The ARCAM ST25 — Streaming, Refined in Cambridge
Some sources simply pass music along. The ARCAM ST25 was conceived to do something rarer: to make streamed music feel unmistakably present. Designed and engineered in Cambridge, the ARCAM ST25 is an all-new digital audio player built on an entirely new streaming platform, a new user interface and a new companion app — the most complete ARCAM streamer yet, and the natural high-resolution source for any serious hi-fi system.
Engineered Around Silence
Great streaming begins with what you cannot hear. Inside the ARCAM ST25, a six-layer digital audio board carries a continuous ground plane across the entire circuit, steering noise and interference away from the most sensitive audio stages. Conversion is handled by the latest ESS DAC architecture in a fully balanced configuration with advanced jitter elimination, so timing errors never blur the leading edge of a note. The result is a network audio streamer of unusual quietness — music emerging from a genuinely black background, with texture and space intact.
Power Delivered with Composure
Where most streaming products lean on switching supplies throughout, the ARCAM ST25 draws on a newly designed linear toroidal transformer to power the entire audio operation. A separate switching stage wakes only in standby, where efficiency matters and music does not. This quiet authority underpins everything the ARCAM streamer does: dynamics arrive unforced, and long late-evening sessions carry an ease that lesser sources rarely manage.
Every Service Within Reach
The ARCAM ST25 gathers the whole of modern streaming into one elegant source. Spotify Connect, Tidal Connect and Qobuz Connect are built in, alongside Apple AirPlay, Google Cast and full Roon Ready certification. The ARCAM Radia App handles Wi-Fi setup in moments and opens the door to internet radio, podcasts, music stored on a USB drive and libraries shared across your home network. Prefer a wired connection? An Ethernet socket sits ready on the rear panel. However your collection lives, this audiophile music streamer plays every note at up to 32-bit/384kHz — high-resolution playback without ceremony.
A Display Worth Looking At
Up front, a bonded 6.5-inch high-resolution screen presents album artwork and metadata with genuine presence — clearly legible from across the room, and a quiet pleasure to glance at between tracks. Four selectable DAC filters allow the presentation to be tailored by ear, from the default Linear Phase Apodizing character to gentler roll-off alternatives, each refined by the ARCAM engineering team.
Designed for the Radia System
The ARCAM Radia ST25 was voiced as the ideal partner for the ARCAM Radia A25 integrated amplifier, and the partnership runs deeper than sound alone. A dedicated control link allows streamer and amplifier to behave as a single instrument from your device — one app, one volume, one seamless experience — while separate chassis and independent power supplies preserve the sonic benefits of true component separation. For anyone assembling a modern British system of real pedigree, the pairing is quietly definitive.
Audition the ARCAM ST25 at Audio Lounge
A hifi streamer of this calibre deserves to be heard in person. Visit Audio Lounge on Wigmore Street to experience the ARCAM ST25 within a carefully matched system, or enquire with our team to arrange a demonstration tailored to your listening room.
About ARCAM
ARCAM has been engineering specialist hi-fi in Cambridge for five decades. Founded in 1976 as A&R Cambridge, the company built an early reputation on amplifiers of honest, musical character before shaping the digital age in earnest — first with the ARCAM Delta 70 CD player in 1986, then with the Delta Black Box of 1988, the world’s first separate DAC. That pioneering instinct runs unbroken through today’s Radia series, where the ARCAM ST25 continues a lineage of award-winning digital audio products designed to serve the music rather than the specification sheet. Explore the full range at [INTERNAL LINK: ARCAM brand page].