Quite a few builders of double top classicals and even double top steel string acoustic guitars are now putting an extra sound hole in the upper bout that blasts away directly at the ear of the player. Personally I dislike the feature to say the least because I have always tried to play to what...

I bought one after seeing many demos in my Facebook feed. It is an effects unit for acoustic guitar that allows you to play "unplugged" and get effects too. It's really nifty. Check it out.