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Manufacturer's ID: 12AX7A
The PM range of guitar tubes is a unique blend of proven vintage technology plus an intensive research development program covering all aspects of performance and production. The result? Tubes of unparalleled sound quality and reliability. That’s why PM are design consultants and tube suppliers to many of the biggest names in the music business for both guitar and high-end audio.
This high quality tube will replace all 12AX7, 12AX7A, 12AX7WA, ECC83, E83CC, ECC803S, 5751, 6157, 7025, and M8137 tubes. The 12AX7 is the single most important signal preamp tube. PM tubes are built to the highest possible standard and have extra screening to eliminate microphony (squeal) and excessive white noise.