Electro-Harmonix 300B - Platinum Matched

Ultra-long life, high-quality construction and superior sonics with improved performance make it a top choice over 300B types made by other manufacturers. Like the original Western Electric 300B, it has the eight course, directly heated filament,

See unmatched version: https://shop.ehx.com/item/300B%20EH

Tube Specs: http://shop.ehx.com/catalog/tubes-specs/300BEH.pdf