ITEM NAME:Complete Kit EQ Pre-Amp plus Pickup for Acoustic Guitar 7545R-4 Bands plus A6V8 Complete Kit EQ Pre-Amp plus Pickup for Acoustic Guitar 7545R-4 Bands plus A6V8 Brand new, never used Under the saddle pickup for acoustic guitar Pre-wired for easy assembly 4 bands plus volume control This brand new EQ 7545R pick-up equalizer system with 4 bands can be easily fitted into your acoustic guitar and it is essential to electrify and amplify their sound. Presence Control: ±12dB at 8KHz Bass Control: ±12dB at 600Hz Middle Control: ±12dB at 600Hz Treble Control: ±12dB at 2.2KHz Input Impedance: 10MΩ Frequency Response: 20Hz - 20KHz Power: 9V alkaline battery Material: Rubber Package Included:1 x Pre-Amp plus pickup 1 x Connecting wire with 2.5mm plug 1 x Mounting base with sticker 4 x Mounting screws Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.