[Ynze] has built an audio amplifier that looks and sounds ... to drop his local 230V mains down to +25V and -25V. The amplifier circuit itself is simple – a few discrete components surround ...

The latest revision also changed to a different power amp that further reduced THD and led to an even better sound. The schematics are up on the Hackaday.io project page, but [Gavin] is also ...