Arcam Radia A25+ Integrated Amplifier

Details

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+

• Flagship Class-G power (2×100W) — Effortless control and low distortion from Arcam’s 5th-generation Class G platform for real hi-fi dynamics.
• HDMI eARC made simple — One cable from TV to amp for lip-sync-solid film, TV, and game audio through your main speakers.
• USB-C hi-res playback — Direct computer/mobile connection up to 32-bit/384 kHz without an external DAC.
• ESS ES9018 DAC inside — Dedicated SABRE conversion for cleaner, more detailed digital sources.
• Bluetooth 5.4 with aptX Lossless & Auracast — Stream in, transmit out, or share to multiple compatible headphones/speakers.
• 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:

• Music + TV in one system — HDMI eARC and auto-switching make the A25+ a true living-room centerpiece.
• Hi-res digital listening — USB-C up to 384 kHz/32-bit and precise filtering deliver clarity and depth from streaming or local files.
• Private and shared listening — Two-way Bluetooth plus Auracast enable late-night headphones or multi-listener audio without pairing hassles.
• Driving real speakers — 2×100W/8Ω with Class-G headroom keeps complex passages composed on towers or bookshelves.
• Vinyl enjoyment — The tuned MM input offers low noise and correct RIAA response for engaging analog playback.
• Clean, modern design — Premium chassis and OLED display (A25+) look at home in refined spaces while remaining easy to operate.

Everyday Usability (quick wins):

• TV auto-wake via eARC — Power on your TV and the A25+ follows, with volume controlled from the TV remote.
• 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.
• Auracast sharing — Broadcast to multiple compatible headphones for family viewing or quiet late-night sessions.
• Quick vinyl setup — Plug MM turntables straight in; set the cartridge to 47 kΩ and enjoy.
• Headphone convenience — Front-panel jack for wired listening; Bluetooth transmit for wireless freedom.
• 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

• 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
• 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
• 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
• Headphone Output
  • Max level (RMS): 2.5V into 32Ω / 5V into 300Ω
  • Load range: 16Ω–2kΩ
• 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)
• 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.