So with that info I can hypothetically just replace the OT in my current set up, without changing the tube arrangement, and have clean power with my amp dimed?
I was intrigued by the output power of the 8417 tubes on the link you posted( http://www.mif.pg.gda.pl/homepages/f...168/8/8417.pdf )so I did some looking into those as an option. turns out they are very rare and expensive, but folks are suggesting tungsol KT120's as a replacement. http://www.tubedepot.com/ts-kt120.html
Looks like a pair of KT120's can put out 150 watts under the right circumstances. Do you think I safely can use a pair of them in my Windsor?