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Musical Fidelity M5xi Integrated Amplifier
$3,299.00
Product Details
Musical Fidelity M5xi Integrated Amplifier
The M5xi is a high-power integrated amplifier built around 2 independent monobloc power amps with a separate preamp stage in a shared chassis, sitting above the B1xi in the range. Its revised amplifier topology is drawn from Musical Fidelity's TITAN power amplifier design, bringing the M5xi closer to the architecture used in the M6si and M6xi, but tuned for lower output power. It delivers 160W per channel into 8 ohms and 240W per channel into 4 ohms, with 45A peak-to-peak current and enough headroom to drive demanding loudspeakers with control. Connectivity has been substantially updated, with HDMI eARC, coaxial, optical, and USB-C digital inputs, plus 4 line-level RCA inputs and an upgraded MM/MC phonostage. A home-theater bypass input lets the M5xi serve as the front left/right amplifier in a multichannel system, while fixed line outputs and variable preamp outputs support headphone amplifiers, bi-amping, or active subwoofer integration. As an authorized Musical Fidelity dealer in Toronto, Canada, Vinyl Sound can help you match this amplifier to your speakers and sources.
Key Features
- 2 independent monobloc power amps with a separate preamp stage in one chassis
- 160W/channel into 8Ω, 240W/channel into 4Ω, 45A peak-to-peak current
- Low-distortion Darlington output stage in classic Musical Fidelity fashion
- Redesigned MM/MC phonostage, adding moving-coil support over the prior M5si's MM-only stage
- Transformer and power supply PCB encapsulated in a metal enclosure to reduce EMI
- Physically separated digital/analog sections, digital and ARC boards on their own linear power supply
- HDMI eARC, coaxial, optical, and USB-C digital inputs, up to 24-bit/192kHz
- RS232 control for custom-install integration
- 5V/2A USB-A power output for a compatible external streamer
- Home-theater bypass input for use as a stereo power amp in a multichannel system
- Fixed line output and variable preamp output
- Front panel milled from a massive extruded aluminum profile
Fully Discrete Dual-Mono Power Amp
The M5xi is configured as 2 independent monobloc power amplifiers with a separate preamp stage — effectively a preamp and 2 power amps in one chassis. The amplifier stage uses Musical Fidelity's classic low-distortion output topology and incorporates technology from the company's TITAN amplifier platform, delivering the headroom and control needed for difficult speaker loads and low-impedance dips.
Modern Connectivity and System Integration
The M5xi adds HDMI eARC for TV and home-theater use, alongside coaxial, optical, and USB-C digital inputs supporting up to 24-bit/192kHz. RS232 control allows integration into custom-installed systems, and a 5V/2A USB-A power output provides clean power for a compatible external streamer. The home-theater bypass input bypasses the preamp stage entirely, letting the M5xi operate as a high-performance stereo power amplifier for the front left/right channels in a multichannel system, while fixed line outputs and variable preamp outputs add flexibility for headphone amplifiers, external power amps, or active subwoofers.
Redesigned Phonostage and Digital Separation
The built-in MM/MC phonostage has been redesigned from the M5si's MM-only stage, adding moving-coil cartridge support with improved circuit design, layout, isolation, and shielding. The transformer and power supply PCB are encapsulated in a metal enclosure to reduce electromagnetic interference throughout the amplifier, particularly benefiting the high-gain phonostage circuitry. Digital and analog sections are physically separated on dedicated PCBs, with the digital and ARC boards using their own linear power supply, reducing RF interference to protect the sensitive analog signal path.
Technical Specifications
| Power output (8Ω, 4Ω) | 160W, 240W |
| Continuous power (20Hz-20kHz, 0.09% THD) | 140W @ 8Ω, 210W @ 4Ω |
| Peak power (8Ω, 4Ω) | 190W, 320W |
| Output voltage | 36V RMS, 20Hz-20kHz at onset of clipping |
| Peak-to-peak voltage / current | 101V / 45A |
| Damping factor | 47 into 8Ω |
| Output devices | 2 pairs per channel |
| Line input THD+N | <0.009% typical, 20Hz-20kHz |
| Signal-to-noise ratio | >105dB A-weighted |
| Line input impedance | 40kΩ |
| Frequency response | +0, -0.1dB, 10Hz-20kHz |
| Analog inputs | 4x stereo RCA line-level, 1x MM/MC phono |
| Digital inputs | HDMI eARC, coaxial, optical, USB-C (up to 24-bit/192kHz) |
| Analog outputs | 1x fixed line output, 1x variable preamp output (stereo RCA) |
| Speaker outputs | 2 pairs, 4mm banana plugs |
| Control | RS232 D-sub, trigger input/output |
| USB power output | 5V/2A USB-A |
| Phono sensitivity (MM, MC) | 3mV, 0.4mV |
| Phono gain (MM, MC) | 40dB, 60dB |
| Phono S/N ratio | >87dB A-weighted |
| Phono input capacitance | 220pF |
| Phono input impedance (MM, MC) | 50kΩ, 1kΩ |
| Phono frequency response | RIAA/IEC ±0.4dB, 20Hz-20kHz |
| Mains voltage | 115/230VAC, 50/60Hz, factory pre-set |
| Power consumption | 320W maximum |
| Dimensions (W x H x D) | 440 x 125 x 405 mm (17.3" x 4.9" x 15.9") |
| Weight | 15 kg (33.1 lb) |
Frequently Asked Questions
Does this support moving-coil cartridges?
Yes, the redesigned phonostage supports both MM and MC cartridges (3mV/40dB gain for MM, 0.4mV/60dB gain for MC), unlike the prior M5si's MM-only stage.
Can I use this as a power amp in a home theater system?
Yes, the home-theater bypass input bypasses the preamp stage, letting the M5xi act as a dedicated stereo power amplifier for the front left/right channels in a multichannel setup.
How does this compare to the B1xi?
B1xi delivers 100W into 4 ohms with an MM-only phono stage and Bluetooth. M5xi steps up to a dual-mono design with 240W into 4 ohms, MM/MC phono, HDMI eARC, USB-C digital input, and home-theater bypass — built for a more demanding system.
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