KCA NOS Tubes

08/02/2026

https://www.kcanostubes.com/content/nos-mullard-cv4024-12at7

Manufactured in Mullard's Mitchum factory in the early 1980's. Nice military stock. Original white military boxes. Try one of these in your phase inverter or reverb driver socket (only if your amp calls for 12AT7s in these positions) in your Fender amp for a real upgrade in tone! Also superb in audi...

08/02/2026

https://www.kcanostubes.com/content/nos-jan-ge-5751-1980s

Number one choice for guitar amps where lower gain and smoother tone is required. These remove harshness in some guitar amps.ﾠﾠ

08/02/2026

https://www.kcanostubes.com/Sylvania%206V6GTA

NOS in original boxes.

08/02/2026

Last matched pair!

Labeled and boxed as Haltron England in VERY cool original boxes! Also labeled GEC in white boxes, etc. Excellent in any 6V6 amp. 1950s 6V6 tube with ST ("coke bottle") shape and black glass. Put some British tone in your 6V6 amp. Excellent in Princetons, Deluxes, Champs, Marshall Studio 15s and bou...

08/02/2026

https://www.kcanostubes.com/TungSol5881

07/20/2026

The NOS tube business is in the wind down phase due to lack of new inventory. Here's a great item that will likely sell out this year.

1943 vintage. Holy Grail of 6V6 tone! JAN (Joint Army Navy) version which means that they're extra resistant to high G forces, vibration, etc. This means you'll be safe at your next gig on a space mission! :) Original military boxes as shown. Great in your Deluxe, Deluxe Reverb, Princeton, Princeton...

05/28/2026

We're getting close to the end of these and most sought after guitar amp tubes. Jump on it now!

02/03/2026

Here's a cool item I dug up in the archives while "organizing" the inventory. Very rare and toneful! Great in any 6V6 amp.

NOS in original boxes. Super toneful and very difficult to source, especially in matched pairs. Only a few available.

11/24/2025

https://www.kcanostubes.com/node/1108

NOS in original boxes labeled National Electronics and white boxes.

11/19/2025

Down to the last 2 of these very cool EF86s. Dr Z and Matchless peeps take note!

Found a few in the archives. These won't last! A great alternative is the NOS Tesla EF806s (high grade EF86) https://www.kcanostubes.com/content/nos-tesla-ef806s-not-jj-high-grade-ef86 Another great one is the Amperex, Holland, EF86. Darios were made in Holland and appear to be identical to thise tu...