Electro Harmonix 6CG7EH
Many Electro-Harmonix valves are re-branded and re-labeled and are used in many amplifiers of different manufacture. The reason for this is that they are a seriously high-grade tube of good structure making them very reliable. The EH Tubes are compared with NOS due to their high-quality tone. The Electro Harmonix 6CG7 is in the category of this elite type of valves.
Big Bottle Tetrode
Electro-Harmonix tubes are all new designs and are of excellent quality. Many OEMs use relabeled Electro-Harmonix vacuum tubes in their amplifiers. If you want great sounding tubes at a very reasonable price, then Electro-Harmonix tubes should be on your list.