One thought on “Brimar 6067/12au7 Black Plates”

  1. The Brimar 6067 stands as one of the rarest “Special Type” valves ever to leave the United Kingdom. While the market is flooded with 6067 variants—some of which aren’t even authentic Brimar production—the genuine Black Plate version is a masterclass in vacuum tube engineering.

    The physical construction is immediately impressive, featuring:

    • Black plates with a distinct single connected joint.
    • An exceptionally large halo getter.
    • High-conductivity copper rods.
    • Welded tabs for superior plate support and vibration reduction.

    Technically, these tubes offer a slightly higher gain (mu: 20) compared to a standard 12AU7. However, they remain completely compatible with any 12AU7 circuit, offering a significant upgrade in build quality and longevity over standard consumer-grade glass.

    Sonic Performance

    The sound is exactly what you would hope for from a tube of this pedigree. For those who claim modern production tubes can rival New Old Stock (NOS) giants, the 6067 is the ultimate rebuttal.

    The most striking feature is the 3D soundstage; it creates a holographic space that feels tangible. During testing, Steve Strauss’s rendition of “Mr. Bones” was delivered with such startling clarity and presence that it became difficult to focus on the technical aspects of the review—the music simply takes over.

    The bass is tight and authoritative, and while the micro-details are abundant, they are presented without a hint of “edge” or listener fatigue. It is a smooth, refined, and deeply musical experience.

    Final Verdict

    The Brimar 6067 Black Plate is a “holy grail” tube that is increasingly hard to find, but it is undeniably well worth the hunt. If you want to take your setup to the absolute limit, pairing these with the Brimar 6060 creates a legendary combo that is nearly impossible to beat.

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