The neighbours are on holiday so I decided to stretch the legs of the Onkyo 9010 amp and Kef iq10 speakers. I picked some bass loaded tracks such as Billie Jean by Michael Jackson. The volume control only reached 11 o'clock position before the woofer started to flap around with the bass sounding distorted. The amp is 44W with the Kefs designed to handle 100W. It looks as though I have reached the sonic capabilities of the amp. The music source was Amazon Music streamed through Sonos Connect plugged into back of amp. Would an amp of more wattage give better control of the woofer?