Arcam Radia A25+ Integrated Amplifier
Arcam Radia A25+ Integrated Amplifier (2025) — the flagship Class-G stereo hub that unites true hi-fi power with modern convenience. Delivering 2×100W into 8Ω (165W/4Ω at 1 kHz) from Arcam’s 5th-gen Class G platform, the A25+ adds HDMI eARC for seamless TV audio, a USB-C input for computer and mobile hi-res playback up to 384 kHz/32-bit, and a dedicated ESS ES9018 DAC for ultra-low-noise digital performance. Wireless is next-level too: Bluetooth 5.4 with aptX Lossless, LE Audio, and Auracast makes it easy to share or listen privately with compatible headphones—no pairing needed. A carefully tuned MM phono stage and refined power supply design round out an amplifier that’s both quiet and authoritative, fronted by premium casework and an OLED display behind a precision glass panel.
Why it’s different: The A25+ isn’t just the A25 with a new badge. It brings HDMI eARC/ARC, raises input flexibility with USB-C at 384 kHz, moves to an ES9018 DAC topology, and upgrades filtering/power management for a cleaner noise floor—changes that you’ll hear as improved calmness, grip, and dynamic ease. If you want an integrated that works equally well for music and TV while staying firmly hi-fi, this is the Radia you buy.
Why Buy the Arcam Radia A25+
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Flagship Class-G power (2×100W) — Effortless control and low distortion from Arcam’s 5th-generation Class G platform for real hi-fi dynamics.
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HDMI eARC made simple — One cable from TV to amp for lip-sync-solid film, TV, and game audio through your main speakers.
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USB-C hi-res playback — Direct computer/mobile connection up to 32-bit/384 kHz without an external DAC.
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ESS ES9018 DAC inside — Dedicated SABRE conversion for cleaner, more detailed digital sources.
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Bluetooth 5.4 with aptX Lossless & Auracast — Stream in, transmit out, or share to multiple compatible headphones/speakers.
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Vinyl-ready MM phono stage — Quiet, accurate input with 47 kΩ/100 pF loading preserves your records’ tone and dynamics.
What It’s Great At:
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Music + TV in one system — HDMI eARC and auto-switching make the A25+ a true living-room centerpiece.
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Hi-res digital listening — USB-C up to 384 kHz/32-bit and precise filtering deliver clarity and depth from streaming or local files.
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Private and shared listening — Two-way Bluetooth plus Auracast enable late-night headphones or multi-listener audio without pairing hassles.
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Driving real speakers — 2×100W/8Ω with Class-G headroom keeps complex passages composed on towers or bookshelves.
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Vinyl enjoyment — The tuned MM input offers low noise and correct RIAA response for engaging analog playback.
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Clean, modern design — Premium chassis and OLED display (A25+) look at home in refined spaces while remaining easy to operate.
Everyday Usability (quick wins):
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TV auto-wake via eARC — Power on your TV and the A25+ follows, with volume controlled from the TV remote.
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Input-by-input optimization — Use USB-C for up to 384 kHz; optical/coax for up to 192 kHz to match each source’s best quality.
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Auracast sharing — Broadcast to multiple compatible headphones for family viewing or quiet late-night sessions.
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Quick vinyl setup — Plug MM turntables straight in; set the cartridge to 47 kΩ and enjoy.
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Headphone convenience — Front-panel jack for wired listening; Bluetooth transmit for wireless freedom.
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Future-friendly I/O — Three analog inputs, digital ins, pre-out, and HDMI eARC keep the system flexible as your gear evolves.
Arcam Radia A25+ Full Product Specifications
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Amplification
- Class: 5th-generation Class G
- Power (0.5% THD): 100W/ch into 8Ω (20Hz–20kHz); 165W/ch into 4Ω (1kHz)
- THD: 0.002% at 80% power, 8Ω, 1kHz
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DAC & Digital
- Chipset: ESS ES9018 (ES9018K2M)
- Sample rates: USB-C 44.1–384kHz; HDMI/Optical/Coaxial 44.1–192kHz
- Bit depths: 16/24/32-bit
- Digital S/N: 109dB (A-wtd, ref. 50W, 0dBFS)
- FR (filter 1): 20Hz–20kHz ±0.2dB
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Inputs & Connectivity
- Analogue: 3× RCA pairs (S/N 106dB A-wtd; FR 20Hz–20kHz ±0.2dB)
- Phono: MM; 47kΩ + 100pF; 20Hz–20kHz ±1dB
- Digital: HDMI eARC/ARC, USB-C, optical, coaxial
- Bluetooth 5.4: A2DP Sink/Source, AVRCP, BLE, LE Audio, Auracast; codecs SBC, AAC, aptX, aptX HD, aptX Lossless; TX <20dBm
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Headphone Output
- Max level (RMS): 2.5V into 32Ω / 5V into 300Ω
- Load range: 16Ω–2kΩ
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General
- Mains: 100V or 110–120V or 220–240V, 50–60Hz
- Power: Max 500W; Standby <0.5W
- Dimensions (W×D×H): 431 × 344 × 83mm (incl. terminals/feet)
- Weight: 9kg (net); 12kg (packed)
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Build & Accessories
- Aluminium front/top/sides/rear; solid aluminium dials
- Plastic-free packaging
- Included: mains lead(s), remote (2×AAA), Quick Start Guide, safety instructions
Arcam Radia A25+ Q&A:
- How much power does the A25+ deliver, and can it drive 4-ohm speakers?
- 100W/ch into 8Ω (20Hz–20kHz) and 165W/ch into 4Ω at 1kHz, suitable for a wide range of speakers.
- Which DAC is inside, and what resolutions are supported?
- ESS ES9018 (ES9018K2M); up to 32-bit/384kHz via USB-C and up to 192kHz via HDMI/optical/coaxial.
- Does it have HDMI for TV audio?
- Yes—built-in HDMI eARC/ARC provides direct TV connection and simple control.
- What phono cartridges are supported?
- Moving-magnet (MM) cartridges; 47kΩ + 100pF loading with 20Hz–20kHz ±1dB response.
- Which Bluetooth features and codecs are available?
- Bluetooth 5.4 with Snapdragon Sound, Auracast, LE Audio, and codecs including SBC, AAC, aptX, aptX HD, and aptX Lossless.
- Can I use wireless headphones without muting the speakers?
- Audio can be switched between speakers and Bluetooth headphones; they can’t be active at the same time.
- What are the dimensions and weight?
- 431 × 344 × 83mm (W×D×H), 9kg net.
- What’s included in the box?
- Mains lead(s), remote with 2×AAA batteries, Quick Start Guide, and safety instructions.
Arcam Radia A25+ Downloads
Arcam Radia A25+ User Manual
Arcam Radia A25+ Quick Start Guide
Arcam Radia A25+ Specification Sheet
Compare and Shop the Arcam Radia+ Collection
Compare Arcam Radia+ integrated amps - A5+, A15+, A25+. See power, HDMI eARC, USB-C, Bluetooth 5.4 with Auracast, and buying advice. Shop authorized at ListenUp.
