this weekend I am working on the PSU reimplementation.
After lots of thinking I end up with.
HT PSU - simple (R)CRCRC using high quality electrolyte aluminium capacitors (220uF; low ERS, high ripple current - e.g. EPCOS), bypassing them with polypropene (4,7uF; WIMA MKP4). Since ElCo-s are slower than polypropene and do not hanle high requencies well, I will use decoupled electrolytic capacitor technique - patented by Audio Research. See AR-LS22 schematic for realy good design. I like it very much.
LV PSU - simple C(R)C with LM317 regualtor (initialy low ripple configuration, later with slow start-up). This power could also be used as digital power supply (receivers, USB, XO-DAC).
Matej
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