The TAD KT66 delivers classic, old-school tone straight out of the box. Remaking the legendary British KT66 used in MOV (MO Valve), GEC, Genalex, and Gold Lion tubes, it reproduces the rich, warm sound that made the Marshall JTM45 Plexi Amps famous in the 1960s. Known for its smooth yet dynamic character, this tube has been a favourite of guitar legends, including SRV, who used it in his Fender amps for his iconic tone.

Perfect for vintage-inspired and modern amps alike, the TAD KT66 fits in Modern-Vintage Amps 2266 and 2466, as well as classic Plexi Marshall JTM45 and JTM45/100 circuits. It is also a direct replacement for 6L6GC and 5881 tubes.

In addition to guitar amps, the KT66 earned a reputation in QUAD HiFi power amps, offering high-fidelity performance with smooth top end and full-bodied low-mid response, making it ideal for both recording and live use.

Tube height (without pins): approx. 115mm