The AC15 is the Eko Guitars acoustic guitar combo amplifier delivering 15W RMS of power through a 6.5" speaker. It features a guitar input, volume, bass, middle, and treble controls, and a headphone output that mutes the speaker when in use.

AC15 by Eko Guitars specifications

Output Power: 15W RMS
Speaker: 1 x 6.5” 8Ω
Dimensions: W 340 x H 325 x D 240 mm