Aria AG-10X Guitar Amplifier. It is a compact combo solid-state practice amplifier featuring the following technical specifications and guitar-amplifier-are-detailed-below Control Panel FeaturesVolume: Standard control knob to adjust the overall loudness of the amplifier output.Treble: Part of a two-band equalizer used to shape the high-frequency presence and clarity of your tone.Bass: Equalizer knob used to adjust the low-end frequencies and low warmth.Phone: A standard 1/4" (6.35 mm) stereo output jack dedicated for headphones to enable silent practice.Power Switch & LED: A simple on/off rocker switch accompanied by a red power indicator light.