I will be powering a pair of B&W 802D3s with the new system. As far as speaker burn-in, along with system burn-in. I believe I needed at least 200 hrs. The results were dramatic, at least a 200% improvement.
Good luck with your audition! A word of advice, the new Luxman system should blow away the McIntosh system (as it should, almost 3X cost), so it is not a fair comparison. You should have some more fun and then compare Luxman to a system similarly priced. Let your ears be the judge!!