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  1. Home >
  2. Hi-Fi >
  3. Hi-Fi Separates >
  4. Amplifiers >
  5. Stereo Amplifiers >
  6. Musical Fidelity B1xi Integrated Amplifier, Black

Musical Fidelity B1xi Integrated Amplifier, Black

  • Musical Fidelity B1xi Integrated Amplifier, Black
  • Musical Fidelity B1xi Integrated Amplifier, Black - Rear panel and connections
  • Musical Fidelity B1xi Integrated Amplifier, Black - High angled, internal view
  • Musical Fidelity B1xi Integrated Amplifier, Black - Birds-eye view, internal view
  • Musical Fidelity B1xi Integrated Amplifier, Black - Detail image, angle
  • Musical Fidelity B1xi Integrated Amplifier, Black - Detail image, angled view of front dial
  • Musical Fidelity B1xi Integrated Amplifier, Black - Detail image, focus on logo
  • Musical Fidelity B1xi Integrated Amplifier, Black - Detail image, focus on front panel controls
  • Musical Fidelity B1xi Integrated Amplifier, Black
  • Musical Fidelity B1xi Integrated Amplifier, Black - Rear panel and connections
  • Musical Fidelity B1xi Integrated Amplifier, Black - High angled, internal view
  • Musical Fidelity B1xi Integrated Amplifier, Black - Birds-eye view, internal view
  • Musical Fidelity B1xi Integrated Amplifier, Black - Detail image, angle
  • Musical Fidelity B1xi Integrated Amplifier, Black - Detail image, angled view of front dial
  • Musical Fidelity B1xi Integrated Amplifier, Black - Detail image, focus on logo
  • Musical Fidelity B1xi Integrated Amplifier, Black - Detail image, focus on front panel controls
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Key Features

  • Discrete Class A/B with 60W into 8 ohms
  • Isolated digital input boards feeding into an ESS9018 DAC
  • RCA, HDMI ARC, coaxial, optical, and Bluetooth 5.1 connectivity
  • Dedicated MM phono stage for direct turntable use
  • Variable RCA pre-out for sub or bi-amping

Musical Fidelity B1xi Integrated Amplifier, Black Overview

Musical Fidelity

View this description in German

The Musical Fidelity B1xi Integrated Amplifier builds on the legacy of the original 1990s B-series, prioritising sound quality and reliability over modern additions like screens, apps, or streaming, offering a more traditional, purist listening experience. It uses a fully discrete Class A/B design with a generously rated toroidal transformer to deliver 60W per channel into 8 ohms and 100W into 4 ohms, meaning you get clean and controlled power that's suitable for a wide range of real-world speakers. A separate preamp supply keeps background noise low and preserves signal clarity at all volumes.


When it comes to connecting your gear, you get a dedicated MM phono stage for direct turntable integration, three line-level RCA inputs, coaxial and optical digital inputs, HDMI ARC for linking your TV audio, and Bluetooth 5.1 for wireless playback. All digital sources are isolated on separate boards with their own linear power supplies, feeding into a carefully tuned ESS9018 DAC. You also get a variable RCA pre-out for subwoofer integration or bi-amping, solid metal controls on the front panel, and a full metal chassis that helps shield against unwanted interference.

Product Ref: 328864

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Full Description

EISA Best Product Award 2025-2026

Musical Fidelity B1xi

Best Value Integrated Amplifier

"Retaining the original’s Class AB topology, the new B1xi integrated amplifier is a modern interpretation of the 1980s icon."

View Full Description

What's in the Box?

  • Musical Fidelity B1xi Integrated Amplifier
  • IEC mains lead (10-amp type)
  • Remote control (B1 series)
  • 2 x AAA batteries
  • User manual

Specifications

Amplifier

Power, both channels driven @ 1% THD 60 Watts (8 ohms)

100W (4 ohms)

140W peak (2 ohms)
Power, both channels driven @ 0.09% THD (20Hz to 20kHz) 50W (8 ohms)

80W (4 ohms)
Voltage 21 Volts RMS, 20Hz to 20kHz; onset of clipping

30 bolts peak to peak
Current 8 Amps peak to peak
Damping factor 30
Output devices 1 pair per channel

Line Input

THD+N <0.02% typical, 20Hz to 20kHz
Signal/noise ratio >100dB 'A'-weighted
Input impedance 47k Ohms
Frequency response +0, -3dB, 10Hz to 30kHz

Phono Input

Sensitivity (nominal) 5mV (suitable for cartridges giving 1.5mV or more including high output
Signal/noise ratio >70dB ‘A’-weighted
Input impedance 47k Ohms
Input capacitance <100pF
Gain 42dB
Frequency response RIAA/IEC ±1dB, 20Hz to 20 kHz

Connections

Inputs 3 x pairs of line-level RCA inputs

MM phono

Optical, coaxial, ARC HDMI (digital inputs up to 24bit/192kHz stereo PCM)

Bluetooth 5.1
Outputs 1 x pair of line-level RCA preamp outputs for e.g. bi-amping

1 x pair of 4mm banana plug binding posts

Power requirements

Mains voltages 115/230VAC 50/60Hz (factory pre-set)

100VAC 50/60Hz (alternative)
Consumption 280 Watts maximums

General

Dimensions (W x D x H, including feet and terminals) 430 x 90 x 324 mm
Product weight 7.2 kg
Packaged weight 8.9 kg
Product code MFIB1XIAB
EAN 9120137900859

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