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In prior screeds, I have discussed the category of turntable designers I like to call deep thinkers, who twist their brains to come up with fresh thinking about how to approach the task of playing a vinyl record. If there is a poster boy for deep thinkers, it's got to be Simon Brown.

Brown is based on the South Island of New Zealand. I'm thinking that being in such a far-flung part of the world must have given his head plenty of space to get creative. First, in 2011 he created The Wand tonearm, a striking unipivot design that features a fat carbon-fiber…

A Visit to SME
It's no secret that I have long been a fan of SME turntables and tonearms. But despite having worked on, set up, or owned hundreds of their products over the last 40 years, I have never had an opportunity to visit the place where they are made. Until now.

Nestled in a sleepy village called Steyning in the south of England, SME still operates from the purpose-built factory they moved into more than 60 years ago (above), although it has been expanded several times.

What struck me first, as I approached the facility, is how the…

When was the last time I'd encountered a Plinius product? I found no talk of the 40-year-old New Zealand brand between a brief mention in a 2015 column by John Marks and 2022, when Robert Schryer spied a Plinius component at the Montréal Audio Fest. The most recent Stereophile review of a Plinius component was Erick Lichte's 2011 take on the SA-103…

We placed the amps on Grand Prix amplifier stands. In place of the RA-150's supplied two-piece height-adjustable feet, I used…

Description: Solid state, class-A/AB stereo/bridged mono power amplifier. Inputs: 1 pair single-ended (RCA), 1 pair balanced (XLR). Outputs: 2 pair loudspeaker binding posts. Rated output power, stereo: 150Wpc continuous into 8 ohms (21.8dBW), 250Wpc into 4 ohms (21dBW). Rated output power, mono: 450W continuous into 8 ohms (26.5dBW), 600W into 4 ohms (24.8dBW). Frequency response: 20Hz–20kHz, ±0.5dB, –3dB at 70kHz. Distortion: <0.03% THD at rated output power. Output current: 50A per channel for short durations, fuse protected. Input impedance: 47k ohms. Hum…

Digital sources: dCS Vivaldi Apex DAC, Vivaldi Upsampler Plus, Vivaldi Master Clock; Innuos Statement Next-Gen Music Server; Small Green Computer Sonore Deluxe opticalModule; Uptone Audio EtherRegen with SOtM sCLK-OCX10 Master Clock and sPS-500 power supply; Nordost QSource linear power supplies (2); HDPlex 300 linear power supply; Synology 5-bay 1019+ NAS powered by Ferrum Hypsos linear/switching hybrid power supply; Linksys mesh router and Arris modem; 2017 Apple iPad Pro, 2017 MacBook Pro laptop with 2.8GHz Intel i7, SSD, 16GB RAM.
Preamplifier: Dan…

I used my Audio Precision SYS2722 system for the testing. I performed complete sets of measurements on one of the Plinius A-150s that had been auditioned by JVS (serial number 8797) in both class-AB and class-A stereo modes. I then repeated the testing with the A-150 in bridged-mono mode. I preconditioned the A-150 in class-AB mode by following the CEA's recommendation of running it at one-eighth the specified power into 8 ohms for 30 minutes. At the end of that time, the temperature of the top panel was 90.7°F (32.6°C) and that of the side-mounted heatsinks 90.1°F…

Ikeda Sound Labs 9mono moving-coil cartridge: $4400
The Ikeda Sound Labs 9mono cartridge ($4400, above; footnote 1) is a dedicated mono design intended to integrate well into a modern stereo system. Within its curved body, made of solid aluminum alloy, is a low-output (0.22mV) moving-coil motor with a very low internal impedance (2.0 ohms). Generally, both specs mean fewer coil…

Rather than play familiar…

I concluded my September 2023 review of this tubed integrated amplifier by writing that the Audio Research I/50 "is the perfect amplifier for use in a relatively small room with a high-quality source and speakers, especially if the latter have a fairly high impedance. The I/50 has a touch of that 'tube magic' but without going whole hog, as so many of the current crop of tubed amplifiers do." The review sample just had balanced and single-ended line inputs and costs $5500, but toward the end of the review period I…