Sound texture can be felt through infinite levels of details, laying on top of each other, both in depth and in width. So your quest for superb sound clarity can end right here. The "Crown Jewelry" ECC81 tube is here!
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Ex·em·pla·ry HALTRON 6201 / 12AT7-WA TUBE. NOS 1958' HALTRON. THE "PERFECT HALTRON 12AT7/ECC801S/6201. serving as a desirable 6201 = ECC801S tube; representing the best of its kind. IN LOW-NOISE, QUIET, MILITARY SPECIFICATION USA VERSION OF ECC801S.
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Early type, year 1960 copper rods,diamond bottom,triple mica. Close matched pair (matched GM test). Tested on Roetest V10.1 and RM1 tube tester. Tube 2 : 8.1mA / 9.1mA.
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ECC802S SUBSTITUTE. 6211: Premium quality double triode, similar to the 6201 or 12AU7. Its gain factor is typically rated. between 25 and 30, while the 12AU7 / ECC802S has a gain factor of 20. 6211 = 12AU7 / 12AT7 SUB.
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Made in France - year 1958 ( MAZDA - BELVU ). Great for audio - similar quality like TLK ECC802S. RARE NOS/NIB RT 12AU7 ECC82 MIL PAIR. Military tubes are really best tubes - selected tubes - no noise and strong value.
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Possibly the finest 12AT7 variant ever made! Quiet testing and Gm matched to about 12% difference between sections and tubes. Number ECC801S. Small signal (i.e. 12AX7) tubes are generally checked for noise and microphonics; power tubes (i.e. 6L6) are usually not.
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Equivalent to 12AU7, ECC82. Condition: NOS tube. Date: X. 1971. Made in Czechoslovakia Roznov.
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The 12AU7 circuit provides the greatest efficiency for these tubes. This triode style of ECC802S tubes was first made in 1906 for use in early radio capacitors. These capacitors were designed to work as a pair when installed into an amplifier.
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