[sdiy] Switched-mode power supply module in synths... good or bad?

[Mattias Rickardsson]

Some PSU thoughts.

In order to minimize the size (and heat) of the JH Living Vocoder,
( http://www.jhaible.de/vocoder/living_vocoder.html )
I'm considering the possibility of using a switched-mode power supply
instead of a transformer. Something like these devices:

  http://www.tracopower.com/products/ac-dc-power-supplies/encapsulated-modules/

It would then probably be a +/-15 V supply, regulated down to +/-12 V
with the linear regulators on the Living Vocoder pcb in order to get
rid of the switch ripple. I expect the ripple (on the order of 100 mV)
would be way too strong to use directly. The supply would sit
physically very near the vocoder circuitry though, practically on the
free lab area in the corner of the pcb.

Can anybody recommend for or against such switching supplies with
analogue audio? Would it be a sensible idea at all, or would I regret
that I tried?

/mr