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Preamplifiers — Kondo Audio Note Japan M7 Heritage

Description, images, technical data and specifications

Kondo Audio Note Japan M7 Heritage
Image source — © Kondo Audio Note Japan

The M7 Heritage is a preamplifier from Kondo Audio Note Japan, built with comprehensive connectivity including dual phono inputs and an extraordinarily wide bandwidth extending even further than the G-70i. The M7 Heritage brings Kondo's meticulous artisanal engineering to a comprehensive line-and-phono preamplification format.

Key specs that matter

One balanced XLR input and three single-ended RCA inputs plus two dedicated phono inputs are provided. Gain is 25dBu for line level or 63dB for phono. Input impedance is 47k ohms balanced, with output impedance at 20k ohms on both balanced and single-ended connections. Frequency response spans an extraordinary 10Hz to 280,000Hz within plus-or-minus 3dB - even wider than the G-70i's already remarkable bandwidth. Total harmonic distortion plus noise is 0.07%. At 438 x 160 x 330mm and 15kg, the M7 Heritage maintains a comprehensive preamplifier chassis.

Sound and use context

Expect the rich, meticulously engineered tonal character Kondo Audio Note Japan's artisanal tradition is broadly known for, with the extraordinarily wide 280kHz upper bandwidth figure and built-in phono capability covering vinyl playback directly.

Pairing

The built-in dual phono inputs cover vinyl playback directly without needing a separate outboard phono stage, and Kondo's own broader electronics catalogue offers natural companion components.

Alternatives

Kondo Audio Note Japan's own G-70i offers a line-stage-only alternative for buyers wanting a separate dedicated phono stage instead.

Specifications

  • Model name

    M7 Heritage

  • Analog inputs (balanced)

    1

  • Analog inputs (single-ended)

    3 + 2 (Phono)

  • Analog outputs (balanced)

    1

  • Analog outputs (single-ended)

    2

  • Gain (dBu)

    25 + 63 (Phono)

  • Input sensitivity (mV)

    N/A

  • Output voltage (V)

    N/A

  • Input impedance (balanced) (Ω)

    47 000

  • Input impedance (single-ended) (Ω)

    N/A

  • Output impedance (balanced) (Ω)

    20 000

  • Output impedance (single-ended) (Ω)

    20 000

  • Maximum output level (balanced) (dBu)

    N/A

  • Maximum output level (single-ended) (dBu)

    N/A

  • Volume control range (dBu)

    N/A

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

    10

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

    280 000

  • Signal to Noise Ratio (SNR, unweighted) (dB)

    N/A

  • Total Harmonic Distortion + Noise (THD+N) (%)

    0.07

  • Dimensions (mm)

    438 x 160 x 330

  • Weight (kg)

    15

  • Official link