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ELECTROHARMONIX TUBES Electro-Harmonix - KT90 Tube CRYO (Matched Pr)


Electro-Harmonix - KT90 Tube CRYO (Matched Pr) AEHKT90

ELECTROHARMONIX TUBES Electro-Harmonix - KT90 Tube CRYO (Matched Pr)


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Item: AEHKT90
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Electro-Harmonix KT90 Vacuum Tube Features CryoAcoustic Treatment by Music Direct for Better Sound and Longer Life: Superb Linearity, Massive Power Handling, Ultra-High Reliability

Every tube lover has their favorites, but the Electro-Harmonix KT90 vacuum tube just may be the best KT90 type ever made given its superb linearity, massive power handling, and high reliability. KT90 is a beam power tetrode and can be used in place of both 6550s and KT88s. Its sound? Engaging and powerful, just like a big EL34. Sold in matched pairs. Comes with CryoAcoustic Treatment by Music Direct.

Music Direct CryoAcoustic Tube Treatment
Tubes have long been renowned for providing unparalleled audio experiences. But did you know you'll hear even better sound and enjoy longer tube life with our cryogenically treated tubes? The improvement is so profound, Music Direct no longer offers any tubes that are not cryogenically treated. We have invested in our own cryogenic machine, allowing us to do our own in-house testing with temperatures and ramp up/ramp down cycles to maximize the effects on the materials. Countless hours of listening tests have confirmed the advantages of CryoAcoustic Treatment.

The cryogenic process involves cooling materials to very low temperatures through the use of liquid nitrogen. Temperatures reach as low as -190 °C, and the process registers a profound impact on the mechanical properties of materials – particularly metals. Used in aerospace technology, medical tooling, musical instrument construction, critical automotive components, high-pressure cutting tools, and performance-critical sporting goods, cryogenics considerably improve the sonic presentation of vacuum tubes, cables, transformers, and other audio-related products – as well as their internal components. Resistance to corrosion, firmer hardening, and added strength are just a few of the scientifically proven effects of cryogenics. And while the sonic benefits cannot currently be scientifically proven, listening tests confirm an increase in acoustic resolution – which is why we call our process CryoAcoustic Treatment.


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