Every package here is an upgrade from the factory-installed tubes.

With our new Shop by Amp feature simply locate your amp, choose the tube upgrade package you are looking for, and add all the tubes you need to your shopping cart with a single click of an "Add to Cart" button.

If you want to modify a tube package you can. After adding a package to the shopping cart you can add or remove tubes one at a time. You can substitute, add, or remove individual tubes as you require!