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This is late-era Sonos kit, but the timing still matters because the ZP100 is an older ZonePlayer/amp from the pre-S2 era, so you’re buying it as a legacy streamer-amp rather than a current-platform piece. Against your comparable GBP market, £75 sits above the 75th percentile at £57, so it reads ambitious rather than fair, especially with condition marked unknown.
What keeps it interesting is the Sonos ecosystem value: these amps were well liked for reliable whole-home audio, tidy integration, and a compact all-in-one format that still suits secondary systems. If you specifically want a vintage Sonos zone amp and the seller can prove it powers up cleanly, that legacy appeal can justify a premium, but at this level I’d want confidence on function, firmware status, and whether any Sonos controller/app limitations matter for your setup.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.
Sonos emerged from Santa Barbara, California, in 2002 as Rincon Audio, Inc., founded by John MacFarlane, Craig Shelburne, Tom Cullen, and Trung Mai. MacFarlane's success with Software.com provided crucial seed funding for their audacious goal: a wireless multi-room music system free from the wires and complexity plaguing home audio at the time. Renamed Sonos in 2004, the company debuted its pioneering ZonePlayer and controller in 2005, cementing its roots in innovative, user-centric sound technology.
The brand specializes in wireless speakers, soundbars, and home theater systems designed for seamless multi-room playback and integration with streaming services. Sonos offers everything from portable Bluetooth options like the Roam to high-fidelity architectural speakers and subwoofers, alongside recent forays into headphones and whole-home audio solutions. Amplifiers, turntables, DACs, and cables fall outside their core focus, which prioritizes app-controlled ecosystems over traditional hi-fi components.
Sonos holds a commanding mid-to-premium position in the consumer audio market, renowned for inventing wireless HiFi and setting the standard for effortless, high-quality sound. Trusted by audiophiles and casual listeners alike, it blends accessibility with sonic excellence, dominating the smart speaker segment while appealing to discerning buyers seeking scalable, future-proof systems.
See all Sonos listings on RADAR.
