Fender Acoustasonic 15 &ndash; 15 Watt Acoustic Guitar Amplifier The Acoustasonic 15s convenient dual front-panel inputs include a standard  jack for an instrument and an XLR input for a microphone. Experience 15 watts of volume through a 6 Fender speaker specially designed for enhanced high-frequency response. Very portable and light weight for easy transport and conveniently has a headphone output for silent practice. Enjoy the peace of mind that this amp is backed by Fenders 5 Year Transferable Warranty.