ST mkII 600pix.jpg
ST mkII 600pix.jpg


from 1,249.00

7 - 10 Day Lead Time

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W4S products can only be shipped to Canadian locations

Our ultra-high end ST-500 mkII amplifier deliver all the refinements of our award-winning mAMP monoblocks with the convenience of one component. As with the mAMP, the ST-500 mkII is 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, our STmkII series showcases unmatched value and performance.

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" 
  • $1499.00USD