The Ultimate EL34 replacement. The KT77
has been the most desirable tube in the
world for quite a long time.

The MOV valve company designed the KT77 as an EL34-super high end replacement, simular to the KT66 as a replacment for the 6L6

These new JJ KT77 tubes are amazing - super high quality big, full tone with really great treble, midrange and bass response - an "Ultimate EL34".

A drop in replacment for EL34 tubes in your Marshall or any amp using them.

BUT - not everyone notices this -
They will also drop in to an amp wired for 6L6's WITHOUT HAVING TO REWIRE THE TUBE SOCKET. They do not need to have pin 1 connected to Pin 8 to operate - cool

BUT not everyone will notice this either -their impedence is different from an EL34. They will match up to a 6L6 output transformer perfectly!!

SO if you have an amp with 6L6 power tubes and want the EL34 sound, just plug them in and set the bias - very cool!

(there is a consideration regarding the current draw of the filaments. A 6L6 uses .9 to 1 amp per tube filament current. the KT77 uses 1.4 amp. Some marginal amps will be stressed if they were built to just barely handle the 6L6, the Fender Hot rod deluxe and blues deluxe are marginal amps for example)

We are going to be using these tubes A LOT!!

These tubes will work in any amp using EL34, 6CA7, 6L6, 5881, KT66, Kt77 tubes, vintage or current manufacture - including: Fender, Gibson, Marshall, Torres Engineering, Vox, Alamo, Kalamazoo, HiWatt, Orange, Silvertone, Supro, Sound City, Matt, Traynor, Carvin, Silvertone, Bogen, Gretsch, Harmony, Valco, Wards, Airline, Kay, Krank, B-52, Ibanez, Epiphone, Crate, Ampeg, Danelectro, Peavey, Washburn, Sovtek, EH, Matchless, Mesa Boogie, Soldano, Park, Sundown, Rivera, Acoustic, Bogner, Sunn, Kitty Hawk, Laney,Top Hat, Trainwreck, Yamaha, Groove Tubes, MusicMan, Garnet, Selmer, Aims, Standel, Magnatone, Masco, Premier, Univox, Valco, Sho-Bud, Watkins, Tiesco, Dynacord - and lots more!

Bias adjustment may be necessary



NEW, NEW The tube! KT77 JJ matched - the real thing
Tu6612 KT77 JJ$22.95
price is for one tube, order 2 or 4 for your matched set: 

Click to enlargeGold Lion Genelex KT77 the ultimate tube!The Greatest tube!! The Genelex Gold Lion KT77.

A super deluxe EL34 AND a fantastic 6L6 replacement. BOTH - these are very premium tubes, always matched. the best stuff there is, bar none.

Tu6873 KT77$49.95

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FREE SHIPPING ON ANY ORDER OVER $60.00 - FREE!  (in the U.S. only

NOTICE - THE  ORANGE DROP CAPACITORS USED IN OUR KITS HAVE BEEN 100% DISCONTINUED BY THE MANFACTURER FOR EVER. THEY WILL NEVER BE MADE IN THE U.S. AGAIN

HIGH QUALITY Mallory Tubular Capacitors will be included in your kit

we apolgize for this, but no one anywhere was warned or informed in any way prior to discontinuance. 

We can install any and all of our kits in our custom workshop - email for info.

Check out Torres Guitars.com our new info site

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We have all the parts and tubes for ALL the mods. check it out 

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Torres Engineering
2500 Alder #226
Milton WA 98354-7001
 Email   amps006@gmail.com