Great deals on used standard acoustic guitar pickups have arrived! Tested and confirmed to be in working order. The main unit and original box are included. Some of the included wiring clips have been used and are missing. This is a great deal, especially for those who were considering buying a new item! ------------------------------------------------------------------------------------------ The M80 is a magnetic pickup that captures the acoustic resonance of the body to an extent that you wouldn't expect, and it also has the ability to beautifully reproduce the sound of body tapping. Along with improvements to create a more realistic acoustic sound, the body tapping sound has been improved by approximately 200% compared to the M1. 3D Body Sensor The M80 features the same stacking humbucking structure as the M1. The upper coil has pole pieces for adjusting the volume of each string. The lower coil has a 3D structure that allows it to move freely up, down, left, and right. In addition to its humbucking function that suppresses noise, it is a groundbreaking system that successfully captures the resonance of the guitar's top and body efficiently as a 3D body sensor. By making the lower coil more flexible (moving up, down, left, right, forward, and backward), the acoustic characteristics have been improved by approximately 200% compared to the M1. This makes it the perfect pickup for players who want an even more airy, acoustic sound than the M1, including for tapping. Battery Checker The battery level can be checked using the battery checker button. Pressing the button illuminates four small green lights, indicating the remaining battery level. This new feature prioritizes convenience, allowing for easy battery level checks at your fingertips. Active/Passive Selector The unit has an Active/Passive switch on the back. When using an external preamp such as the Para Acoustic DI or Venue DI, you can select the Passive mode output according to your preference. Like the M1 Active, it uses a readily available 3V lithium button battery CR2032 (battery life: 1,000 hours of continuous use). *Please check before purchasing* This can be attached to acoustic guitars with a soundhole diameter of approximately 89mm or larger. Please be sure to check the size of your guitar's soundhole before purchasing.