They even have the heat sink fins attached to the side of the plate just like the originals. Im getting to the stage where ill have to replace the kt88 output tubes on my amps antique sound lab hurricanes, 16 tubes in all. Direct heating cathode, medium power consumption triode is used for class a amplification. Electroharmonix kt88 vacuum tube high power kinklesstetrode for use in amplifiers such as the marshall. Kt88 beam power tetrode t he svetlana kt88 is a beam power tetrode having a large standard octal base and glass envelope. Vacuum tube 6550a, valve art antique electronic supply. Vacuum tube kt88, valve art octal power tube max plate watts 42w. Frank philipse pocnet mirror patrik schindler kt88.
Datasheet rs pro gzc81, thermionic valve base octal for 6550, 6ca7, 6p3p, 8pin vacuum tubes such as el34, kt88 rs stock no. The kt88 is also suitable for use as a series valve in a stabilised power supply. We have been working at sourcing a good quality kt88 tube for the past couple years. Rs pro gzc81, thermionic valve base octal for 6550, 6ca7. Valve art kt88 these are threehole, grey plate kt88s with a top getter and single side getter, positioned unusually at the bottom of the plate structure. The kt88 is a beam power valve with an anodeplate dissipation originally of around 35 watts, it is sometimes referred to as a pentode by some people, but in fact the clue is in the title kt which stands for kinkless tetrode the main feature differences in the kinkless tetrode compared to the pentode and early tetrodes was the use of two. With a goldplated molybdenum alloy grid and carbon coated screen grid, the svetlana kt88 is the finest power tube of its type be ing manufactured today. The kt88 is one of the few classic audio output valves. Valve art kt88 are ok tubes, but a my friend had a few run away so approach with caution. Id welcome any opinions on the various tubes out there.
From the 1970s kt66s lacked the internal carbon dust coating of the glass bulb. The kt88 audio tube is considered to be one of the best sounding power tubes for hifi tube audio amplifiers. The new valve art kt88 power output vacuum tube has just arrived these are an absolutley georgeous copy of the vintage nos gec genalux kt88. The kt66 is a very well known audio output beam tetrode valve. Valve art 6550a the valve art 6550a is a three hole, grey plate power tube with a single side getter positioned at the bottom of the plate structure, as was the case with the valve art kt88. The kt88 is a beam tetrodekinkless tetrode hence kt vacuum tube for audio amplification. This kt88 has excellent quality and for the price is one of the best kt88 in production today.
The figures given are for single ended use, but the valve is almost invariably used in push pull pairs. It produces a nice warm bass response with plenty of depth and detail. This is also a chinese tube by shuguang, but is reportedly made to specs of the genelex 88s. I am looking to buy a spare set of tubes for my sonic frontier power 3s. Click the menu of jacmusic,com for price information. It was so far ahead of anything else it was a joke. As of 2018, kt88 valves are produced by shuguang china, jj electronic.
Sv6550c 2001 and valve arts chinese 6550ca 2002 tion in their kt88 before it was sent out for. The kt88 tk is a beampower tetrode that shares similar applications as the 61. Svetlana technical data kt88 high performance audio. Looking for anyone who has used both or either of these types and your impressions. Also, just like the va kt88, this tube has a chromecolored collar with a brown base. Not clear to see through the glass but this valve is made with a glass disc not a pinch. The base is oversize compared to standard io bases. Octal valve retainer kt88 6550 valves sockets this is an octal tube retainer for kt88 6550 types. Jj kt88 are too bright and aggressive for my taste. Available types are 300b, 2a3, 6550, el34, 5u4g, and many, many more. Originally introduced by gec in 1 956, it became competition for the americanmade 6550, but with the ability to handle a. The preferred series kt88 construction features a solid plate design and triple getters.
