November 24, 2010

Class A Headphone Amplifier

Made this High Speed Class A headphone amplifier, based on a 1980 circuit published in Danish magazine 'High Fidelity'. Thanks to Max Jens Jensen for designing and fabricating the PCB.

Details: MU-metal around toroid, U860 diodes, ROE capacitors, BG Nx input caps, PRP and Mills resistors, Elna Silmic, ERO MKP 1837, gold plated signal wire, pure silver wire for PSU and output, Neutriks 1/4" jack socket, Galaxy enclosure.
More pictures.

November 13, 2010

Linear Power Supply for Squeezebox Touch

LM317 5v PSU for my Squeezebox Touch.
Built on the AudioSector generic PSU board (positive side).
2 x 9V transformer, ROE 4700uf, Siemens Sikorel, ERO MKP1837, Elna Silmic II, Dale resistors. Built in an old Camera PSU enclosure.