NAPSC is for powering the logic and control circuits - these can be quite noisy, so big advantages when separately powered. To power the analogue audio circuits of the NAC202 you need either a Naim amp with a pre-amp supply inside, or better still, a dedicated power supply such as the Hicap. So the ideal power supply arrangement on a NAC202 would be a NAPSC for the logic circuits and a Hicap for the analogue audio circuitry. You could the take signal from the audio pre-outs on the Hicap to any power amp, Naim, or otherwise.
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