Arcam A25 + ST25 Streamer
Couldn't load pickup availability
Arcam A25 + ST25 Streamer
An Amplifier Talented in Every Area
The Arcam A25 features the company’s unique Class G amplifier for incredibly powerful and efficient sound. It’s also Arcam’s best-connected amplifier, with a wide range of inputs, including a USB-C interface that’s exclusive to the A25 model. The all-aluminium casing, paired with backlit aluminium dials, gives this amplifier the luxury aesthetic to match its premium sound quality.
Features
- ARCAM Class G amplification - for ultra-low distortion
- 100W per channel (8 ohms) - powers loudspeakers effortlessly.
- Bluetooth with aptX™ Adaptive Technology - for the best sound with the most convenience
- Specially selected components and materials - to deliver on sound quality
- Wired or Wireless Headphones - connect your headphones for quiet listening with, or without wires
- All new Radia design - Purposeful yet playful
- MM phono stage - ready for Turntables
- Hi-Res Digital Audio Inputs - with the addition of USB-C for ultra Hi-Res audio
- Plastic Free Packaging - for easy disposal of natural materials
Power and Control from the Class-G Amp
Drawing on over 45 years of experience in amplifiers, Arcam has set a new class standard for sound quality. The unique Class-G amplifier provides the A25 with generous power and incredibly low distortion. Delivering 100 watts per channel, it is Arcam’s most powerful Radia amplifier, ensuring deep, powerful bass and punchy sound, even in larger rooms and with low-efficiency speakers.
Perfectly Balanced Sound
Thanks to new components and materials, the sound quality of the A25 is cleaner and more precise, while still retaining the smooth and richly detailed sonic signature that has made Arcam so popular over the past decades. This balance of precision and warmth ensures an exceptional listening experience, regardless of the genre or source.
A Treat for Your Turntable
Much more than just a box-ticking exercise, the Arcam A25’s built-in phono stage makes a top-quality connection for your turntable. Suited to turntables with MM (Moving Magnet) cartridges, the high-spec phono stage extracts a deep seam of information from your vinyl, allowing you to hear subtle details from the music that might previously have been missed.
The Perfect Streamer for ARCAM Radia
The ARCAM ST25 is an ideal high-resolution audio upgrade for any Hi-Fi system, particularly when paired with the ARCAM Radia A25 amplifier. The ST25 includes a control link to integrate seamlessly with Radia amplifiers, allowing the two components to function as one unit. This combination enhances the listening experience by providing isolated components with their own power supplies for superior sound quality.
Advanced Audio Engineering
The ST25 is a state-of-the-art digital audio player designed and crafted in Cambridge, UK. It features an all-new digital audio and streaming platform, a linear toroidal power supply, a user-friendly interface, and a dedicated app. This combination ensures that the player delivers top-tier audio performance for the most discerning listeners.
Precision in Sound Quality
The ST25’s sound quality is achieved through meticulous engineering, incorporating a 6-layer digital audio and streaming platform. A ground plane runs through the entire board, reducing noise and interference, while advanced components like the Hyperstream iV DAC from ESS, in a balanced configuration, enhance sound precision with jitter elimination. The linear toroidal transformer power supply further reduces noise and improves overall efficiency, particularly when in standby mode.
High-Resolution Display and Easy Connectivity
A 6.5" high-resolution bonded display on the ST25 provides clear album artwork and metadata, easily visible from your seating area. The player supports a wide range of devices, including smartphones and tablets, and works seamlessly with popular streaming services. Connecting to your home network is straightforward with the ARCAM Radia App, enabling instant playback via Apple Airplay, Google Cast, Spotify Connect, Tidal Connect, and Roon.
A25 Integrated Amplifier Specifications
| Continuous Power Output: | |
| 2 channels driven, 20Hz - 20kHz, 8Ω: | 100W |
| 2 channels driven, 1kHz, 4Ω: | 165W |
| Harmonic Distortion: | 0.002% (80% power, 8Ω at 1kHz) |
| Analogue Inputs: | |
| Number of Inputs: | 3 (RCA pairs) |
| Signal/Noise Ratio: | 106dB (A-wtd, ref. 50W, 1V input) |
| Frequency Response: | 20Hz—20kHz ± 0.2dB |
| Phono (MM) Input: | |
| Input Impedance: | 47kΩ + 100pF |
| Frequency Response: | 20Hz—20kHz ± 1dB (ref. RIAA curve) |
| Digital Inputs: | |
| Supported Sample Rates (kHz): | USB-C: 384, 352.8, 192, 176.4, 96, 88.2, 48, 44.1 |
| Coaxial (RCA): 192, 176.4, 96, 88.2, 48, 44.1 | |
| Optical (Toslink): 192, 176.4, 96, 88.2, 48, 44.1 | |
| Supported DSD: | USB-C only: 1024, 512, 256, 128, 64 |
| Bit Depths (bit): | 32, 24, 16 |
| Frequency Response: | 20Hz—20kHz ± 0.2dB (filter 1) |
| Signal/Noise Ratio: | 110dB (A-wtd, ref. 50W, 0dBFS) |
| Headphone Output: | |
| Maximum Output Level (RMS): | 2.5V/5V (into 32Ω/300Ω) |
| Load Range: | 16Ω - 2kΩ |
| General: | |
| Mains Voltage: | 100V or 110–120V or 220–240V, 50–60Hz |
| Power Consumption (Maximum): | 500W |
| Power Consumption (Standby): | <0.5W |
| Dimensions (W x D x H): | 431 x 344 x 83mm (including speaker terminals and feet) |
| Weight (Net): | 9kg |
| Weight (Packed): | 12kg |
ST25 Streamer Specifications
| Works With (Apps) | ARCAM Radia, Spotify (Connect), Tidal (Connect), Roon |
| Works With (Services) | Apple Airplay, Google Cast |
| ARCAM Radia Supported Services (Global) | Internet Radio, Podcasts, UPnP, USB Media (using USB-A mass storage input) |
| Audio Section | |
| Supported Media | FLAC, WAV (LPCM), AAC, ALAC, AIFF, DSD (up to 256), MP3, MP4, OGG, WMA |
| Supported Bit Depth | 16, 24, 32 |
| Supported Sample Rates (kHz) | Up to 384 kHz |
| Gapless Playback | Yes |
| Digital Audio Outputs | 1x Coaxial (RCA), 1x Optical (Toslink) |
| Analogue Audio Outputs | 1x Stereo (RCA) pair |
| Wireless Specification | |
| Wi-Fi Network | IEEE 8002.11 a/b/g/n/ac/ax (2.4GHz/5GHz) |
| 2.4G Wi-Fi Transmitter Frequency Range and Power | 2400-2483.5 MHz (USA 11 Channels, Europe and Others 13 Channels) < 20dBm |
| 5G Wi-Fi Transmitter Frequency Range and Power | 5150-5250 MHz < 23dBm, 5250-5350 MHz & 5470-5725 MHz < 20dBm, 5725-5850 MHz < 14dBm |
| General | |
| Mains Voltage | 100V or 110–120V or 220–240V, 50–60Hz |
| Power Consumption | 15W |
| Power Consumption (Eco Standby) | < 0.5W |
| Dimensions W x D x H (Including Feet) | 432 x 329 x 99mm |
| Weight (Net) | 5 kg |
| Weight (Packed) | 7 kg |
Payment & Security
We value your privacy. Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.