PROVIDES A PORTABLE PRACTICE TOOL - The lightweight Orange Amps Crush Mini offers full tonal control and 3.5mm Aux-In. You can plug an MP3 player in the Aux Input and jam along with the music. | OFFERS A BUILT-IN TUNER - The chromatic tuner helps adjust your guitar into the right pitch as you're playing. Perfect for solo practices! | HELPS SHAPE UP YOUR TONE - The Shape (Frequency) knob can fatten or scoop your sound while the Gain provides clean-to-heavy distortion. | PRACTICE WITHOUT DISTURBING OTHERS - You can connect the Samson SR350 Stereo Headphones in the headphone output for silent practicing. If you're free to make loud sounds, plug an 8 Ohm cabinet in the 1/4" Speaker Output. | INCLUDES - Orange Amps Crush Mini 3W Guitar Combo Amplifier (Black). Samson SR350 Closed-Back Stereo Headphones. Blucoil Power Supply with Slim AC/DC Adapter for 9 Volt DC 670mA with US Plug (Center Negative Polarity).