Features 1、Built In High Sensitivity Tuner: The guitar preamplifier features a phase effect inversion function and a highly sensitive tuner for accurate tuning capabilities. 2、Simple and Compact Design: The for Presys Plus onboard preamp system is designed to provide optimal control, performance, and quality in a discreet and compact form. 3、Accurate Sound Control: The compact system includes volume, bass, mid, and treble controls, a phase switch, and a built in tuner with an LED display screen for easy tuning. 4、Convenient Installation: The guitar preamp also includes a pre wired for Sonicore pickup for no solder, plug and play installation, along with low battery indicator light, and a unique pivot design for easy access to the battery compartment. 5、Enhanced Sound Quality: The for Presys Plus preamp system is designed to deliver enhanced sound quality, ensuring clear, balanced, and dynamic tones that bring out the best in your guitar performance. Specification Item Type: Guitar Preamp EQ Equalizer Material: ABS Battery: 6F22 Battery x 1 [Battery not included] Package List 1 x Equalizer 4 x Screws 3 x Accessory 1 x Strap 1 x Manual