Wyred 4 Sound ST-500 mkII Stereo Amplifier- Black In Black 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 re 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. Utilizes latest generation (ASX2) ICEpower audio technology Up to 460wpc in 4 External selectable mains voltage 115/230VAC Idle power consumption 28w Dual-mono design 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