The kt88 is a commercial version of the cv5220 and is similar to the. The svetlana kt88 is manufactured in the svetlana factory in st. The power dissipation of beam power tube kt8898 can deliver power of 42w. It is one of the largest tubes in its class and can handle significantly higher plate voltages than similar tubes, up to 800 volts. Our exhibit is a postwwii device, probably dating from the 1960s.
The el37 was of pinch construction whereas for the el34 mullard used the pressed glass foot construction employed on the b9a and b7g miniature valves for this io based device. 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. Its exclusive screengrid radiator fins reduce a major source of. Russian tubes sed winged c shuguang sovtek svetlana tad tube amp doctor. They are custom made for us in china by the shuguang factory. With an anode to anode load of 4,000 ohms and 550 volts on the anode a pair run in ultra linear ab1 will deliver 100 watts at 3. The jj electronic el84 is a solidly built el84 6bq5 with excellent tonal qualities. Unless the filaments have changed expect reliability problems. Kt88 s sovtek vs valve art audiogon discussion forum. It has fat low end and full mid tones with very good tone separation and a smooth, clean high end. Shuguang beijing vacuum tube datasheet analog metric limited. They do sound incredible and i think it is probably the best sounding kt88 ever made.
Two valves in class ab1 give a continuous output of up to 100w. I cant design and sell roadworthy amps if the owners cannot go find ready replacement valves. Compared to the regular 42 watts or even 35 watts on some more common kt88 data sheets that seems pretty high and really makes a big. Octal u f 6,3 v i f c a1,6 a typical characteristic. What you see pictured here, is the valve art kt88, which is a. The jj kt88 has been around now for a good 7 years and has an excellent reliability record. 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.
Valve art tubes are premium chinese tubes that are sorted to maintain a high level of quality. The sovteks and valve arts are the cheapest of the kt88 s. The el34 is a much loved audio power valve with an anode dissipation of 25 watts. The part that made the transmitter tubes, and some magnetron tubes was sold to mr. It is perfect for use with kt88, 6ca7, 6p3p, 8pin vacuum tubes such as el34 and 6550.
For a collection of datasheets, follow the link to at the top menu. The valve may be mounted horizontally only if pins 4 and 8 are in a vertical plane. Kt120 datasheet, kt120 pdf, kt120 data sheet, kt120 manual, kt120 pdf, kt120, datenblatt, electronics kt120, alldatasheet, free, datasheet, datasheets, data sheet. The kt88 has an anode dissipation o511 and is primarily designed for the output stage of an al amplifier for which two valves will provide up to 100 w output. Looking at the data sheet for the pentashuguangruby kt88vstr, the max anode dissipation is 50 watts. Specifically designed for audio amplification, the kt88 has similar ratings to the american 6550 which was designed for use as a servo amplifier. The new kt88 features greatly enhanced sonic performance. Tubes free delivery possible on eligible purchases. Their products are twice tested, and selected electrically and optically. Vacuum tube kt88, valve art antique electronic supply. Gotta replace power tubes in my cary monoblocks any.
Never heard full music kt88, but i heard so so comments about them at the price level. Most of the datasheets are in pdf format and some are links to other html. Super radiotron valve manual, amalgamated wireless valve co. If an output valve can deliver 10 watts into a load of 3000.
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. The classic envelope is 48 mm in diameter and, excluding the io base pins, is 100 mm tall. This is a set of 6 matched kt88 jj tesla specially selected for the ampeg svt. The kt88 has an absolute maximum anode dissipation rating of 42w and is designed for use in the output stage of an a. The kt88 fits a standard eightpin octal socket and has similar pinout and applications as the 6l6 and el34. Petersburg, russia, and is designed to be a direct replacement for any kt88, kt90, kt99 or 6550.
Increased peak cathode emission from new cathode materials. It is dedicated to be used in audio frequency range which requires the output power 100w. For the selection you pay a small premium, but for that you get what you expect, without having to say it. Known to be a very powerful 6v6 due to its robust construction. The el34 was the 1952 successor to the very successful el37 and both share a high value of mutual conductance 11.