KT150-Based Integrated Tube Amplifier Doubles as Power Amp: Icon Audio Stereo 60 MkIV Features Big Output Transformers, Dynamic Sound, and Ultralinear/Triode Switching Ability

Size, style, sumptuous sound: Icon Audio's handmade Stereo 60 MkIV has it all, along with the boast of being the world's leading KT150 integrated ultralinear/triode tube amplifier. That's right: A simple flick of a switch takes this UK-designed unit from 85 watts in ultralinear mode to 50 watts of pure triode. Tailor-made for listeners that want a bigger, more robust integrated – and designed to present graceful music in hyper-detailed fashion and rocking fare sans harshness, tizz, or glare – it touts a big power supply, big output transformers, and dynamic, fast sound.

Icon's biggest and most powerful integrated amplifier, anchored by eight total tubes, Stereo 60 MkIV also serves as power amplifier. The ability to change its sensitivity via basic switch means you can opt between the component serving as an integrated remote-control amp or power amp fed via a separate preamplifier. Three potted transformers reduce transfer noise, and the presence of the four Tung-sol KT150s – with 50% more power than the KT88 – immediately yields improvements in sonics, power, and balances.

Like all Icon amps, Stereo 60 MkIV arrives entirely point-to-point hand-wired and contains no printed circuit boards or transistors, which degrade valve performance and color the signals. A cool built-in meter both adds to the classy, vintage look and serves multiple purposes, telling you when the output valves needs replacing as well as if they're operating at maximum potential. It's all in the service of ensuring that you're hearing music in the finest-possible sound. Along the same lines, the hand-wound low-distortion tertiary transformers reduce distortion and global feedback.

A Class A triode front end, record loop, remote control, Japanese Blue ALPS volume pot, tape monitor circuit, solid alloy front panel with polished dark-chrome alloy knobs, and gold-plated input and output terminals are also standard. Icon takes any worry out of the purchase by providing a two-year parts-and-labor warranty as well as full service and support for the lifetime of the product. Our 100% Music Direct Guarantee ensures your complete satisfaction.

Ultralinear or Triode?
For 60 years, audiophiles have argued which sound is better. With Stereo 60 MkIV, you have the choice of both 85 watts and 50 watts of pure triode tone at the flick of a switch. It's like having two amplifiers in one! Most hi-fi fans prefer the sound of triode valves, especially for acoustic music.