Ray Tubes 12AX7 CORE Vacuum Tube

Beyond the Ordinary Ray Tubes’ CORE Collection of vacuum tubes offers the quintessential upgrade for audiophiles ready to move beyond the limitations of standard factory vacuum tubes. Each vacuum tube is hand-selected, with a strict process that allows only the top percentile of a production batch—those that meet and surpass their rigorous standards for gain, conductance, noise, and microphonics—into your audio system. Choosing Certainty: Why New Stock is Better When you buy our CORE Collection of vacuum tubes, you’re guaranteeing that your listening is enhanced by the best of today’s technology. In contrast, when you buy New Old Stock (NOS) vacuum tubes, you’re venturing into unknown territory. While NOS vacuum tubes carry undeniable vintage charm, they often come with hidden risks. Over time, even unused vacuum tubes (hence the “new” in “new old stock”) can degrade, leading to reliability issues and unpredictable performance. You might face diminished sound quality or even failure, a