bcowen
Headphoneus Supremus
You picked the right one. Price is a little high for a single tube, but not terrible.OK, thanks. I'm thinking of just picking one of these up. The ship time is brutal going to March, but it seems pretty popular on here. Some complained about the bass slam, but I guess it'll be 'smoother' compared to new production tubes. The highs are the most annoying for me right now.
Next time I'll know to take the front page recommendations at face value (literally looking for ribbed in description + '53 or circa those years).
I would say however that bass slam with NOS from Schiit have always had more slam than new production though, IMO. My Valhalla and Vali for example.
The ribbed anode (or plate) configuration was from 1951 through part of 1956. Appears the plate style was changed sometime in 1956 as some '56's have ribs and some have the smooth plates like the 1957's and later.