Class D amps are simple – just take an input ... but [George] found a home for it in the power section of an amplifier. The ATtiny is clocked at 16 MHz, making the ADC clock run at 1 MHz.

Guitar amplifier packed with features. It consists of a JFET based pre-amplifier, a Big Muff Pi a.k.a BMP based Tone control and an LM386 power amplifier. The dual JFET pre-amp provides tube-like ...