Arcam ST25 Streamer
Flagship Radia streamer with ESS Hyperstream IV DAC, linear power supply, and comprehensive support for high-res streaming services.
Product Overview
The Arcam ST25 from the Radia Series is a purpose-built high-resolution streamer designed to enhance separates‐based setups. It features a 6-layer board with a full ground plane to reduce noise, a Hyperstream IV balanced DAC from ESS, jitter control, and a linear toroidal transformer power supply. Up front, it has a 6.5-inch high-resolution bonded display for album artwork and metadata. It supports leading streaming services and features, including Apple AirPlay, Google Cast, Spotify Connect, Tidal & Qobuz Connect, and Roon Ready, while also streaming from USB, Internet Radio, UPnP, and podcasts. A control link allows tight integration with Radia amplifiers. Stylish, powerful, and engineered for purity.
Key Features
- ESS Hyperstream IV DAC; balanced signal path and advanced jitter elimination. :contentReference[oaicite:14]{index=14}
- Large 6.5-inch high-res display for album artwork & metadata. :contentReference[oaicite:15]{index=15}
- Linear toroidal transformer power supply. :contentReference[oaicite:16]{index=16}
- Supports up to 32-bit / 384 kHz PCM; DSD up to DSD256. :contentReference[oaicite:17]{index=17}
- Digital outputs: Coaxial & Optical. Analogue output: RCA stereo. :contentReference[oaicite:18]{index=18}
- WiFi dual-band (2.4 & 5 GHz), broad service/app support including Spotify, Tidal, Qobuz, AirPlay, Google Cast, Roon Ready. :contentReference[oaicite:19]{index=19}
- Low power consumption in use (~15 W), <0.5 W in standby. :contentReference[oaicite:20]{index=20}
- Dimensions 432 × 329 × 99 mm; net weight ~5 kg. :contentReference[oaicite:21]{index=21}
- Includes control link for Radia amps to seamlessly integrate operation. :contentReference[oaicite:22]{index=22}
- Plastic-free packaging. :contentReference[oaicite:23]{index=23}
Technical Specifications
| Streaming Services & Protocols | ARCAM Radia App; Spotify Connect; Tidal Connect; Qobuz Connect; Apple AirPlay; Google Cast; Roon Ready |
|---|---|
| Other Supported Services | Internet Radio; Podcasts; UPnP; USB Media (USB-A storage) |
| Supported Media Formats | FLAC, WAV (LPCM), AAC, ALAC, AIFF, DSD up to 256, MP3, MP4, OGG, WMA |
| Bit Depths | 16 / 24 / 32 bits |
| Sample Rates | Up to 384 kHz (PCM); DSD256 |
| Digital Outputs | 1 × Coaxial (RCA); 1 × Optical (Toslink) |
| Analogue Outputs | 1 × Stereo RCA pair |
| Wireless Networking | WiFi IEEE 802.11 a/b/g/n/ac/ax (2.4 & 5 GHz) via ARCAM Radia App |
| Power Consumption | ≈ 15 W in use; <0.5 W standby |
| Mains Voltage | 100 V or 110-120 V or 220-240 V, 50-60 Hz (region dependent) |
| Dimensions (W × D × H) | 432 × 329 × 99 mm |
| Weight (Net / Packed) | 5 kg / 7 kg |
