Dragonfly Stethoscope Headphone Amplifier

The portable Dragonfly Stethoscope Headphone Amplifier needs no power supply to give busy musicians a convenient way to learn guitar or bass anywhere without disturbing others. Operates like a stethoscope to provide amplification direct from your guitar or bass guitar to your ears via the included headset. Mounts easily to the back of your instrument. Easy removal, too.