I've have the CPC offering, (see Julian Storey) On first try very poor mike performance.Checked on 'scope discovered 'phones shipped with wrong side of mike facing mouth!
Twisted it round,worked perfectly.
Of course this was after dismantling it down to mike insert,checking soldering etc etc.
No way of seeing this as mike has foam sock covering.
Now has custom white stripe on active side jic.
Been using it a few months now and at least as good as 'club' pool sets.
Sorry fisbangwallop,now you know why I was readability 3.
atceng