The AC-40 acoustic amplifier is developed on the basis of the popular AC-20. While retaining the high sound quality, it is more powerful, more portable due to its built-in battery and therefore a great choice for outdoor performances. Its 40W (RMS) power can easily meet the requirements for small live shows and can be used as long as 3 hours continuously when fully charged. Based on the AC-20’s DSP circuit, it delivers the same sonic clarity and will satisfy your amplifier demands without a doubt.