A Good Test for The B&W P7 Cans

[Dane Trethowan]

And if you don’t have a pair of these? Well too bad but I’m sure you’ll enjoy 
this all the same.
https://www.youtube.com/watch?v=rjnqHLd7YjE 
<https://www.youtube.com/watch?v=rjnqHLd7YjE>
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Those of a positive and enquiring frame of mind will leave the rest of the 
halfwits in this world behind.