Hi joneci,
There is group for Duncan Amps PSU-II as well. You can find it here: https://groups.io/g/duncanampspsud
I used the software to simulate what voltages I can expect before I pull the trigger and actually buy a power transformer. Also, You don't need perfect ripple-free B+ for your output tube. As 6A3sUMMER notes, there are trade-offs: performance; simplicity/complexity; reliability; cost; etc.
I prefer the choke input filter power supplies in the Single-Ended amplifiers that I have built for a variety of reasons - chief one being that the sound was much livelier and engaging. No, I could not really measure any differences in THD or other things...
On the other hand, I tended to use cap input power supplies for the (push-pull amplifiers I built - still using a choke though. But as I noted earlier there are other options out there to regulate power supply.
Here is an article from 1957 in case you feel like reading up on choke input vs. cap input: http://www.r-type.org/articles/art-144.htm
There is group for Duncan Amps PSU-II as well. You can find it here: https://groups.io/g/duncanampspsud
I used the software to simulate what voltages I can expect before I pull the trigger and actually buy a power transformer. Also, You don't need perfect ripple-free B+ for your output tube. As 6A3sUMMER notes, there are trade-offs: performance; simplicity/complexity; reliability; cost; etc.
I prefer the choke input filter power supplies in the Single-Ended amplifiers that I have built for a variety of reasons - chief one being that the sound was much livelier and engaging. No, I could not really measure any differences in THD or other things...
On the other hand, I tended to use cap input power supplies for the (push-pull amplifiers I built - still using a choke though. But as I noted earlier there are other options out there to regulate power supply.
Here is an article from 1957 in case you feel like reading up on choke input vs. cap input: http://www.r-type.org/articles/art-144.htm