lights to flash when you turn the amp on ?
Also, is there a sound from the speakers when you turn it off ?
Matt
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