low power tube amp


I am purchasing some new speakers. The manufacturer recommends 40w-200w for the speakers.

I am using a low power 20wpc Class A SET amp.  I worry that the low wattage may damage the speakers.

Is my concern valid?  I heard tube amp wattage is not the same as solid state.  Can someone clarify?

thanks in advance
128x128klee123
The low wattage won't damage your speakers.  The only question is whether or not you're getting enough level and do they sound good.  If not and you love tubes, check out:

http://www.tubes4hifi.com/bob.htm#ST120
If the speaker choice is still open, consider some speakers that are more efficient (that is if you are planning to keep the amplifier).

I would be on the lookout for something in the 93-96db efficiency range; generally speaking its not a good idea to push a single-ended amplifier very hard (and FWIW, this amp poses no threat to the proposed speakers).