Next step: tube pre or tube power amp?


I own a Rotel pre/pro RSP-985 SS preamp and a matching Rotel 120 watt power amp. If I wanted to move into tubes, would I get better mileage out of a tube pre or tube power amp?

I love the convenience of the rotel preamp (remote, built in DACS etc) but I understand that a tube pre will have more impact than just a tube power amp. Is this correct?

Also, my speakers are 91db efficient. What wattage tube power amp would I need to drive them to medium/loud levels?

thanks

Steve
stevecuss
A tube amp will make more of a difference than you think. I went from a Carver C-1 Pre to a Cary SLP98P and thought it made a big difference. Then I went from a McIntosh 7270 SS Amp to a Cary CAD 120S Tube amp and it makes a HUGE difference. Good luck in whichever direction you move towards, I think you'll love the tube sound.
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While your speaker profile will come into play, I can't quite agree with Tvad's numbers. I've been driving a pair of speakers that are 8 ohms nominal and 4 ohms minimal, 89 db sensitivity, in a fairly large room with a 80 wpc tube amp for a year now with no problems.

Tube amps will give you more *tube* flavor than a tube preamp, however, if your speakers are a difficult load, a tube preamp is the way to go. Another possibility is a good tube integrated amp.....plenty of them out there.

Cheers,
John