The BDM21K-V6 is part of the Mono Amplifier range, the POWERBOX range is packed with features such as remote gain control, to make using the amps as simple as possible. The amplifiers also have extreme versatility the POWERBOX3000.1 and 5000.1 are extremely compact despite there massive power outputs due to their new internals this means that they can fit in more installs. Moreover, the POWERBOX pro series is packaged with an array of technology making them a suitable fit for any system. The amplifiers have the full range capabilities the amp can be used with both mids and subwoofers. Some important features include that the efficient class D architecture allows these amps to deliver maximum output with minimal power draw. The high quality internal mosfets process the digital input signal, amplifying it with minimal power draw and accuracy whilst remaining reliable. The dual input power and ground terminals have SPL and competition use this removes the need for dual input adaptors. The T BAR heat sinks provide efficient cooling and allow for increased performance and reliability for the mono amplifier range.