KT88 is a low distortion, high output power tube developed specifically for audio. Today, there are a number of quality KT88 tubes available for audio and guitar applications. Due to the high current and power capability of these tubes, it is very important that the KT88 tubes are well matched. We stock KT88 tube sets that are precision matched on our own custom equipment and hand selected by our staff for the best results.
KT90, KT120 and KT150 are higher-powered direct replacement of KT88. In most cases you can use these tubes in place of KT88, but it's best to check with your amp manufacturer first. KT88 is upwards compatible with 6550 tubes. You can use KT88 in place of 6550 in most cases.
Scroll down to see sets of 2 (pair), 4 (quad), and 6 (sextet). Please inquire if you don't see the sets you want. Our KT88 sets are burned-in for 24 hours for maximum stability, then precision matched. There is no extra fees for burn-in or matching.
- Electro-Harmonix KT88 Matched Pair$64.90
- Svetlana KT88 Matched PairOut of stock
- JJ/Tesla KT88 Matched PairOut of stock
- Mullard KT88 Matched Pair$87.00
- Electro-Harmonix KT90 Matched Pair$89.50
- TungSol KT120 Matched Pair$94.00
- Genalex KT88 Gold Lion Matched Pair$115.00
- TungSol KT150 Matched Pair$188.00
- Electro-Harmonix KT88 Matched Quad$129.80
- Svetlana KT88 Matched QuadOut of stock
- JJ/Tesla KT88 Matched QuadOut of stock
- Mullard KT88 Matched QuadOut of stock
- Electro-Harmonix KT90 Matched Quad$179.00
- TungSol KT120 Matched Quad$188.00
- Genalex KT88 Gold Lion Matched Quad$230.00
- TungSol KT150 Matched Quad$376.00
- Electro-Harmonix KT88 Matched SextetOut of stock
- JJ/Tesla KT88 Matched SextetOut of stock
- Electro-Harmonix KT90 Matched Sextet$268.50
- Genalex KT88 Gold Lion Matched Sextet$345.00