The Electro Harmonix EH 300B Gold, offered here as a matched pair, is the premium 300B valve. This top shelf, Russian-made 300B EH features gold grid wire for increased bias stability and top of the line sonic performance. The first 300B entered the market back in 1938. And the valve is still in production today, so you know it’s good!
Ultra-long life, high-quality construction and superior sonics with improved performance make it a top choice over 300B valves from other manufacturers. Like the original Western Electric 300B, the Electro Harmonix offering has the eight course, directly heated filament, 40 Watt plate dissipation, and classic large-shoulder tube glass.
The EH 300B plate curves and static DC characteristics (plate resistance, transconductance, mu) also exactly match the original 300B for superior performance in any vintage or modern 300B amplifier. Accurately factory tested and matched. The factory checks for mutual conductance and current and attaches the data to the top of each valve box.
EH makes their 300Bs with genuine care. They’re the perfect choice for replacing or upgrading your quality hi-fi amp.
Made in Russia.
Includes our class-leading 180 day warranty.
