My audio system sits on a console under my TV.  I'm having a new TV installed on Friday and want to make sure that the lower edge will clear the amplifiers.

How tall is the Sarah with Cryotone or Western Electric 300Bs installed?  I have a full set of Cryotones waiting but may try the WEs at some point (or others).  I'm not sure if they're all different heights.

I've got a Sarah running with WE 300Bs, so I can give you a real-world measurement. With the tubes installed, mine stands just a bit over 9 inches tall at the highest point. The Cryotones are very close in height, only a small difference, maybe a few millimeters, nothing that would change clearance in any meaningful way. If your TV is going up on Friday, I’d leave yourself at least 10 inches of space just to be safe, especially considering heat ventilation.