JJ KT88 Power Vacuum Tube (Matched)
Need matched power tubes? Don't worry! Price includes matching in any quantity you need for no extra charge. Need a matched pair? Just order "2" tubes. For a matched quad order "4" tubes. Matched sextets and octets are available as well.From our JJ KT88 vacuum tube listening test:
"The JJ KT88 power tube has the best imaging of all the tubes in this category. The bass is unique in that it compresses the very bottom end. This provides incredible bass response without ever losing control. Overall a great KT88 tube for orchestral, opera, and jazz music."
Other JJ Electronics tubes
KT88 Tube TypesAdditional Information and Downloads
Tube Matching Information:
Power Tube Matching FAQ
Perfect Pair System
Downloads:
JJ KT88 Datasheet (PDF)
Download Adobe Acrobat PDF reader
Warranty Information and Return Policy
Warranty Period: 3 monthsAll our tubes are guaranteed for 3 months from the date of purchase. (Any exceptions will be noted on that tube's Warranty tab)
If you receive a tube that does not perform to the manufacturer's specifications, please do the following:
- contact us to get a return authorization
- return it via regular mail within 90 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.
Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.
We can not accept returns that don't have an authorization, are past 3 month, or are returned improperly.
These guidelines may be updated without notice.
Ratings & Reviews
14 reviews
JJ KT88 | Great power tubes for any music
by John -
I bought a Quicksilver V120 pair of monoblocks about 20 years ago. 2 years ago I decided to get a new set of 8 JJ KT88 tubes. Not that the original quads sounded bad but I thought a new set was in order. To my ears all music sounds great thru them but especially women's voices and strings! They sound very smooth but when it's time to hear some Mahler or Bruckner brass, they excel at that as well. The reason I waited so long was that Mike at Quicksilver biases the tubes in my amps at 40 ma. They basically get very little electrical stress. Highly recommended!
JJ KT88 | Five out of five!
by V.
JJ KT88 are a lot better than the Tung Sol KT120 in my Rogue Audio S100. Sound is a lot more true to natural, extended dimensions in soundstage. Maybe matter that this is the only one not made in Russia or China.
JJ KT88 | Better than expected….
by Mendel
Test strong, so far JJ-KT88 are holding bias. After 6 hours, top end opening up somewhat, bass very good (better than Preferred KT88). Nice sounding tube, hope they last.
JJ KT88 | thetubestore.com is a good place to buy from.
by Matthew K
Solid tube, nice sound even for a relatively cheap tube. One of the JJ-KT88 tubes failed after around 50 hours of use though. Everyone gets a bad tube, or a few. It's normal for tubes. I gave a description of what happened with the bad tube and thetubestore quickly replied and offered an exchange or refund, no hassle.
Compared to more expensive tubes, it's not as good, but still solid. And I personally believe it's well worth it to spend more for better tubes. We spend thousands on amps, and then a hundred bucks on two tubes for them.. Which tube being used makes a big difference.
JJ KT88 | Very nice sound
by B
I put a set of these JJ-KT88 in my Jolida 502P to replace Tungsol 6550 a few weeks ago and what a difference (more musical throughout without being muddy in the low end). I love the sound of these JJ's. I definitely will not hesitate to buy them again.