Musical Fidelity B1 xi Integrated Amplifier - Black

Amplifier

• Fully discrete transistor-based Class A/B power amp design in the Musical Fidelity tradition
• Drives power hungry speakers with ease
• 60W @ 8 Ohm, 100W @ 4 Ohm, 140W @ 2 Ohm output power
• Power reserves for proper peak power delivery and wide dynamic range
• Pure sound quality instead of WiFi, fancy display, and app
• No WiFi, display, and App on purpose – Musical Fidelity invests in audiophile components, which decide the sound quality

Preamplifier

• Low noise design for best THD and signal integrity – at low as well as high levels
• High quality motor-driven analog potentiometer
• Pre-out for bi-amping or active subwoofer connection
• MM phono stage

Connections

• 3 pairs line level RCA connectors
• MM phono input
• Optical, coaxial, ARC digital inputs (up to 24bit / 192kHz stereo PCM)
• Bluetooth 5.1 input
• 1 pair line level RCA connectors, preamp outputs (e.g., for bi-amping)
• Speaker outputs 1 pair 4mm banana plug/binding posts

Digital

• Separate digital and ARC boards with their own linear PSU
• Up to 24bit / 192kHz Stereo PCM: 1x Coaxial, 1x optical, 1x ARC inputs
• Bluetooth 5.1 input

Power Supply

• Generously rated toroidal transformer
• Independent power supplies for preamp, power amp, and digital sections
• Output devices and power supply are generously rated to provide peaks even into difficult-to-drive speakers
• 5V USB C power output will power many new modern external streamers

Mechanical Construction

• Uncompromising metal work in the Musical Fidelity tradition
• Heavy-duty front panel milled from extruded aluminum profiles
• Clean, stunning, and sturdy metal exterior protects against electromagnetic interference

Amplifier

• Power, both channels driven @ 1% THD: 60 Watts per channel into 8 Ohms; 100W into 4 ohms; 140W peaks into 2 ohms
• Power, both channels driven @ 0.09% THD: 20Hz to 20 kHz: 50 Watts per channel into 8 Ohms; 80W into 4 ohms
• Voltage 21 Volts RMS, 20Hz to 20 kHz; onset of clipping
• 30 Volts 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 20 kHz
• Signal / noise ratio: > 100dB ‘A’-weighted
• Input impedance: 47k Ohms
• Frequency response: +0, –3dB, 10Hz to 30 kHz

Phono input

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

Power requirement

• Mains voltages 115 / 230 VAC 50 / 60Hz (factory pre-set):
• 100 VAC 50 / 60Hz (alternative)
• Power consumption: 280 Watts maximum

Physical

• Dimensions: 17" wide, 3.5" high (including feet), 12.75" deep (including terminals)
• Weight: 16 lb.