Musical Fidelity B1xi Integrated Stereo Amplifier - Black

Musical Fidelity B1xi Integrated Stereo Amplifier – Black

Feature Highlights

• 60W per channel Class A/B power – dynamic, tube-like sound with plenty of drive
• Versatile connectivity – MM phono stage, HDMI ARC, optical, coaxial & Bluetooth 5.1
• High-end DAC & preamp design – ESS9018 DAC with isolated digital boards for pure audio
• Premium build quality – robust all-metal chassis, oversized transformer & analogue volume control

The Musical Fidelity B1xi is a refined Class A/B integrated stereo amplifier that blends high-end engineering with everyday usability. With 60 watts per channel into 8 ohms, 100 watts into 4 ohms, and peaks of 140 watts into 2 ohms, it delivers ample drive and control for even demanding loudspeakers, offering a rich, dynamic sound reminiscent of tube amplification.

Designed for Pure Audiophile Performance

At the heart of the B1xi is a fully discrete Class A/B power stage and a generously rated toroidal transformer, ensuring wide dynamic range, low distortion, and effortless delivery of musical peaks. This means the amplifier handles complex passages and low-impedance dips with ease, while still sounding smooth and controlled at all volumes.

The preamp section features its own linear power supply, a rare choice in integrated amplifiers, which reduces noise and improves channel separation. Volume is controlled via a motor-driven analogue potentiometer, preserving signal purity compared to digital attenuators. The result is a transparent and highly musical presentation that lets recordings shine.

Vinyl, Digital & Streaming Flexibility

The B1xi caters to all sources. Vinyl enthusiasts benefit from a dedicated MM phono stage, carefully tuned for detail, low noise, and faithful reproduction. For digital playback, separate digital input boards keep RF interference away from the analogue stages. An ESS9018 DAC handles high-resolution formats up to 24-bit/192kHz via coaxial and optical inputs, ensuring clean and precise conversion.

With HDMI ARC, you can integrate your TV into a hi-fi system and enjoy film and concert soundtracks with true stereo depth. Bluetooth 5.1 makes it easy to stream wirelessly from smartphones or tablets, while a USB-C output provides isolated, low-noise power for an external streamer—future-proofing your setup without compromising the amplifier’s core design.

Build Quality & Longevity

True to Musical Fidelity’s heritage, the B1xi features all-metal construction, a solid aluminium front panel, and robust mechanical controls. Unlike many modern all-in-one devices that sacrifice durability for convenience, the B1xi avoids built-in Wi-Fi or apps—components that quickly date and compromise sound. Instead, the focus is on reliability, serviceability, and timeless sound quality.

Every circuit board, component, and layout has been meticulously engineered to minimise interference, maintain stability, and ensure the amplifier remains consistent over decades of use. This purist approach embodies Musical Fidelity’s philosophy: invest in the essentials—discrete circuits, oversized transformers, and meticulous design—to deliver music as the artist intended.

Key Features

• Discrete Class A/B design – 60W into 8Ω, 100W into 4Ω, 140W peak into 2Ω
• Oversized toroidal transformer – ensures power reserves and stability
• Dedicated low-noise preamp supply – with motor-driven analogue potentiometer
• MM phono stage – high-gain, low-noise design for vinyl playback
• ESS9018 DAC – supports up to 24-bit/192kHz from coaxial & optical inputs
• HDMI ARC – integrate TV audio into your hi-fi system
• Bluetooth 5.1 – reliable wireless streaming from mobile devices
• Variable RCA pre-out – for subwoofer integration or bi-amping
• USB-C isolated power output – clean 5V supply for external streamer
• Heavy-duty construction – all-metal chassis and extruded aluminium front panel
• No built-in Wi-Fi/App – ensures longevity and uncompromised performance
• Musical Fidelity B1xi  AMP Specs Sheet
• Musical Fidelity B1xi AMP User Manual

Technical Specifications

Amplifier

Line Input

Phono Input

Connections

Power requirements

General

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