I have been listening to music with less than 10W amps for nearly ten years*, my speakers are under 90dB/W and I have regular ears, not hypersensible!!!
If your speakers are 85dB/W (that would be on the low side), you can produce 85dB with just one watt. Do you need much more than that??
I will always remember the first time I heard a Marshall guitar tube amp which was 50W against another 100W transistor watt amp. The tube amp sounded 100x louder. We don't listen to watts, we listen to decibels!!!
*OK, I confess I added lately an active sub-woofer to have bass move my pants when listening music that contains the lyrics "yeah baby"!!!!