I have a set of VPA's that are in really minty condition for sale. they are 50 WPC, utilizing four 845 tubes total. (two each) They were sent back to the USA distributor for fine tuning/ check up, and have a clean bill of health. they have never been molested by unqualified techs, and as I always suggest: condition, condition, condition. I've heard stories from the Nagra-authorized factory tech about many "un-Swiss- like" workmanship that have been done to these things... repairs that have been soldered directly onto legs of components that were simply snipped off and not unsoldered properly. comes with the $2200 tube protectors.