RAYTHEON USA. CRP 12AX7 Valve Tube. Long Grey Plates & Square Getter.
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Tested strong at:98/99 with a minimum of 70 on the tester. Tube passed ALL tests. TESTED GOOD, WORKED GOOD & SOUNDED GOOD IN OUR GEAR. This is very important! We strive to make this happen!
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12AX7 ECC83. 1959 RAYTHEON USA. 12AX7 LOW-NOISE TYPE. RARE NOS "BETTER THAN FACTORY SPEC" TUBE. AUTHENTIC NOS MADE IN USA. NOTE: Box is missing a flap. Insignificant what the condition the box is in, you're listening to the tube - that's what counts, tone, quietness, non-micro-phonic, and electrical condition of the tube, that's what counts!
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12AX7A Baldwin by RAYTHEON Long Black Plates O Getter Tested Tube. The sound of the 12AX7A RAYTHEON Long Black Plates Labeled Baldwin Halo Getter is generally characterized as detailed, precise and with good definition.
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Both tested strong on a professionally calibrated TV7B/U tube tester with the following results (32 is minimum): Tube 1- 40/42 Tube 2- 44/48
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Matched Quad (4). However, they are well matched. Long Black Plate. Made in USA. ____ ______. Works well in my preamplifier.
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NOS tubes fall within the Gm characteristic range of an average tube, as published in the RCA RECEIVING TUBE MANUAL, which states "Individual tubes, like any manufactured product, may have characteristics that range above or below the values given.
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W/ 2 Adapters to 12AX7 Included (5755 --> 12AX7). Pair Raytheon CK5755. TESTED as 5755 on SENCORE TC-136. NOS w/ 2 Original Boxes Included. AUDIO VACUUM TUBES. DATE CODES: 19 U08 DATE CODES MATCHING .
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