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Integrated amplifiers — McIntosh MA252

Description, images, technical data and specifications

McIntosh MA252
Image source — © McIntosh

The first hybrid integrated amplifier in the McIntosh catalog was the MA252. It is largely based on the classic MC275 tube, but it does not lose the advantages of transistor sound. The preamp part is based on two pairs of lamps — 12AX7a and 12AT7, the lamps themselves are covered with protective covers. The output stage is transistor, and outputs an amplifier of 100 watts per channel at 8 ohms or 160 watts per channel at 4 ohms.

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Specifications

  • Model name

    MA252

  • Type

    Integrated Amplifier with DAC and Phono

  • Analog inputs (balanced)

    1

  • Analog inputs (single-ended)

    2

  • Input sensitivity (mV)

    600 (XLR) + 300 (RCA)

  • Input impedance (balanced) (Ω)

    20 000

  • Input impedance (single-ended) (Ω)

    20 000

  • Output impedance (balanced) (Ω)

    N/A

  • Output impedance (single-ended) (Ω)

    N/A

  • D/A conversion

    Yes

  • Phono MM/MC current-sensing input impedance (Ω)

    N/A

  • Output power (8Ω) (W)

    100

  • Output power (4Ω) (W)

    160

  • Gain (dBu)

    N/A

  • Frequency response low +/- 3dB (Hz)

    10

  • Frequency response high +/- 3dB (Hz)

    100 000

  • Signal to Noise Ratio (dB)

    97

  • Total Harmonic Distortion + Noise (%)

    0.03

  • Damping factor

    >200

  • Dimensions (mm)

    305 x 194 x 419

  • Weight (kg)

    12.7

  • Official link

    https://www.mcintoshlabs.com/products/integrated-amplifiers/MA252

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