EQ-7545R Piezo Pickup Acoustic Guitar Preamp Amplifier Equalizer Tuner Product Name: Guitar Equalizer ;Material: Plastic, Metal; Color: Black Presence Control: 12dB at 8KHz; Middle Control: 12dB at 600Hz ;Treble Control: 12dB at 2.2KHz Size: 10.2 x 4.5 x 6cm/ 4" x 1.8" x 2.4" (L*W*T) ;Bass Control: 12dB at 600Hz Weight: 132g;2.5mm Plug Cable Length: 35cm/ 13.8" ;Cable Length: 56cm/ 22" Package Content :1 x Preamp plus pickup ;1 x Connecting Wire with 2.5mm Plug