The ALC2 is a combination of a speaker controller and power amplifier. The ALC units are designed to guarantee the best speaker drive, with maximum sound quality and operating reliability. The amplifier stage consists of a 2 x 1kW (RMS 2 ohms) Class G design, combined with a conventional power supply with large 210 Joule capacitor bank for dynamic and sustained high power output. The controller section consist of several stages. On the input stage the SDP circuit and on the output stage the SIS circuit ensure easy, reliable and optimised speaker response. The SDP circuit can be seen as the “brain” of the amplifier. By means of speaker-specific modules, that are located in 2 front-accessible slots, the characteristics of the connected speaker are loaded into the amplifier. With this, the amplifier is “tailor-made” to the speaker, regardless of the power output specifications of the amplifier. This can be done with either the analogue SDP modules, or the DDP digital drive processor™.