Mi-Si acoustic trio mandolin preamp(8835)

Mi-Si acoustic trio mandolin preamp with Kremona pickup. Features an active, battery-free preamp designed specifically to work with Kremona piezo pickup for mandolin, built into a 1/4” carpenter jack. Mi-Si electronics is a revolutionary range of pick ups and preamps for retro fit into ukuleles, mandolins and guitars. They use energy efficient technology to produce a natural sound.