I agree with Paraneer. It's not about loudness. A lot of speakers will operate with 10 watts and thrive- others will sound okay but not as good as they would with some headroom- in my opinion. Sounds like the Dali's are a good match for small tube amps- the Elacs may not be as an example.
Big picture, I think 10wpc will limit your speaker choices somewhat.
I have small tube monoblocks that are 8-10 wpc. If they were my primary power, it would limit my personal speaker choices to speakers that would thrive on that power. I have an Anthem Inegrated that is 225 wpc. I don't think I 'need' that much power, but it does keep my Ushers on their toes, and does great with Silverline Minuets.
I once ran B&W 801's with a 40 wpc Luxman. It was okay but the bass responded well with 200 wpc - and some use much more with those speakers.
gary
Big picture, I think 10wpc will limit your speaker choices somewhat.
I have small tube monoblocks that are 8-10 wpc. If they were my primary power, it would limit my personal speaker choices to speakers that would thrive on that power. I have an Anthem Inegrated that is 225 wpc. I don't think I 'need' that much power, but it does keep my Ushers on their toes, and does great with Silverline Minuets.
I once ran B&W 801's with a 40 wpc Luxman. It was okay but the bass responded well with 200 wpc - and some use much more with those speakers.
gary