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    Esoteric GRANDIOSO G1

    Esoteric GRANDIOSO G1

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    A truly three-demensional audio experience delights the listener with a real sense of depth and conveys the actual feel of the high ceiling of a concert hall. High-end audiophiles know the excitement felt at the moment the first sound shatters the silence the tense experience of impeccably tight focus, and the joy of music that feels so real you can almost touch it. After the last beautiful gradation of a lingering note has gently faded away and the system has concluded playback is when the true thrill of music really begins.

    The role of a high precision master clock is not to add something extra to you audio system. Rather, it is to attain the maximum performance from the system in order to convey music that is as close as possible to the original sound. The Grandioso G1 is the flagship model of master colck generator line, which combines all of our wisdom, tehcnology, and passion. It adopts a high precision rubidium oscillator with a frequency precision of ±0.05 ppb (parts per billion) or ±0.00005 ppm and new technologies such as "Wide Range Clock Buffer Amplifiers" and "Adaptive Zero Ground" circuits to attaing the very best in musical expression from your favorite audio system.


    Spec description

    Rubidium oscillator


    Frequency stability

    Within ±0.1ppb (–20°C to +65°C / –4°F to +149°F)

    Frequency precision

    Within ±0.05ppb ((when shipped new) (ppb=10–9)

    Warm-up time

    10 min. (Until oscillator stabilizes after power turned on)

    Clock outputs


    10MHz OUT (BNC)


    Output level

    Sine wave 0.5 ±0.1Vrms / 50Ω

    Master clock input


    EXT IN (BNC)


    Input frequency


    Rb + EXT 1pps mode

    1pps signal (GPS precision or better)

    Rb + 10M mode

    10MHz (GPS precision or better)

    Input level


    10MHz Sine wave

    0.5 to 1.0Vrms / 50Ω

    10MHz Square wave

    1.5 to 3.0Vp-p / 50Ω

    1pps signal

    Positive pulse, TTL level/10kΩ



    Power supply



    AC 230V, 50Hz


    AC 120V, 60Hz


    AC 220V, 60Hz

    External dimensions (W×H×D)

    445 × 132 × 448mm
    17-⅝" × 5-¼" × 17-¾" (including protrusions)


    23kg / 50-¾ lb

    Included accessories

    Power cord × 1
    Felt pads × 4
    Owner's manual × 1
    Warranty card × 1



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