Enter Simaudio's Moon 891 network player/preamplifier ($25,000; footnote 2). Also called a "streaming preamplifier"—Simaudio frequently struggles with how to clearly and succinctly brand its Moon products—it includes a DAC…
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Description: One-piece network player/D/A processor/analog preamplifier with phono stage, BRM-1 intelligent remote control, and built-in Moon damping base. Integration: Roon Ready, Apple AirPlay, Spotify Connect, Tidal Connect, local media servers. Streaming services: Qobuz, HighRes Audio, Deezer, and Tidal. Digital inputs: HDMI with ARC for TV, AES3, S/PDIF (2), optical (TosLink) (2); USB Audio, USB (type-A) host, network/RJ45 (2). DAC decodes PCM and MQA up to 32/384, upconverting 24-bit to 32-bit, and DSD up to DSD256. Analog inputs: two pairs line RCA (single…
Digital sources: dCS Vivaldi APEX D/A processor, Vivaldi Upsampler Plus, Vivaldi Master Clock; EMM Labs DV2 Integrated DAC, Meitner MA3 Integrated DAC; Innuos Statement Next-Gen Music Server and PhoenixNET network switch; Small Green Computer Sonore optical Module Deluxe with Broadcom/Avago AFBR-5718PZ 1GB SX-SFP, Gen 5 Fiber Optic module (2); Nordost QNet switch and QSource linear power supply (2); Sonore Audiophile Linear Power Supply; Synology 5-bay 1019+ NAS with Ferrum Hypsos linear/switching hybrid power supply; Linksys MR9000 mesh router and Arris…
I performed a full set of measurements on the Moon 891 using my Audio Precision SYS2722 system, repeating some of the testing with the magazine's higher-performance APx555 analyzer. For logistic reasons, I measured a different sample from that reviewed by JVS; mine had the serial number 310A22426340. Before I lifted the Moon onto the test bench, I unfastened the three transit bolts on its base—a good thing I read the startup guide before starting the testing! I installed Moon's MiND app on my iPad mini, which allows the 891's volume to be controlled but doesn't…
Amid all of this, there was…
Fig.1 Rega Naia speed stability.
All Rega turntables from the Planar 6 up come with an external power supply, and the Naia's is called the Reference Power Supply. Rega hand-adjusts each power supply to match the actual motor and turntable it will be paired with, so while there is a way to fine-tune the speed, I found that the Naia was set perfectly right out of the box (fig.1) with no additional tweaking required. The power supply lets you change the speed between 33 1/3rpm and 45rpm—there's no 78 speed—and turn the motor off. This is certainly a far cry from my own original Planar 3…