![]() ![]() In amps that are made to use both 6L6's and E元4's the JJ 6550's are almost universally usable. The JJ 6550 can be used in quite a few 6L6 amps that don't have room for KT66's or KT88's but this is a case by case scenario because the heater draw is 1.6 amps and some 6L6 amps can't handle this. Both the KT66's and KT88's use the large diameter bases so if you have an amp that uses the "bear trap" style tube retainers that pinch the base of the tubes then these will either need to be flattened out, removed or replaced with the "spring and cap" style tube retainers. The only exception to this is if you choose to run one of our Integrated quads using two KT66's or KT88's in the outside two sockets and two 6L6GC's in the inside two sockets and this only works in the 5150 or 6505 heads. Amps like the Peavey XXX, JSX and 5150's/6505's cannot use them. The JJ KT66 can be used in a variety of amps that use 6L6's if there is room! The JJ KT66's and the JJ KT88's are the same diameter as the original GEC KT66's and KT88's which is just under 2 1/8" so you need an absolute bare minimum of 2 1/4" measured from the centerline of one socket to the centerline of the next socket for them to physically fit in an amp. ![]() These are real meaty sounding and as close to blending a 6L6GC with an E元4 as you can get. The JJ Big Bottle 6CA7 is also a drop in replacement for any E元4 type amp. Sound reference kt88 tube power amp full#The clean tone is very fat and full and the crunch has more of a chunk to it and it's very punchy but not quite as aggressive as the E34L. The 77's have even a bit more low end extension than the E34L's and they have a nice sizzle in the top end that is not brittle. The JJ KT77 is not quite a tight as the E34L but tighter than an E元4. The JJ KT77 is a drop in replacement for almost any E元4 type tube amp for a little different flavor. We literally have thousands of customers now using the JJ 6V6's in their Fender Hotrod Deluxe and Deville amps with great success since 2003. They also have a deeper thump and breakup earlier than 6L6's do. By choosing the proper grade these can be run in the E元4 mode and have the best clean tone we've ever heard from a Dual Rec. The JJ 6V6's are so robust that we have been using them in lots of amps including several of our Blackface Bassman amps and in our Mesa Dual Rec. The JJ 6V6S's are a VERY nice 6V6 and sound stellar in any 6V6 amp or for a little more headroom the JJ 6L6GC's will fit the bill with a simple bias adjustment. We used to routinely tube all of the old Fender Deluxe’s with the JJ 6L6GC’s but since the JJ 6V6S arrived ( 11/03 ) you can go either way. Since there are no decent 6V6 tubes being made currently WHAT!! Wait a minute!! Who says? Thanks to Mark Beach ( a loyal customer of ours who reminded us that we needed to change this page ) there are now two solutions for Fender Deluxe amps. It is also an option for all the 5 watters like the Valve Junior, Blackheart, Mini Cat and others. Sound reference kt88 tube power amp pro#These will drop into most cathode and fixed biased amps like the Orange AD amps, VOX AC amps, Laney VC amps, Crate V and VC amps including the Palomino, Budda amps, Fender Blues and Pro junior amps. ![]() It has a very smooth sweet breakup just like the JJ EL84 and it will breakup a couple decibels earlier. Now if you want a little less power and an earlier breakup you can have it! The JJ EL844 is an entirely new tube that dissipates 9 watts and is a drop in replacement for EL84's in most all amps. Until the JJ EL844 came on the scene in 2011 there really were no substitute tubes for EL84 / 6BQ5 tubes. ![]() There are a lot of amps that can use different tubes to change or improve their tone for different styles of playing. ![]()
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