1 Pt 10 months ago I have a 5120 and a jumbo acoustic electric. They are both wonderful guitars and I love the way they sound. I have been considering adding a piezo electric pickup to my Gretsch 5120. But what I would like is to use a blend pot and have ONE output jack that I can plug in to a combo guitar amp. Can this be done and sound good? A mix of piezo and magnetic pickups. No stereo jacks and only One output. Thanks.