Deutsch. Français. AMPS   Clean:   No Amp – This model has no preamp or power amp model.   Tube Instrument Preamp – This model was created to be a solution for plugging the output from an acoustic guitar’s piezo pickup or a bass. It can also deliver some tasty tones with a standard electric guitar. With the tone controls at 12 o’clock, the EQ is “flat.†  Line 6 Piezacoustic 2 – This one is designed to work with the piezo output of solidbody electrics that have one of tho