✔ Design with 3 knobs, Blend(Adjust the mix balance between the original sound and an acoustic guitar simulator),Tone(Adjust the tone),Volume(Adjust the volume)<br><br>✔ Intimate design with power indicator light, There is a tones,standby/on/ fx (switch:turns the power on or off.When the power is on,the indicatorwill light up.You can choose from two tones:ON(warm) or FX(bright)<br><br>✔ Use conveniently and simply, Connect directly to your guitar &amp; headphones without disturbing others near you<br><br>✔ 3.5mm AUX jack, Plug in your media player and play along to your favorite songs<br><br><br><strong>✔ Specifications:</strong><br>    Power Supply: Rechargeable battery (USB line included)<br>    Dimensions(W x D x H): 81 x 75 x 15.5 (mm)<br>    Weight: 52.3g(including 20g USB line)<br>    Working current:37mA<br>    Battery life:4.5 hours<br><br><br><strong>✔ Package Included:</strong><br>   1 x Mini Headphone amp<br>   1 x USB line