I have been working on this project for years and I think that it is finished. Here is a Schematic of one Channel and a populated board showing the layout. It is typically designed for a 12V, 5A wall wart current limited power supply. It has low noise and low distortion but it has not been measured. It has 2 gain options of 3x and 24x through 2 RCA inputs. One channel oscillates near 300 Khz while the other channel oscillates near 250 Khz. The output stage features low crossover distortion because of its zero dead time design. It consumes about 2 Watts of standby power because of the bias in the output stage. The discrete nature of the design allows a hobbyist to use better op-amps and bigger output Mosfets and different dead times to change the noise level and the distortion level of the amplifier. The purpose of the design was to get low distortion power while using no heat sinks. Eighteen Watts of power per channel is relatively small in the class D world but that makes it affordable and 18W of power can be quite loud when applied to efficient speakers.
