Description: 【Versatile Three-Band EQ】: This acoustic guitar preamp equalizer features a three-band equalizer with adjustable LOW, MID, and HIGH frequencies, allowing you to fine-tune your sound for any performance setting 【Easy Installation】: Designed for folk guitars, this guitar equalizer pickup is installed through a side hole on the guitar, ensuring a secure fit and seamless integration with your instrument 【Direct Amplifier Connection】: This guitar EQ equalizer pickup allows you to connect directly to an amplifier for enhanced sound projection during live performances or practice sessions 【Easy Controls】: The pickup includes essential controls such as a volume knob and tuner switch, along with an LED display for tuning accuracy and a low battery indicator to ensure optimal performance at all times 【Battery Required】: Operates on 1x 6F22 9V battery (not included) Specification: Material: Metal PP   Size Chart: 83mmx62.5mm/3.27inchx2.46inch Package Includes: 1x Guitar EQ Equalizer Pickup Note: Please allow slightly errors due to manual measurement and different monitors.