ARCAM ST25: hi‑res streamer with 6.5” display and Radia platform (up to 32‑bit/384 kHz)

The ARCAM ST25 is a dedicated Radia-series streamer designed to upgrade any hi-fi system with a high-quality digital source, a modern interface, and high‑resolution streaming. As a separate component (rather than an all‑in‑one), the ST25 supports a more audiophile approach: a dedicated source with its own power supply and an optimized signal path aimed at reducing noise and preserving detail—while keeping the freedom to choose the amplifier that best matches your speakers.

Engineered in Cambridge, UK, the ST25 uses a new 6‑layer digital audio and streaming platform with a dedicated ground plane to minimize interference around sensitive audio circuitry. ARCAM pairs this with a new linear toroidal power supply design, focused on lowering noise and keeping the presentation clean, well-separated, and detailed. The result is a more “hi‑fi” streaming experience, with an organized soundstage and a sense of control and naturalness that shines on well-recorded music.

It’s also built for everyday use. The ST25 features a 6.5” high‑resolution front display for artwork and metadata, and the ARCAM Radia app for setup and control. Once connected to your network (Wi‑Fi), you can play instantly via Apple AirPlay, Google Cast, Spotify Connect, Tidal Connect, Qobuz Connect, and Roon Ready. For local libraries, it supports formats such as FLAC, WAV (LPCM), ALAC, AIFF, AAC and DSD up to 256, with playback up to 32‑bit/384 kHz and gapless playback.

A true digital upgrade for any system (especially ARCAM Radia)

The ST25 is designed as a high‑resolution upgrade for any hi-fi system, and ARCAM highlights it as an ideal match for Radia amplifiers (such as the A25) thanks to a control link that lets the two components behave as one from your device. This “separates” approach can bring clear benefits: reduced internal interference, dedicated power supplies, and more room to evolve your system over time.

Digital and analogue outputs: easy integration with DAC/amplifier

For connectivity, the ST25 provides coaxial and optical digital outputs to feed an external DAC or an amplifier with a built-in DAC, plus a stereo analogue RCA output for direct connection to an integrated amplifier. This gives you flexibility to choose the signal path that best fits your system.

ARCAM Portugal: explore more from the brand

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ARCAM Portugal at MestresDaMúsica

Technical specifications (specs) — ARCAM ST25

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At MestresDaMúsica in Viseu, we help you choose the right streamer for your system, integrate it with your amplifier/DAC, and get the most out of hi‑res streaming at home.

Source (manufacturer): ARCAM ST25 (official site)