Maximum anode dissipation is 25w and output power of single tube is over 10w in a1 amplification mode. Vacuum tube kt88, jj electronics antique electronic supply. Shuguang treasure kt88z vacuum tubes matched pair vacuum. Viva tubes thousands of vacuum tubes always tested. It has an international octal base indicated by the 3 in the part number and is found mainly in the final output stages of audio amplification circuits and was designed to be suitable as a series regulator by virtue of its high permissible voltage between heater and cathode and other parameters. They are extremely thick and rich sounding with no loss of high end like the chinese made kt88 s. Its a more wide open tube than the tungsol ri 6550. Co mb ines i n one volu me the con tent of th e bas ic book and suppleme nt s i thro ugh iv. Unbeatable prices on thousands of guaranteed vacuum tubes for sale, vintage nos hifi audio tubes, radio tubes, ham and industrial ready to ship. We carry premium hand selected vacuum tubes for guitar and hifi amps. Gotta replace power tubes in my cary monoblocks any suggestions. The el34 is a thermionic valve or vacuum tube of the power pentode type. Adaptor circuits in the back of this book may help.
The kt88 fits a standard eightpin octal socket and has similar pinout and applications as the 6l6 and el34. Kt88 s are not big bottled el34s, they are a different type of tube tetrode than el34 6ca7 pentode. Basically any amp using 6550s can use the jj kt88 s. On ebay, you can choose from a variety of affordable gec kt88 vacuum tubes with a range of features to suit your electrical equipment maintenance and operation needs. It has a sweet mid range that makes up for a tube that is generally intended for hifi. We carry brands like western electric, mullard, telefunken, sovtek, jj, electroharmonix, genalex and tungsol. Today, there are a number of quality kt88 tubes available for audio and guitar applications.
The kt88 audio tube is considered to be one of the best sounding power tubes for hifi tube audio amplifiers. Up for sale will be one matched pair 2pcs of shuguang treasure vacuum tubes kt88 z substitution of 6550, packed in environmental protection box as picture shown, product of shuguang electron group. I love and appreciate tube based audio gear and own sixteen pieces of tube gear between my two reference systems. Specifically designed for audio amplification, the kt88 has similar ratings to the american 6550 which was designed for use as a servo. Are kt88s interchangeable with el34s the gear page. The sed tubes in general i find a kind of lesser ges. This 1960 tube caddy below book also includes all tube numbers from all over the world. Tube depot carries a selection of 7199 pre amp vacuum tubes.
In general, the kt88 tube has a magical midrange similar to the smaller el34 tube, but with low and high end extremes that reach much further. Top american libraries canadian libraries universal library community texts project gutenberg biodiversity heritage library childrens library. The amps can run el34, 6l6gc, 5881, 350b, kt66, kt88, 6550, kt90 and more some tube choices require a 5u4gb rectifier tube fwiw, the kt88 is not my favorite output tube. The kt88 is a beam tetrode k inkless t etrode hence kt vacuum tube for audio amplification. Book depository books with free delivery worldwide. As a result, kt88 s and 6550s are produce cleaner tones and have low distortion, making it popular amongst bass amplifiers and high end audio applications. Electroharmonix kt88 vacuum tube high power kinklesstetrode for use in amplifiers such as the marshall major. Tubedepot carries a selection of 6550 kt88 kt90 power vacuum tubes. Free vacuum tube data sheets free vacuum tube substitution. General electric uks fabled lab and production plant began to scale back operations.
Kt88 vs el34 vs 6l6 substitution in vacuum tube amplifier. Buy heavensense kt88 6p3p preamp electron vacuum tube 6pin for kt88 gekt88 kt8898 kt100 cv5220 6550a98 audio amplifier tube replacement. Gerald weber describes this mod in his book tube amp talk for the guitarist and tech, in the chapter tweaking your. The kt88 is a beam tetrodekinkless tetrode hence kt vacuum tube for audio amplification. Kt88 is a low distortion, high output power tube developed specifically for audio. These are all pin compatable with one another, the only differences being the gain factor of each tube. Personally, i find the new sensor tungsol ri the best 6550 for guitar. New old stock mil spec pre amp compatible tubes from sylvania, ge and other various brands. For the first time ever a kt88 tube utilizes a solid, thick and completely unique graphite plate anode. The jj kt88 is an excellent choice for hifi stereo equipment as. When used in ab1 mode, two tubes can output over 35w. The kt120 and kt150 are both pentode devices and the kt88 and kt100 are described as beam tetrodes so no, i wouldnt think these can be easily interchanged even though the data sheets have the same pinout.
