Q350

Since I assume you will also be using your TV as a source, consider the Bluesound Powernode N331. It has HDMI eARC the unique capability of driving two or three channels, giving you the option of adding a center channel speaker, with enough power to drive any KEF speakers that would fit your built-i

Dont know about it, but i have some kefs q350 with x1700h denon, at first ordered some qed 14awg cables cause brand and shit, the result? Anemic sound, soundstage was okay but lacked impact Changed to some random 12awg cables and they feel like i upgraded my speakers, soundstage and that hmmpf impac

I think "max SPL" just means power handling before the speaker is damaged. Both speakers will have significant bass compression and distortion long before that point. Erin's Audio Corner does compression measurements, but he hasn't tested the Q350 or Q1. Here's the Q150:https://dl.dropboxusercontent