Is there a such too much power for speakers?

Like most dealers, this one would like to make a big sale, but advising to buy a $75k amp is probably not the best advice.  Such an amp might be marginally superior to a $15k amp, but one would be spending a premium of 60,000 to possibly get a small improvement.

More power or wattage is generally better than less, because of the dynamic swings in various types of music.  A drum beat may need 15 db of extra volume to be adequately represented at the listening position, which translates to 5 times the wattage level.  So if one's amp is running at 5 watts, then 160 watts will be needed, and more if the speakers have an impedance dip at the specific frequency.

I've run 100 watt speakers with 300 watt amps with no problem.  But you have to determine not to go past a safe volume or else over drive the speakers.  As others have said, it's easier to damage speakers by under powering them.  

For most situations, 300 watts is plenty.  But the speakers in question may be able to handle far more.  Going a hundred or 2 above their power rating would be safe for the most part.

@213runnin_+1,
Bob

Out of curiosity, nasaman, what is the brand and model of the 75k amp?  

I am more familiar with the Stradivari.  I have helped with the setup of three systems using that speaker.  The Elipsa looks like a slightly smaller version of the Stradivari.  The Stradivari did not require high power to sound good.  I don't expect that the Elipsa needs really high power to sound good and it probably cannot absorb as much power and deliver quite the same volume level as the Stradivari.  I have not heard many speakers that really "need" more than 100 watts, and I doubt that the Elipsa would be one of those kinds of speakers.

There are tradeoffs involved in any choice of amplifier.  The higher the output, the more output devices run in parallel are needed and the sound does suffer in some ways from this design choice.  I find this particularly the case with tube amps; and with a lot of manufacturer's lines, I prefer their lower power and cheaper amps when the speakers are appropriately efficient.  

I am not saying that a high-powered tube amp is not appropriate; it is just that you should not automatically rule out amps that are in the power range of your current amps under the impression that it is more power that is needed for improved sound.  While you expressed a preference for tube amps, if you do find that more power is what is needed, you should consider solid state amps.  Some solid state amps are quite decent where a bit more power is the requirement (e.g., look at Ayre amps).

@dwmaggie,
I listed them all up on my last response including wattage and price. They are all within the brand VTL. Happy to share again as below:
. Speakers SonusFaber Elipsa SE
. current amp VTL ST-150, 120wpc, $6000
***In discussion:
. VTL S-200, 200wpc, $12k
. VTL S-400, 300wpc, $25k
. VTL mb-450, 425wpc, $25k
. VTL Seifried, 650wpc, $75k