12ax7 ecc83 cv4004 5751 e83cc ecc803 6057 6681 7025 7058. the high power 5751 are premium 12ax7 ecc83 w/ slightly less gain, introduced in 1949, as military spec and industrial grade. originally designed for aviation, the costly triple mica design is rugged + less prone to microphonics, w/ higher power at 175ma.
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The high power 5751 are premium 12ax7 ecc83 w/ slightly less gain, introduced in 1949, as military spec and industrial grade. audiophile crown jewel '50s ge usa 5star edition! nice to fair silkscreen w/ etch code 'dots', and ge box included.
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The high power 5751 are premium 12ax7 ecc83 w/ slightly less gain, introduced in 1949, as military spec and industrial grade. the top sonic echelon! sought after audiophile crown jewels, revered by enthusiasts for their rich open sound reproduction.
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The sonic top echelon! authentic munich (munchen germany) etch code visible. life test pass! also designed for the communications, the ultra low noise floor translates into crystal clear audio right in your living room.
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This is the classic beauty in sound, admired by audiophiles for over 60 years and will still be our top choice in the next 60 years.
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Equivalent ECC83, 12AX7. Condition: NOS tubes. Date: V. 1976. I send parcels within 24 hours. Made in Czechoslovakia Roznov.
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I'll give you testing photos and the exact tube before sending them out. There are several pairs available. What you see is what you get.
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This premium 7025 is a hard to find top shelf long life low noise 12ax7a / ecc83, often compared to 5751 ecc803 e83cc +. back then w/ a focus on oem products (sanyo + lux audio), nec took over for toshiba (<1975 to 1978+) ending tube production.
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