Flatsons F1R Mini Headphone Guitar Amp Amplifier, Compact and Versatile Audio Amp for Musicians

headphone guitar amplifier with GAIN, TONE, and control. True analog circuit faithfully simulates response of amplifiers. AUX input jack lets you play along with your /MP3/smartphone. Classical gives you great high-gain sound. With 6.35mm plug and 3.5mm headphone jack, plug-and-play, easy to use.