You can run them with 100 watt SS or 50 watt tube, but they will not do all they can do with less than 500 watts a side at 4 omhs,stable to 2 ohms.
Proved many a time, to many people.
An EE Professor cum audiophile at U of Wisconsin proved it to me,
Proved many a time, to many people.
An EE Professor cum audiophile at U of Wisconsin proved it to me,

