Now you can get custom effects from a tiny source that you plug directly into your guitar! Just plug your headphones into the JOYO JA-03 mini amp and youve got a cool sound, directly from your Bass amplified to your headphones. Walk around the house and practice wherever you want, all without disturbing anyone around you!Description:• MP3 Input Jack: 3.5mm• Earphone Input Jack: 3.5mm• LED Power Indicator• Material: ABS PlasticSpecifications:• Mini Amp size: 89(L)X77(W)X26(H)mm/ 3.4 x 1.6 x 0.8 inches• Mini Amp weight: 54g / 1.6oz• Package weig