COMBO GUITAR AMPLIFIER Fly 3 Acoustic portable acoustic guitar amplifier. Control Shape. EQ (bass and reble). Digital echo effect. Auxiliary input for Cd or Mp3. Headphone output. External speaker output. 3 'speaker. Controls (Volume, Shape, Bass, Treble, Ech Level, Echo Time, MP3 / Line Input, Speaker Emulated Output, Input). Battery powered or optional power supply (Blackstar FLY3 Power Supply). Dimensions: 170 x 126 x 102mm. Weight: 0.9Kg.