surdopickups

low-impedance pickups are the real alternative to noise

all the piezo need the preamp;
due to the high impedance of the piezo sensors, the preamplifier is needed to improve sound quality.

since a person builds pickups, whatever he says is viewed with suspicion or as a form of hidden advertising of its products.I'm sorry but mine was just a comment.

I recommend magnetic pickups whit very low impedance

interesting
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