I have reliability issue w the reissue gold lion may be it was just for the first batch but i try not to throw money away again. You may find this inconvenient but i know of no way to interchange columns except to cut and paste one line at a time. This improves tube life and reliability on top of providing outstanding audio amplification characteristics. Vacuum tube kt88, electroharmonix antique electronic. What sonic characteristics could i expect with the different tube types. While not necessarily exactly the same, they will function as replacement items in your project. Gold lion kt88 made in england draft of new spec sheet 4302002 beam tetrode 63v indirectly heated the kt88 has an absolute maximum anode dissipation rating of 42w and is designed for use in the output stage of an a. Kt88 and kt120 power tube compatibility test, electrical performance. If your amp requires a kt88 tube for power these are a great replacement. Vacuum tube kt88, valve art octal power tube max plate watts 42w. Kt88 s generate a lot power, handling significantly more plate voltage than other power tubes. As a poster above said, the new sensor gec ri kt88 is a nice tube. Theshuguang treasure as a result of shuguangs 50year of expertise in vacuum valve design and production.
Th e composite tube s ubstitu tion g uid eboo k co n. Substitutes are given as a guide only please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. If you want to add some real thunder to your old ampeg svt then the jj kt88 s are the tube. Gotta replace power tubes in my cary monoblocks any.
Vacuum tubes for amps pre and power tubes tubes for amps. I have heard the gl 88s called the best, not in my book, they sound great, but so do my other tubes i have put. Riverstone audio vacuum tube pin straightener for 9pin b9abase 12ax7 el84 5670 and 7pin b7gbase 5654 6au6 6aq5a tubes hardened stainless hand held straightens vacuum tube pins. Without a thorough knowledge of tube types and their substitution possibilities, you may be overpaying for your new or nos tubes you employ, or just pick the wrong ones. Kt88 and kt120 power tube compatibility test, electrical. Both the kt66s and kt88s use the large diameter bases so if you have an amp that uses the bear trap style tube retainers that pinch the base of the tubes then. Im using shuguang treasure kt88 tubes for a few years now. Gec audio tube data by gec circuit designs code 2003 as demand for vacuum tubes waned inevitably in the 1970s due in large part to the advances in semiconductor technology. Vacuum tube kt88, jj electronics a sonically faithful reproduction. We have even run a quad of the kt88 s in a few evil twins and it is fat. Heavensense kt88 6p3p preamp electron vacuum tube 6pin for. You can use a european tube in a usa radio for example. Most amps using 6550s can also use the jj kt88 s for a different sound. Tungsol is the only brand that the kt120 is sold under.
The northern electric kt88 audio tube is made with the highest quality materials, from the. Kt88 quad vacuum tubes are highly soughtafter tubes with an amazing sound profile that will please even the pickiest of audiophiles. Tube crossreference european and 4 digit number to usa. Tubesforamps is your source for replacement vacuum tubes. Log in or request an account to access your account. Most of the datasheets are in pdf format and some are links to other html pages. The second section of the table lists usa types sorted in numerical and alphabetical order with usa type designations still in the second column. Discussion in audio hardware started by tlmusic, jan 5, 20. Free vacuum tube data sheets free vacuum tube substitution guide manuals free radio tube data manuals free tube base diagrams. We carry everything from nos rca 6l6gc black plates to jj 12ax7s. All these links open in a new browser window so that you can return quickly to this page without having to reload.
Kt77 vs kt88 talkin tubes the klipsch audio community. This ne w t ube s ub stitut io n guidebook tube substitution. The kt88 is known for its incredible clarity in the midrange frequencies. If you swap tubes in and out a great deal as in a tube tester or amp where you tube roll wear out this socket saver instead of your difficult to replace octal socket. Most of these datasheets are in english except where noted otherwise. This page lists several nice tube reference books, tube accessories, and pin cleaner, among other items. Octal power tube max plate watts 25w el34bwith shadow grid is a high performance improved version of pentode el34a to solve the problem of overheated no. What are some features of the gec kt88 vacuum tubes. However they share the same pinout and can be used in el34s applications if the rest of the circuit is designed to accomodate them. Due to the high current and power capability of these tubes, it is very important that the kt88 tubes are well matched. The features of the affordable gec kt88 vacuum tubes on ebay may include. Well built and will last over thousands of tube changes. Here youll find a modest collection of datasheets for some popular tubes. Gec audio tube data by gec circuit designs code 2003.
But the besthighest quality kt88 tubes should sound great in any aplication where kt88 are the choice. If you dont need 100w, the kt88 is a good substitute. The jj kt88 s also sound excellent in the hot rod 50, soldano amps. Two valves in class ab1 give a continuous output of up to 100w. The amps will also work with el34, 6550, kt88, or kt90 tubes. Kt 88 vs 6550 vs kt90 tubes canuck audio mart hifi and. Finally, the large size has extra room to fit the largest kt88, 6550, 2a3, and 5u4g st.