Amumu
Amumu NEO-SP30 Passive Neodymium Magnetic Soundhole Pickup for Acoustic Guitar
JUSTPRO
JUSTPRO Acoustic Guitar Pickup, Dual-System Active Pickup for Acoustic Guitar, Magnetic Rechargeable Sound-hole Guitar Pickup with Humbucker Microphone Volume Tune
PAGOW
PAGOW 2 Sets Acoustic Guitar Pickup, 3 in 1 Pickups Piezo Transducer, Microphone Contact Self-adhesive Mono Piezo Pickup with Buzzer for Electronic Acoustic Guitar Violin Ukulele