How long for tube break in


After installing a new set of EL34 driver tubes, I'm wondering, how many hours until I can expect them to sound broken in? I've just gone back to tubes from a SS amp, and I'm missing the dynamics I thought I'd regain. They seem to be coming back, but then I just wonder if I'm getting used to the change. I'm using an AR LS25 MKll pre amp and a pair of Quicksilver M-80's into some Vandersteen 2C speakers. I've got about 60 hours on the new EL34 tubes now, (Sovteks). Does anyone know how the Quicksilvers match up against the AR power amps, for tube bloom? I was using the Monarchy 100 mono blocks before.

Thanks,
David
rolloff
I'm a firm supporter of the Svetlana's - they are a great tube and I have a life time supply ;-), however, since David complains of a lack of dynamics I would suggest that he consider Tesla (NOS) or JJ (New Production) E34L's (which will be biased hotter) or EL34's. They have a much crisper sonic signature than the Svetlana's. But the Svetlana's will be much warmer, my personal preference.
Foxtrot, Mechanically speaking, it all depends on how your amp is set up. Review your instruction manual.
Newbee, thanks for your replies, but the instruction manual of my Consonance M99 Plus is in Chinese....bought it over there.
Maybe I can ask the manufacturer to send me a copy in English.

Rgds,