World's First KT150 Integrated Ultralinear/Triode Hi-Fi Tube Amp Also Doubles as Power Amp: Icon Audio ST60 MKIIIm Features Massive Power Supply, Big Output Transformers, and Dynamic Sound
Size, style, sumptuous sound: Icon Audio's handmade ST60 MKIIIm has
it all, along with the boast of being the world's first KT150 integrated
ultralinear/triode hi-fi tube amplifier. That's right: A simple
flick of a switch takes this UK-designed unit from 80 watts in
ultralinear mode to 40 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.
As Icon's biggest integrated amplifier, the ST60 MKIIIm 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 KT150--with 50% more
power than the KT88--immediately yields improvements in sonics, power,
Like all Icon amps, the ST60 MKIIIm is 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 tertiary transformers reduce distortion and global feedback.
A Class A Triode front end, warm-up protection circuit, remote control,
tape monitor, chock power supply, .5" solid alloy front panel with
polished dark-chrome alloy knobs, plexiglas valve cover, 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. That's how
it should be, and while most competitors don't go to such extremes,
Icon is happy to do so.
Ultralinear or Triode? For 60 years, audiophiles have
argued which sound is better. With the
ST60 MKIIIm, you have the choice of both 80 watts and 40 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.
Icon Audio gear is engineered in the UK and manufactured in China, with
final assembly and checking done in the UK. Warranty on all Icon Audio
pieces is two-year, parts and labor. Tubes are warranted for one year on
a pro-rated basis.