Finally got young the trying the o-port, and guess what? It doesn't fit in my guitar! I'm using a Simon and Patrick folk, with a cut-away, so the o-port just doesn't fit inside. Bugger.

My other acoustic is a yamaha which has an elliptical sound hole, so no chance there.

If anyone wants this one I'd gladly post it to you, if you cover the postage charge via a paypal gift, probably around £2 I'd guess. PM me if you want it.

Cheers,
Col
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Gibson The Paul '78 / Les Paul Smartwood / Godin Exit 22 / Simon & Patrick Folk CW / Hayden M.o.f.o