I measured a different sample of the Naim NSC 222, serial number 519712, than that auditioned by Martin Colloms. Using my Audio Precision SYS2722 system,1 I performed a complete set of tests with the preamplifier connected to the NPX 300 power supply. (The NPX 300 was sitting on the floor, as far away from the preamplifier chassis as the two umbilical cables allowed.) I then repeated some of the tests with the NSC 222 powered by its internal supply.
I connected the Naim to my router with an Ethernet cable, and when I powered up the preamplifier, it asked to be paired with the remote control. After I did that, it asked which language, country, and time zone I preferred, then checked that its firmware was up to date. It was: The preamp was running v5.0.2.7936. The Roon app running on my iPad mini recognized three versions of the NSC 222: as a Roon Ready device; as a Chromecast streaming device; and as an AirPlay streaming device. I activated the Roon Ready version and used that, along with the Audio Precision’s optical and coaxial S/PDIF outputs, to
