Some of the amplifiers which shipped with the KT88 power tube include the Hiwatt, Marshall Major, and some Ampeg models. Due to these characteristics, it is regularly used to replace 6550 tubes by end users seeking a guitar amplifier tone with less distortion. ![]() During assembly, DO NOT rotate the pull tube or the shaft of the motors. Historically, it has been far more popular with high fidelity stereo manufacturers than guitar amplifier builders, given its characteristics of high-power and low-distortion. Adjusting & Connecting the Head Spring Pull Tube. Due to its availability and characteristics, the KT88 is popular in hi-fi production amplifiers. NOS examples in good condition are extremely rare. ![]() Four KT88s installed and powered.Īs of 2022, KT88 valves are produced by New Sensor Corporation ( Genalex Gold Lion and Electro-Harmonix brands) in Saratov, Russia, JJ Electronic in Čadca, Slovakia and Hengyang Electronics ( Psvane brand) at former Guiguang factory in Foshan, China. by the MOV ( Marconi-Osram Valve) subsidiary of G.E.C, also labelled as IEC/Mullard, and, in the U.S., Genalex Gold Lion. The KT88 was introduced by GEC in 1956 as a larger variant of the KT66. The screen grid is sometimes tied to the anode so that it becomes effectively a triode with a lower maximum power output. The transmitting tubes TT21 and TT22 have almost identical transfer characteristics to KT88 but a different pinout, and by virtue of their anode being connected to the top cap have a higher plate voltage rating (1.25 kilovolt) and a higher power output capability of 200 watts in class AB1 push–pull. A KT88 push-pull pair in class AB1 fixed bias is capable of 100 watts of output with 2.5% total harmonic distortion or up to about 50W at low distortion in hi-fi applications. It is one of the largest tubes in its class and can handle significantly higher plate voltages than similar tubes, up to 800 volts. Specifically designed for audio amplification, the KT88 has higher plate power and voltage ratings than the American 6550. The KT88 fits a standard eight-pin octal socket and has similar pinout and applications as the 6L6 and E元4. Super Radiotron Valve Manual, Amalgamated Wireless Valve Co. Many of our Lifetime License options are exclusive offers, at the web's best prices.KT88 labelled G.E.C. You'll get a lifetime of major updates, and inevitably a world of new features that are beyond our current imagination. That's why a Lifetime License is so appealing. Perhaps it no longer works properly with your new computer or OS, or maybe you're simply missing out on serious improvements and experiencing some major FOMO. ![]() V2, V3, V4), older versions often grow obsolete. As you know, when an app gets a major update (and advances to the next version e.g. Minor updates usually include fixes to bugs that surface post-launch. Great question! A Standard License issues full access to the app and all minor updates for life. What's the Difference Between a Standard & Lifetime License?
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