Hi all. I'm planning on putting two piezos in my current build - a 20 inch scale length plastic stringer, like the Kala electric ubass - with a blend pot and preamp. The piezos will be an undersaddle one and a disc in the neck pocket. Does anyone have any thoughts on whether I should put the blend pot after the amp and use a two channel preamp or if I should put the blend pot first and then just a single channel amp, or wouldn't it make a difference? For the sake of a bit of extra wiring I don't mind knocking up a two channel amp but I suppose it's got to be worth doing and I've only ever done piezo/magnetic combos so I've never considered it before. Any thoughts would be greatly appreciated. Andy.