enough amplifier power

My Vandersteens are 87db efficient and work great with 120 wpc .. I generally don't listen much above 90db SPLs.. Probably a Pass Labs Int-60 (which is rated conservatively) would be more than enough for the Vandies.
I wouldn't mind having speakers that are 93-96db, and then I could run the Linear Tube Audio integrated amp (20W) that I covet. I don't lose sleep over it, as I like my current speakers.

In my second system I use 65 wpc Ayon Spirit 2 tube integrated with my JM Reynaud Offrande Supreme V2s which are 90DB. More than enough power and more loss of musicality without going beyond 10-11 "o’clock".

In my main system I have Daedalus Argos V2 which are 97.5DB. I rotate between 3 amps every couple of weeks ; 22wpc Line Magnetic 518IA 22wpc 845 tube SET; a Finale Audio 7189 MK2 7189a/EL84M 22wpc tube pushpull; and Modwright LS100pre/KWA100SE 120wpc SS. The 22wpc amps don’t give anything up vis a vis the Modwright’s 120wpc, just differences in sound between the 3 amps

The golden rule is that your amplifier should be about twice as powerful as your speaker can handle (RMS or peak, as long as both devices are measured the same way).

This is for a safety margin to be able to handle clipping.  If your amplifier can soft clip, then pretty much anything goes, as long as you can live with the distortions of either, when pushed to their limits.

@cakyol completely agree. 
 Had a good hour and a half+ conversation with Roger Sanders a while back.
we covered quite a bit, I asked so many questions, he answered every question with complete care, and when I asked him “English please”
 he explained everything so I can understand. A damn good dude!”

  You need minimum double the watts for a given speakers continuous rating. Headroom, with the amps ability to stay absolutely stable, and with complete ease to drive the speaker to the limits (vol knob) to what you want with no clipping what so ever. 
   I’ve been a believer of this for the past 20 years. Once I talked to my audio guys from simply stereo in.............YES, orland park, ILL.  back on about 1990-1993 I think.  Loved those guys, wish I still had contact with them. They were my heroes back then, and taught me a lot about audio, brands, speakers' amps, cables' etc etc.   

 Anyway. I’m a believer of never enough power, for the ease to drive music without the possibility of clipping  


Aaahhhhh. Bushmills 21!
    

Sorry. I don’t get the argument here.

So the OP has a 1.5 watt amp, then complains that amplifier power is necessary to enjoy really good sound???

My speakers are rated at 90 dB/w/m. Average sensitivity. My amplifier is rated 90 w/ch clean. So??

I rarely use more than 5 watts/ch of power for loud listening levels. 

So, what am I missing here? Is 85 watts headroom not enough?? 

Is this some example of “Common Core” math???