Luvay Piezo Pickup Contact Microphone Transducer for and Reusable Adhesive for Easy No Drilling or Power Supply Guitar, Ukulele, Violin, Mandolin,

The volume can be adjusted using the control knob. Suitable for most instruments: guitar, ukulele, violin, etc. Easy installation: Double-sided tape is attached around the sound hole, and the adhesive is reusable. Mini Size: Mini size design, includes 3m amplifier cable (standard connector 1/4" 6.35mm) and 4*adhesive. Excellent clear and crisp sound quality, noise reduction. Application method ① Pickup--Cable--amp (other mixer equipmet)  Application method ②  Pickup--Cable--sound card input port--computer audio input port (app needed) Volume adjustable with a control knob high fidelity, Good/ clear/ crisp sound quality, away from squeal feedback Easy to install, can be stuck with self-adhensive, 4 x stickers included, which can be reused No need to punch hole No battery needed Brass plating material plug, anti noise disturbance comes with 10 ft amplifie r cable (standard 1/4" connector) and 4 x stickers