The 12CA5 is a high voltage vacuum tube manufactured by RoHS-compatible supplier, MELZ. This dual-element tube has a 12AX7/ECC83 triode-pentode element on a 9-pin base, commonly used in preamplifiers, amplifiers and hifi systems. It features low noise, low microphonics, reliable performance, and good frequency response, making it suitable for many musical instrument amplifiers and music equipment. Additionally, its large plate dissipation is beneficial for audio volume.