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Emission Labs
Welcome to Emission Labs – the official home of high-quality Directly Heated Tubes. Founded in 2001, we’ve been manufacturing in our own Czech factory, with every step done in-house — from glazing tube bases to producing our own cathode wire and emission materials. Our commitment to sound quality, durability, and reliability is backed by our unique 5-year extended warranty.
Our new EML300BM+ burning in Audio Note amplifier.
This tube is compatible to standard 300B. Introduced in Feb. 2026.
EML45, burning in Yamamoto A08-S amplifier