The 6550 KT88 Matched Quad are factory matched and further tested and refined matching by us. Check out our Supermatch technology. Product is manufactured by JJ Electronic in the Slovak Republic.
We issue a test certificate with each set . We only have one set like this that are as close a match as you can get on high power valves such as these
This is one big bottle packing a lot of output power !! These beam pentodes can handle 42 watts in single ended pentode mode applications or a 100 watts in push pull mode.
As these are high power valves it is VERY strongly recommended that the bias is checked when inserting in your amp.The valve life can be severely reduced if the bias is not set correctly.
We also offer a 120 day from purchase warranty on the product ( excludes user caused mechanical damage failure and incorrectly set bias ).
Note: Valves use high voltages and these voltages are dangerous. The amp can still retain these high voltages for some time even after being switched off. If you are not sure of fitting them , please seek the services of qualified personnel