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 Wyred4Sound ST-500 MKII Stereo Amp 


Wyred 4 Sound's ultra-high end ST-500 mkII and ST-1000 mkII amplifiers deliver all the refinements of our award-winning mAMP monoblocks with the convenience of one component. As with the mAMP, both the ST-500 mkII and ST-1000 mkII are built on the latest generation of ICEpower® technology and boast a 3rd generation input stage that produces smooth upper-mids and low and tight bass. With 14AWG OFC wiring direct soldered to gold plated 5-way binding posts, optimum power delivery and reference audio quality is guaranteed.


Whether using balanced or unbalanced inputs, the dual differential common mode converter ensures a perfectly balanced signal is fed to the power amp, while the quad FET buffer optimizes synergy between components. Ruggedly built yet exhibiting a smoothly toned industrial design, Wyred 4 Sound's STmkII series showcases unmatched value and performance.

Wyred4Sound ST-500 MKII Stereo Amp

  • STmkII Series Features

    • Utilizes latest generation (ASX2) ICEpower® audio technology
    • Up to 460wpc in 8Ω
    • External selectable mains voltage 115/230VAC
    • Idle power consumption 28w
    • Dual-mono design
    • Differential, fully-balanced
    • Thermal protection
    • Over current protection
    • Sound optimized soft clip
    • Robust construction
    • Standard 12V DC Trigger
    • Machined and anodized aluminum front panel
    • Gold Plated unbalanced (RCA) input
    • Neutrix Balanced (XLR) input
    • 3rd Generation fully balanced input stage with impedance of 92k
    • Covered by a 5 YEAR WARRANTY


    ST-500 mkII Stereo Amplifier Specs

    • Typical THD+N 8Ω (10W out): 0.001%
    • Power Output 8Ω @ 0.2% THD+N: 250W
    • 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
    • Dimensions: L 13.75"  W 15.75"  H 4.625" 
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