LOL. It’s not that I “actively” shut down my hearing when concentrating! Yeah, I’d LOVE to hear someone talking to me as I do banking, texting or something that requires near total concentration.
I’m guessing that my ol’ gray cells simply can’t process TWO intense things at once: 1.) speech comprehension on a topic completely unrelated to what I’m doing and 2.) what I’m doing that requires a lot of concentration.
It’s frustrating and exhausting. And I’ve had equal measure of BOTH today while simultaneously doing a speaker phone call with family as I’m bangin’ out searches for VRBOs and ferries for a trip … that fell flat on its face after all that work. 
You’re ignoring this member’s posts.

I was rigid with extreme boredom, the Tutor as I recall had a very mundane voice, half the battle was staying awake! Back then, I had a system, paid for via “Access to Work”, I usually asked the Tutor to wear the FM mic prior to the course starting, they always obliged… But, on that occasion,I would have gladly done without any
I am thinking about the Roger On v2 Peter, Roger On v1 is very good, but the v2 is reputed to be very good in noise, one of the problems with the v1 I find is, it’s excellent as long as the background noise isn’t too loud, anything other, then I struggle! I saw the Roger On v2 on Connevans for around £650 today, if you sign the VAT waver… I will wait and see what like the new Phonak Naida Lumity is, in October/November before I decide… I hope the quiz went well 
All great fun, it’s very casual, and we won a packet of chocolate biscuits in the raffle 