Increase the volume without colored sound.
Built-in two-band EQ control high and low frequency separately.
True bypass.
Powered by AC adapter.
Mini and portable, enclosure is aluminum alloy shell.
LED indicator shows the working state.
Features:

Increase the volume without colored sound.Built-in two-band EQ control high and low frequency separately.True bypass.Powered by AC adapter.Mini and portable, enclosure is aluminum alloy shell.LED indicator shows the working state.Rubber pads on the backside is anti-skid, which enhances the stability and avoids friction between the effect pedal and the ground.
Specifications:

Brand: KOKKOModel: FBS2Main Material: Aluminum alloyInput Impedance: 1M OhmsOutput Impedance: 10K OhmsPower Supply: External AC adapter delivering 9V DC regulated minimum 300mAItem Size: 9.4 * 5.1 * 5.3cm / 3.7 * 2 * 2.1inItem Size: 179g / 6.3ozPackage Size: 10 * 7.5 * 6.2cm / 3.9 * 3 * 2.4in
 Package Weight: 218g / 7.7oz
Note:
Power Adapter is not included. 
 Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.