Tube output stage


My beloved B&K Pro5 with a 6922 based custom output stage got fried by a unauthorised 220V input! Aargh!! Apart from a MF X10-D buffer, has anybody got any other(preferably cheaper suggestions? thanks folks
tubiwan
Post removed 
It wasn't that! The problem was @ the external power meter box: the list of stuff I lost...
another vote for surge protection and home owners insurance !

Sorry for your loss

Groovey