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How do tube Watts compare to SS Watts?

I have Theil 2.2 speakers, which have a low sensitivity (86dB), but I would like to get an intergrated tube amp. Or even all tube. But I don't know how many tube Watts I'll need to drive the Theils. My guesstimate is @ 50wpc for intergrated tube amps, but that could be wildly off. Are their mathematical conversion formulas? Second, if there is a rough range, might you be kind enough to suggest a few worthy candidates that, wheather new or pre-listened, are under $1,000 USD (e.g., Cayin model xxx). Thank you most kindly.
rascal52240

Showing 1 response by kt_88

kt_88
242 posts
 
I powered a pair of Vandersteen Model 3 speakers with Quicksilver tube M-60 amps ( rated at 60 watts ) During that time I did a demo with a CJ MF2300 ( rated at 200 watts ) I could not hear a significant difference other than a bit more bass. I was under the influence that when comparing watts " tubes to ss " you doubled the rating for tubes.

60 watts tubes would be equal to 120 watts ss.

I would say that 80-120 watts would be necessary in your case though.
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