It is possible that he is wearing internal ear defenders. There was a posting on here or UKWW about them six months or so ago. They can be imported from the US and cost , including delivery, about forty pounds. They stay in the ear all of the time and allow you to hear a normal conversation but "magically" close up to stop any loud noises penetrating through to the ear drum.CYC":1t23j0uk said:Looking at the GBWoodshop, I noticed Dave isn't using any ear defenders operating all his power tools. I was wondering if most of you are doing the same. Personally I use them all the time.