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Wyred4Sound launch MKII ST-500 / ST-100 stereo amplifiers

  • Like the idea of Wyred4Sound’s mINT amps but averse to doubling up on power cables? Wyred4Sound have packed two mini amps (reviewed here and here) into a single chassis to bring you the ST-500 MKII – a dual mono power amplifier that nudges 250 wpc into 8Ω (430 wpc into 4Ω).

    Balanced (Neutrik) and (gold-plated) single-ended connections hold tight to the scene but you’ll save US$300 on the double mAMP config as the new ST-500 MKII power amplifier sells for US$1499. The ST also sports the new (“3rd generation”) input stage that already graces each mAMP.

    The message is simple according to Wyred4Sound’s marketing dude Clint Hartman: “The ST-500 mkII is two mAMPs in one chassis. Someone would buy the new ST to save money and reduce the number of components. Someone would buy the mAMP’s to gain absolute channel separation and the ability to place each amp in close proximity to the speaker it is driving.”

    Need even more go juice? For a hundred clams north of the twin mAMPs – that’s US$1999 – the ST-1000 MKII doubles down on the ICEPower for close to 460 wpc into 8Ω and 723 wpc into 4Ω (which should wake up the Magnepan owners).

    CRIKEY!

    Specifications are numerous…

    ST-500 MKII

    • Typical THD+N 8Ω (10W out): 0.001%
    • Power Output 8Ω @ 0.2% THD+N: 245W
    • Power Output 8Ω @ 1.0% THD+N: 277W
    • Power Output 4Ω @ 0.2% THD+N: 430W
    • Power Output 4Ω @ 1.0% THD+N: 460W
    • Output Idle Noise (A Wt.): <125µV
    • Frequency Response 20Hz-20kHz (8Ω @ 10W): ± 0.1db
    • Lower Bandwidth: 1.5Hz all loads
    • Balanced Input Impedance: 100kΩ
    • Unbalanced Input Impedance: 100kΩ
    • Dynamic Range (A Wt.): 111db
    • Gain: 30.5db
    • Sensitivity: 1.31V
    • Output Impedance: 0.018Ω
    • Min Load: 3Ω
    • Max Output Current: 30A
    • Idle Power Consumption: <28W
    • Standby Power Consumption: <0.5W

    ST-1000 MKII

    • Typical THD+N 8Ω (10W out): 0.001%
    • Power Output 8Ω @ 0.2% THD+N: 460W
    • Power Output 8Ω @ 1.0% THD+N: 480W
    • Power Output 4Ω @ 0.2% THD+N: 723W
    • Power Output 4Ω @ 1.0% THD+N: 775W
    • Output Idle Noise (A Wt.): <215µV
    • Frequency Response 20Hz-20kHz (8Ω @ 10W): ± 0.15db
    • Lower Bandwidth: 1.5Hz all loads
    • Balanced Input Impedance: 92kΩ
    • Unbalanced Input Impedance: 92kΩ
    • Dynamic Range (A Wt.): 108db
    • Gain: 30.7db
    • Sensitivity: 1.75V
    • Output Impedance: 0.021Ω
    • Min Load: 4Ω
    • Max Output Current: 30A
    • Idle Power Consumption: <28W
    • Standby Power Consumption: <0.5W

    All of Wyred4Sound’s amplifiers are built by hand in Atascadero, CA and are backed by a five year warranty.

    STREWTH!

    Further information: Wyred4Sound

    John Darko

    Written by John Darko

    John currently lives in Berlin where creates videos and podcasts and pens written pieces for Darko.Audio. He has also contributed to 6moons, TONEAudio, AudioStream and Stereophile.

    Darko.Audio is a member of EISA.

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