Mullard CV4004 / 12AX7

The Mullard CV4004 is rugged version of the 12AX7. Made for the English Military, the CV4004 is one of the best 12AX7 variants you can use for audio.

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For maximum performance and longevity, vacuum tubes should always be stored and transported in a safe and secure fashion. The TubeCube and the TubeCube Pro provide a customizable shock-resistant environment for your tubes and helps prevent them from becoming microphonic or damaged.

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Mullard CV4004 / 12AX7