The compact A 70 SUB is made of sturdy MDF board finished with a combination of brushed aluminum and dark high gloss acrylic décor. Due to the design A 70 SUB can be used either as a front or a rear-firing subwoofer depending on the actual placement/application and your personal preferences.The massive high excursion 10” woofer enables the A 70 SUB to reproduce low frequencies in a very convincing way despite the very compact cabinet.The 450W are delivered by a digital amplifier which is much more efficient than conventional amplifiers - it simply produces more sound and less heat.The phase and frequency cut off adjustments allow flexible placing of the A 70 SUB and provide seamless integration with virtually any speaker choice and placement. The elegant blue illuminated volume control on the top of A 70 SUB enables quick and easy adjustment of the subwoofer level.