Features: A special guitar pedal designed for small concert and personal studio recording . Features a parametric equalizer that can be turned on/off by the footswitch. Low/ Mid/ High and Mid-Tone shift EQ-ing, wide adjustable tone. Balanced & unbalanced speaker simulation outputs are perfect for live performance or recording. 3.5mm PHONES jack for connecting speaker or headphone; 3.5mm AUX jack for connecting MP3/ smartphone to play accompaniment music. Specifications: Material: Aluminum Alloy Input Impedance: 500k Output Impedance: 10k Power Supply: DC 9V power adapter(center negative) or 9V battery (both are not included) Current Draw: