Bassist Trip Wamsley presents the Gallien-Krueger PLEX Preamp pedeal, a 4-band active preamp/EQ pedal for bass. Smooth out your sound using the PLEX's built-in compressor. Maintain your intonation with the PLEX's chromatic tuner. Make your weak bass signal pop with the PLEX's boost function. A direct XLR out lets you plug straight into a console or PA.