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 3 responses by veroman

good comments mostly. JOLIDA amps used and modified will get it done in that price. 86 db is low tho and even tho amp offers 4 ohm outputs, if your room is large and you like it loud you may need more watts. thiels do like power but i am sure tubes work fine as long as watts are there. $1000 is getting kinda thin for more than 60wpc choices imo. i use 60 wpc unit with 89 db spkrs in larger open sided room and need most of it for big stuff peaks. your room will determine much. closed rooms offer 'free' boost in spl level which can mean a lot when you have to double down power needs at higher levels. imo a watt is a watt until you get clipping. just different sound tween ss and tubes
after rereading above posts... i'm going further on the limb. fwiw, i think you are gonna 'need' more than 60 wpc of tubes to get 'er done. honestly i think thiels work best with lotsa juice. ss gets it done of course but you want to delve into tubes and being a convert myself i encourage others. never owned thiels but have auditioned them and they can sound kinda listless, yet defined, w/o enuf power. if you could hook them up to tubes and audition i think you would not need any of this contradictory advice. good luck! fwiw, 86 db design is a stretch in $1K 50wpc arena. personally i'd want 100wpc but your listening tastes are unknown to me
rascal, listen well to unsound advice. he has firsthand knowledge and based on my exp with jolida 60 wpc and$$$ he is right on the mark. a watt is a watt basically. thiels need POWER! an old tube amp is no more powerful than a new used tube amp. shop around awhile if you can but 60 wpc in a tube is not more than 60 watts from ss even if the ss has a rolled off clipping circuit like NAD offers. unsound has spoken with thiel himself and is really doing you a great service. 60 wpc may sound good but 100 is going to make them sound as good as they should. fwiw, in your $$$ range the sonic differences between tube amps is not as imp. as wpc in the case of driving low eff. speakers. ;)