Mini Plug n Play Guitar Amp Next Generation Features: • MP3 Input – Plug in your MP3 Player and play along with your favorite songs! • Clean - Overdrive Switch – Experience warm clean tones or switch to overdrive for a distorted kick ass rock n roll sound with amazing sustain that sounds like an old tube amp   • Headphone Jack – Private listening that won’t disturb others • Improved Durability – Now with heavy duty on/off switch, impact resistant enclosure, and durable ¼” RCA plug