The AMS 1000-2600 is a stereo Class D amplifier with a switching self contained power supply. This is the elder brother of the AMS 0100-2300 but doesn't have any impedance problems on low loads (at 2Ω is able to deliver 500W RMS per channel). This module can work in BTL mode with an output  power up to 900W RMS into 4Ω. Precise and clear sound, deep bass. No background noise.