Superior power Beam tetrode with large plate dimensions and improved grid structure for increased power handling capabilities. Excellent tone and performance compared to most other 6L6 or KT66 types.
• Modeled after the vintage RCA 6L6GC "blackplate"
• Mica spacers with metal springs eliminate tube rattle and microphonics
• 5881/KT66 equivalent
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.
See unmatched version: https://shop.ehx.com/item/6L6EH
Tube Specs: https://shop.ehx.com/catalog/addimages/6l6eh.pdf