Now, a popular AER bass amp! The Cube Bass is a three channel acoustic amp that will reproduce the sound of your instrument without compromise with full dynamic range. The amplifier features a 12" diaphragm driver and coaxial tweeter position and is powered with 400 watts, dynamic control, switching, sourcing and cascading power amps in a compact 40 cm 2 cube. The amp is built so that it has the power to get very low frequencies while being able to reproduce all frequency ranges authentically.