My SMPS have all of this.I Think Acca's smps that's what I need for beginning Not complicated, simple and cheap
MicrosiM - in audio i'm a little bit more experienced that in smps, my proposal is:
-unregulated ~ 300W power
- Output voltage to be changed by changing number of turns at the secondary side.
- PFC is not required, maybe we can focus on a good filter on the primary side ?
- +/-10% stability is for audio enough
- over current isn't a must, but good idea, more important is that te overvoltage protection works in 100%
- not heavy winding of the transformer(s)
- can't generate much heat - in amplifiers we have enough heat
Other technical details of the smps - I don't know, I'm not good at it
You ask - why not 1000W ? Because homemade amplifiers are most under 300W. Of course, if the 300W version will be stable, than more powerful one can be built.
-300W unregulated
-probably stable voltage
-overcurrent can be easily added,I explained in my theme
-voltage change by number of turns.
-over voltage is not needed,because smps works on max duty,and output voltage is max.
-it don't generate much heat.