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The Emission Labs website is for product presentation.
Sales is via external companies.
NEWSFLASH.... We are working on a plug and play version of 300B-Mesh, which can work in every 300B power amplifier. Release will be in 2026. Read more here....

EML45, burning in Yamamoto A08-S amplifier
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 cathode wire and emission materials. Our commitment to sound quality, durability, and reliability is backed by our 5-year extended warranty.