Arcam A50 Signature – Dual-Mono Class G Flagship Amplifier

The Arcam A50 Signature is the amplifier that marks 50 years of British hi-fi engineering, and it carries that weight in its architecture. Built as two fully independent mono amplifiers in one chassis, it pours commanding, low-distortion power into demanding loudspeakers while keeping every source — vinyl, CD, streaming or TV — sounding effortless and composed.

Key Features

• Fully dual-mono Class G: Each channel is a discrete amplifier with its own PCB, output stage, regulation and transformer windings for true stereo separation.
• 2 × 150W into 8Ω: Effortless headroom and grip, rising to 2 × 220W into 4Ω for difficult speaker loads.
• ESS Sabre ES9039Q2M DAC: Fully differential conversion with an ESS reference voltage regulator, up to 384kHz / 32-bit over USB-C.
• Class A MM/MC phono stage: A dedicated, fully integrated phono input for both moving magnet and moving coil cartridges.
• Wide digital and analogue I/O: HDMI eARC, USB-C, optical and coaxial S/PDIF, three RCA line inputs and a balanced XLR pair.
• Bluetooth 5.4 with Snapdragon Sound: High-resolution, low-latency wireless plus Auracast broadcast support.

Customer Benefits

The A50 Signature is built for listeners who want one component to anchor a high-end system for years. The dual-mono layout keeps left and right channels electrically isolated, so imaging stays precise and the soundstage stays wide even at high volume. Class G amplification delivers the dynamics of a big power amp without running hot or wasteful, and the built-in Class A phono stage and reference DAC mean turntables, CD players and computers all connect directly — no outboard boxes required.

Quick Specs

• Amplifier type: Dual-mono integrated amplifier (Class G)
• Power output: 2 × 150W (8Ω), 2 × 220W (4Ω)
• DAC: ESS ES9039Q2M, up to 384kHz / 32-bit (USB-C)
• Phono stage: Class A MM & MC
• Analogue inputs: 3 × RCA line, 1 × balanced XLR pair
• Digital inputs: HDMI eARC, USB-C, optical, coaxial S/PDIF
• Wireless: Bluetooth 5.4 with Snapdragon Sound & Auracast
• Signal-to-noise ratio: 106 dB (A-weighted, line)
• Dimensions: 43.1 × 34.4 × 9.9 cm
• Weight: 12 kg

What's in the Box

• Arcam A50 Signature integrated amplifier
• System remote control
• 2 × AAA batteries
• Mains power cable
• Quick Start Guide
• Important Safety Instructions

Use Cases / Ideal For

High-end stereo systems, demanding passive loudspeakers, vinyl playback via the onboard Class A phono stage, CD and computer audio, and TV sound via HDMI eARC.

Compatibility

Compatible with passive loudspeakers, MM and MC turntables, the Arcam CD25 and wider Radia range, televisions with HDMI eARC, computers via USB-C, and Bluetooth sources.

Pros & Cons

✅ Pros:

• True dual-mono construction for reference imaging and channel separation
• Huge, controlled power into difficult loudspeaker loads
• Built-in reference DAC and Class A MM/MC phono stage
• Comprehensive modern connectivity, including HDMI eARC and USB-C

⚠️ Cons:

• No onboard network streaming beyond Bluetooth
• Large, heavy chassis that needs proper shelf space and ventilation

As the 50th-anniversary flagship of the Radia line, the A50 Signature is an integrated amplifier built to be the last box you connect everything to.