COMBO GUITAR AMPLIFIER JJN 3 Dark Green portable guitar amplifier, signature Jared James Nichols. 2 channels (Clean and Blues Power). ISF(Infinite Shape Feature). Digital delay. Auxiliary input for CD or Mp3. Headphone output. Output for external speaker. 3' speaker. Controls (Gain, Volume, Overdrive Switch, EQ (ISF), Delay Level, Delay Time, MP3/Line Input, Speaker Emulated Output, Input). Battery powered or power supply (Blackstar FLY3 Power Supply) optional. Dimensions: 170 x 126 x 102mm. Weight: 0.9Kg.