There are a two CA Series amplifier models; CA800 and CA1200 high end car audio amplifiers. The CA800 offers 4 channels of 60W RMS power and can be bridged to 400W over 2 channels. The CA1200 gives 2 channels at 120W RMS per channel, or when bridged can offer 800W into a single high powered channel. CA Series has full MOS-FET circuitry and uses high end acoustic grade components. The design also has a built in overload short and a thermal protection circuit to prevent from damage due to electrical shorts or overheating. There is also a remote “Turn-on�?function so that the amplifier automatically is powered on and off when the head unit is. Each amplifier has built in high pass, low pass, and bypass modes. When powering a subwoofer the low pass filter can be engaged. When powering the mid-bass and treble sections the high pass can be engaged. High pass and low pass filters have dials to adjust the filter frequency so that the optimum frequency range for each system can be dialed in. There is also an independent gain control to adjust for variations in input sensitivity and a 0-6-12dB bass attenuation switch. CA Series amplifiers are encased in a cast aluminum case finished in black with a red swans logo proudly displayed in the middle. The case is functional and was designed with heat dissipation in mind and gives high thermal transference. CA Series give surprisingly clean sound quality and a broad dynamic power output.