Control presence :+/-12dB at 8KHz
Bass Control: +/-12dB at 600 Hz
Middle Control: +/-12dB at 600H
Frequency Response: 20Hz - 20KHz
Power: 9V alkaline battery
Product Description
Introduction:
Under the saddle pickup for acoustic guitar
Pre-wired for easy assembly 4 bands plus
volume control Supplied with a battery box, Low battery indicator.
Connecting wire with 2.5mm plug included
:
dimensions: 10.5 (L) x 4.7 (W) x 6 (H) cm (4 x 1.9 x 2.4inches)
Treble Control : +/- 12dB at 2.2KHz
Materials: plastic + electronic + copper

Package Includes:
1 x Pre-Amp plus pickup
1 x Connecting wire with 2.5mm plug
1 x 9 Volt battery
1 x Mounting base with sticker
4 x Mounting screws
1 x recording rod
2 x gasket
Note: Light reflection 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.