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6550 / KT88 Types

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  • Electro Harmonix 6550
    $29.95 Choose Options Electro Harmonix 6550
    Electro Harmonix 6550 - This is a great tube. Again, we are very conservative, having seen the "hot new tube" being to too cool. These have been tested in real-world conditions and they have proven to be a great tube, so you...
  • Electro Harmonix KT88
    $34.95 Electro Harmonix KT88
    Electro Harmonix KT88 - There were a few versions of this tube created before what's available now. I waited for the first few batches to go through... experience has taught me that many times the first couple of batches...
  • Gold Lion KT88
    $59.95 Choose Options Gold Lion KT88
    Gold Lion KT-88 - Russian re-issue of the legendary Genalex KT88. These guys rock... They've been working great in all applications we've tried them in, and haven't had a single complaint. Read web forums and you'll see tons...
  • PrimaLuna KT88
    $54.95 PrimaLuna KT88
    PrimaLuna KT88 - This tube is made in China and is very dependable, sounds great, and looks even better. This is the same tube that comes stock in the award-winning PrimaLuna amplifiers. Pricing above includes matching in...
  • Shuguang KT88
    $49.95 Shuguang KT88
    Shuguang KT88 GEC copy - This tube is made in China and is very dependable, sounds great, and looks even better. A little warmer in the mids compared to the Electro Harmonix, though the SED KT88 would be the warmest. These...
  • Svetlana 6550C
    $29.95 Svetlana 6550C
    Svetlana 6550C - New production tube made by New Sensor in Russia. Smooth liquid bass, very open & natural sound. These tubes sound good and are reliable, but please note they are NOT made by the Svetlana factory in St...
  • Svetlana SED "Winged C" 6550C
    $54.95 Svetlana SED "Winged C" 6550C
    These have been quite possibly the best 6550C/KT88 tube type in production.  But impossible to find in first-quality grade because the bulk of them were being bought by guitar-amp manufacturers.  This...
  • Tung-Sol 6550
    $38.95 Choose Options Tung-Sol 6550
    Tung-Sol 6550 - A current re-creation of the classic original 6550, now made in Russia. Super dependable, works well in most all applications. We burn them in for 72 hours, check for excessive current draw, all that good...
  • Tung-Sol KT120
    $49.95 Choose Options Tung-Sol KT120
    Tung-Sol KT120 - Super cool KT88 variant made by New Sensor in Russia. This tube is a drop-in replacement for KT88s... no special re-wiring required! The KT120 is rated to have a plate dissipation of 60W... compared with the...