QSXPS - Regulated Power Supply Trivia: Photo taken with a Hasselblad camera with a digital backplane in 1996 (I think). Photographer unknown but used to work for www.elfa.se . This power supply design...

QSX04 Phono amplifier with passive RIAA equalization It's time for me to design a RIAA amp with passive RIAA correction. The name should be QSX-03 since this is the third amp. About the name The name...

QSX Mark III - The extreme phono (RIAA) amplifier Click on the picture to get a larger view. The printed circuit board of the QSX Mark III Amplifier. Interesting features In order to get an extremely...