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Musical Fidelity B1xi Integrated Amplifier
The Musical Fidelity B1xi is a fully integrated amplifier designed to deliver high-performance sound in a straightforward, durable, and versatile format. Drawing on the design principles of Musical Fidelity’s larger flagship amplifiers, the B1xi provides substantial power, low noise performance, and wide source compatibility in a compact chassis.
Built around a discrete Class A/B amplifier design, the B1xi is engineered to drive a wide range of loudspeakers with confidence. Its combination of analog, digital, phono, and Bluetooth inputs makes it well suited for modern hi-fi systems while maintaining a clear focus on sound quality and long-term reliability.
Features
- Fully discrete Class A/B integrated amplifier design
- High-current output capable of driving demanding loudspeakers
- MM phono stage for direct turntable connection
- Optical, coaxial, and HDMI ARC digital inputs
- Bluetooth 5.1 wireless input
- Three RCA line-level analog inputs
- Variable RCA pre-out for subwoofer connection or bi-amping
- Dedicated 5V USB-C output to power external streamers
- Motor-driven analog volume control
- All-metal chassis with solid aluminum front panel
Specifications
Amplifier Performance
- Output power (both channels driven @ 1% THD): 60 W per channel into 8 ohms; 100 W into 4 ohms; 140 W peaks into 2 ohms
- Output power (both channels driven @ 0.09% THD, 20 Hz – 20 kHz): 50 W per channel into 8 ohms; 80 W into 4 ohms
- Voltage: 21 V RMS (20 Hz – 20 kHz, onset of clipping)
- Current: 8 A peak to peak
- Damping factor: 30
- Output devices: 1 pair per channel
Line-Level Inputs
- Total harmonic distortion + noise: < 0.02% typical (20 Hz – 20 kHz)
- Signal-to-noise ratio: > 100 dB (A-weighted)
- Input impedance: 47 kOhms
- Frequency response: 10 Hz – 30 kHz (+0 / –3 dB)
Phono Input (MM)
- Sensitivity (nominal): 5 mV
- Signal-to-noise ratio: > 70 dB (A-weighted)
- Input impedance: 47 kOhms
- Input capacitance: < 100 pF
- Gain: 42 dB
- Frequency response: RIAA / IEC ±1 dB (20 Hz – 20 kHz)
Digital and Wireless Connectivity
- Digital inputs: Optical, coaxial, HDMI ARC (up to 24-bit / 192 kHz PCM)
- Bluetooth version: 5.1
Connections
- 3 × RCA line-level inputs
- MM phono input
- Preamp output: 1 × RCA pair
- Speaker outputs: 1 pair 4 mm binding posts
- USB-C output: 5 V power output for external streamers
Power and Consumption
- Mains voltage: 115 / 230 VAC, 50 / 60 Hz (factory preset)
- Alternative voltage: 100 VAC, 50 / 60 Hz
- Maximum power consumption: 280 W
Dimensions and Weight
- Dimensions: 430 × 90 × 324 mm (W × H × D, including feet and terminals)
- Net weight: 7.2 kg
- Shipping weight: 8.9 kg
What’s in the box
- Musical Fidelity B1xi integrated amplifier
- Power cable
Product Details
- Musical Fidelity B1XIB
-
Brand New : Factory Sealed
- EAN : 9120137900866
- EFLC : 15502
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Warranty
Two Year Warranty
- Parts and Labour Warranty
- Canada-wide Coverage
- Musical Fidelity Authorized
Returns
Easy Returns
- 14-day return window on eligible items
- Full refund issued in accordance with our return policy
About Musical Fidelity
Musical Fidelity focuses on sound-first products built for music and home theater listening, where clarity, balance, and real-world usability matter.
Explore our current Musical Fidelity selection and best sellers. We offer both new and open-box items, and everything is clearly marked. Popular categories include Audio System Components, Amplifiers & Receivers, Phono Preamps.
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