A Custom Aric Audio Systems 300B PSET completed for Parmenter Sound today and burning in! This amplifier features hand-made custom output and inter-stage transformers by Transcendar and no less than 4 toroidal transformers for the multiple supply voltages used in the amplifier. This amplifier produces beautiful 3D SET harmonics and has twice the power of your favorite 300B amplifier! Truly a stellar match with any speakers 90 db and higher, and downright scary volumes can be achieved with speakers 97 db and higher.