u/LittleHomieOnTheLeft

As the title says, what are good piezo‘s (and their resonant freq) and preamps so that I can run my cello through guitar pedals? I’m currently running a 15mm piezo into a 12:1 transformer into a Yamaha mixer then from the mixer into guitar pedals. The problem is it’s just so damn noisy. I think the noise floor of my piezo and transformer setup is too high because there’s a constant hum that’s driving me nuts. Any help would be appreciated.