I purchased this on a flea market app some time ago. I used it for testing when I bought it, but haven't used it since. I'm selling it to declutter. If the noise is noticeable, replacing the button battery with a new one should fix it. ------------------- LR Baggs M1 Active active pickup, ivory color, with connecting cable. - Brand: LR Baggs - Model: M1 Active - Type: Active Pickup - Color: Ivory ------------------- Quoted from: Soundhouse ■ Pickup for acoustic guitar ■ Soundhole mounting type ■ Active type ■ Stack humbucker structure ■ Control: Volume ■ End pin jack, 1/4 inch (mini jack on the main unit) Cable: Approximately 50cm ■ Power supply: Button battery CR2032 ■ Battery life: Approximately 1,000 hours ■ Soundhole diameter: Compatible with 9-10cm * Expansion processing of the end pin hole is required Thank you for viewing.