Integrated amplifiers — Musical Fidelity A1

The A1 is a legendary integrated amplifier from Musical Fidelity, one of the brand's most storied models, built with a dedicated MM/MC phono stage and switchable Direct/Normal gain modes. The A1 brings Musical Fidelity's considered engineering to a complete integrated chassis.

Key specs that matter

Five single-ended inputs plus a dedicated phono input are provided. Input impedance is 25,000 ohms, with output impedance at 100 ohms (pre-out). MM/MC phono current-sensing input impedance is 50,000 ohms for MM or 1,000 ohms for MC. Output power is a modest 25W into 8 ohms, reflecting the A1's legendary Class A operating philosophy prioritising tonal purity over raw output. Gain is switchable between 32dB (Direct Mode) and 42dB (Normal Mode). Frequency response spans 10Hz to 40,000Hz within plus-or-minus 3dB. Signal-to-noise ratio is 82dB. At 440 x 68.3 x 283.3mm and 10.5kg, the A1's considerable weight relative to its modest output reflects serious Class A heat-sinking and power-supply componentry.

Sound and use context

Expect the rich, harmonically pure character genuine Class A operation is broadly celebrated for, with the modest 25W output calling for efficient loudspeakers to reach satisfying volumes, consistent with the A1's legendary status among devotees of Class A amplification.

Pairing

The modest 25W output pairs best with efficient, high-sensitivity loudspeakers, and buyers should ensure adequate ventilation given the substantial heat generation inherent to Class A operation.

Alternatives

Musical Fidelity's own M6xi offers a considerably more powerful current alternative within the same broader integrated amplifier catalogue.