The AMS 0100-2300 is a stereo Class D amplifier with switching self contained power supplies. Despite the reduced power (2x25W RMS into 8Ω) its sound quality is of the highest level, with a deep bass and a good extension on the medium-high range reproduced with a typical sweetness of a class A amplifier. The board can still work in BTL achieving an output power of 120W RMS at 6Ω. The only limit is represented by the loads: in SE configuration the minimum impedance is 3Ω, while in BTL configuration, the minimum impedance is 6Ω. At lower loads, if you pump up the volume, the amplifier goes into clipping. Therefore, before choosing this amplifier, you should keep in mind the impedance of the speakers that are going to drive.