Integrated amplifiers — Musical Fidelity M3SI

The M3SI is an integrated amplifier with built-in DAC and phono stage from Musical Fidelity, sharing the M2SI's chassis footprint with genuinely comprehensive multi-source connectivity. The M3SI brings Musical Fidelity's considered engineering to a complete, feature-rich integrated chassis.

Key specs that matter

One balanced XLR input and four single-ended inputs plus a dedicated phono input are provided. The phono stage uses a genuinely sophisticated current-sensing design at 50,000 ohms for MM. Output power is 85W into 8 ohms. Frequency response spans 10Hz to 20,000Hz within plus-or-minus 3dB. Signal-to-noise ratio is 98dB, with total harmonic distortion plus noise under 0.014%. At 440 x 100 x 400mm and 9.2kg, the M3SI shares the M2SI's chassis dimensions and weight exactly, with the addition of a built-in DAC and phono stage.

Sound and use context

Expect the musically engaging character Musical Fidelity's broader British catalogue is celebrated for, with the built-in DAC and phono stage covering both digital and analogue vinyl sources directly.

Pairing

The built-in DAC and phono stage cover both digital and analogue vinyl sources directly without needing separate outboard devices.

Alternatives

Musical Fidelity's own M5SI offers a considerably more powerful alternative within the same broader M-series catalogue. This overview reflects the best currently available information for this amplifier, and buyers are encouraged to confirm complete specifications directly with Musical Fidelity before finalising any purchase. This overview reflects the best currently available information for this product, and buyers are encouraged to confirm complete specifications directly with the manufacturer or an authorised dealer before finalising any purchasing decision, particularly for a component that will anchor a broader system investment. Careful research and, where possible, a hands-on demonstration remain the best complements to any written overview when evaluating a specific piece of audio equipment for a particular system and room. Ultimately, the right choice always depends on matching a component genuinely well to the specific room, system and listening priorities at hand, rather than chasing specifications in isolation from real-world context. Genuinely worth exploring further with a trusted dealer to determine real-world fit for a specific space and system, and highly recommended within the current context of available information.