Art Audio has opted only to sell factory matched, Platinum Grade 300B Tubes from Electro-Harmonix.
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, 40 Watt plate dissipation, classic large-shoulder tube glass, and is available in precision matched pairs. The 300B EH's plate curves and static DC characteristics (plate resistance, transconductance, mu) also exactly match the original’s for superior performance in any vintage or modern 300B amplifier.
Typically ships within 3-5 business days.