The Shop › A1G Active Piezo Pickup System Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 A1G Active Piezo Pickup System $149.99 The Double A1G features an active preamp, a flexible piezo undersaddle pickup element and recessed soudhole control module. Quantity: Add To Cart Added! The Double A1G features an active preamp, a flexible piezo undersaddle pickup element and recessed soudhole control module.