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ghost piezos

First, I bought a set of Fender-style piezos. They sounded fine, but once my bass had fallen over and a saddle got broken.
A year later I replaced my bridge with a two-piece one that required ABM-style piezos (they're smaller and less prone to break :)). The new set had two defective saddles (one had low output and other was too hot and was shutting off in it lowest position). I didn't contact GraphTech for numerous reasons (lot of time had gone since the receipt, postage would cost about as much as a new set, saddles required a little modification to fit the bridge etc.) and just ordered another set.
I didn't replace the whole set, just two defective saddles and they matched well, so It's probably just my bad luck that I had to order my saddles thrice.
The saddles have pretty high capacitive impedance, so you'll need a buffer with high input impedance (at least 5 MegaOhms) to reproduce the whole bass range. I highly recommend buying their Acousti-Phonic preamp. I didn't, so I had to assemble two preamps (one for magnetic PU, other for piezo) myself.
Sound is nice. Bright transparent highs, deep lows, rich, but somewhat tamed midrange - just what you'd get from about any piezo system.
 
yea im gonna get the acousti-phonic kit with it. dont nearly have the know-how to do that stuff myself. probably gonna get the midi hexpander too, did you go for that? is it any good? the videos make it seem very impressive. thanks for the info, seems promising.