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Sonnet is niche / premium brand set up by the engineer Cees Ruijtenberg when he parted ways from Metrum Acoustics for a while. The brand produced high performance gear at more affordable prices. These days Sonnet is part of Metrum stable.This streamer is currently configured as a certified Roon e...
Condition is unknown, but at A$1,000 this sits well below your A$850–A$5,347 comparable range’s median A$3,113 and just above the 25th percentile, so it reads as a strong-value buy rather than a stretch. For a Hermes Streamer, that’s enough discount to make it interesting even before you factor in the usual “used digital front end” savings versus new pricing.
The appeal here is the usual Sonnet Digital Audio upside: serious engineering, a reputation for very clean network-audio performance, and a product that tends to attract buyers who want refinement without chasing the latest box every year. If it’s complete and well-kept, this is the sort of listing that can be a tidy upgrade path or a smart hold for a dedicated streamer chain. Because condition is unspecified, I’d just confirm PSU, firmware, and included accessories before jumping.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Sonnet Digital Audio is a Dutch high-end audio brand founded by Cees Ruijtenberg, who came to the company after a long background in digital audio engineering and also had ties to Metrum Acoustics. Its present-day identity appears to have emerged around 2019, when Ruijtenberg launched Sonnet Digital Audio after the buy-out of Metrum’s DAC business.
The brand is best known for digital-to-analog converters and related digital hardware, especially its R2R and non-oversampling DAC designs such as the Morpheus and Pasithea. It also offers matching digital components and modules, but it is not known as a maker of speakers, turntables, headphones, or cables in the way broader hi-fi brands are.
In the market, Sonnet Digital Audio sits firmly in the boutique high-end segment. Its products are positioned as specialist, audiophile-focused converters built in the Netherlands, with pricing and distribution that place them above mass-market gear and aimed at buyers who prioritize technical refinement, low-volume craftsmanship, and a distinctive house sound.
See all Sonnet Digital Audio listings on RADAR.
