ARCAM Radia A50 Signature Dual-Mono Class G Integrated Amplifier

The ARCAM A50 Signature marks 50 years of ARCAM engineering with the company's first fully dual-mono Class G integrated amplifier. Each channel has its own amplifier circuitry and transformer windings, designed to keep music clean, spacious and controlled.

ARCAM A50 Signature: 50 years of amplifier expertise

A versatile choice for a premium stereo system combining vinyl, streaming and television audio. The CD25 is a natural disc-playing partner. The A50 Signature does not itself include network music streaming.

Key features

• 150 watts per channel into 8 ohms; 220 watts into 4 ohms
• Fully dual-mono Class G amplification for left/right channel separation
• ESS ES9039Q2M digital-to-analogue converter
• HDMI eARC/ARC and USB-C audio for TV and computer sources
• Balanced XLR and RCA analogue inputs; built-in MM/MC phono stage
• Two-way Bluetooth 5.4 with Snapdragon Sound and Auracast

Is the ARCAM A50 Signature right for your system?

Speak with the Kronos AV team about system matching, connectivity and installation. We can help you choose a source and loudspeaker combination suited to your room and listening priorities.

Product specifications checked against ARCAM's official A50 Signature product information. Please confirm current availability before ordering.

Technical Specifications – ARCAM A50 Signature

Specification details from the ARCAM Radia October 2026 dealer price list. Some advanced electrical measurements are not provided in that document; consult the latest ARCAM product sheet before installation.

What is special about the A50 Signature?

The anniversary A50 Signature is built around a dual-mono Class G architecture, with separate key left- and right-channel circuitry and power-supply elements. It combines premium stereo amplification with analogue and digital flexibility for a system designed around a variety of sources.

Why is the phono stage useful?

Its built-in moving-magnet and moving-coil phono stage supports a wider range of suitable cartridges than a basic MM-only input. The amplifier also provides balanced XLR and RCA connectivity, HDMI eARC and USB-C audio for compatible modern sources.

ARCAM A50 Signature – Frequently Asked Questions

Does the A50 Signature include a streamer?

No independent network music streaming is specified. A separate player such as the ST25 can provide music services.

Do I need an external phono stage?

Not necessarily: the integrated phono stage supports suitable MM and MC cartridges. Cartridge matching should be checked before purchase.

Our Advice at Kronos AV

We would compare the A50 Signature with the A25+ and SA45 based on your source equipment, phono requirements and whether built-in network streaming is important.

Our team can help confirm system compatibility, source connections and suitable loudspeakers before purchase.