Voltage range, high current peaks, noise or transient response are not a problem. Only parts availability is real problem. Details are one page below: R21 PS module
Good reminder to NOT put the transformer inside the case, which blissfully makes room for MOAR caps. I win!
Questions of PS influence on amplifier sound are here discussed mostly anecdotally. Another issue, as I see it, is that almost all regulated power supplies at diyAudio are presented without any measurement or simple ripple and noise value at best, thus making facts based comparison impossible. There are rare exceptions, most notable being legendary Linear Audio PS testing session, with detailed measurements and listening session. From that session, Jack Walton shared here some very interesting tidbits about transient response and PS rail harmonics. Most interesting is, that he was able to confirm listening test rank of power supplies by measuring their rail harmonics under load. So, one theory why different PS may change sound of an amplifier, is that different PS produce different rail harmonics under load and that is the cause of subtle sound signature change. The same may be true for using various boutique PS capacitors.
I have no conclusion on this, only questions. Here are comparative measurements on regulated PS and simple CRC.
CRC PS produces rail harmonics at several mV range while regulated remains at uV range. At 10 W, CRC produces 10 mV H2 harmonics and that is 59 dB below output signal. As there is some PSRR, I’m not sure this can affect amplifier sound. I believe that transient response is more important.
You do if you can reduce ripple to less than 10 uV.
The biggest winner will be capacitors vendor. 😀
I'm with you 100% - Transient response is the most important, because without correct transient response you cannot have correct tone.
Now see that's where you're wrong again: I have that vendor locked up in my basement.
Are those micro volts??
Attachments
No, I don’t. It’s a test point. Regulator can supply much more than 10 A.
What’s top speed of your car and what is average you drive at? 😉
Energy prices currently are peanuts compared to what they’ll be in the future.