The most distinctive sound feature of the Heerlen ECC83's is the transparent, natural and expansive midrange presentation, with a slight touch of warmth that illuminates your music. Every piece of music you play through these tubes sounds like from a vinyl record, whether your sound source is phono or not.
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Getter: Top Halo. Manufacturer: RCA. The tubes need to get to you in one piece. Mutual Conductance: 3150/3150gm and 3150/3100gm where 1950gm is minimum and 3000gm NOS. Plate(s): Long(17mm) Grey Ladder.
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The orange Motorola print is partially faded due to age, but the tubes are structurally clean with strong getters, straight pins, and excellent internal condition. • Motorola 12AX7A – Made in USA. All tubes test strong with no shorts or leakage.
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Second 18000 EI.5 BA / 1900 EI.7 BA Nominal 1600 1.2.
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Original box (has wear & tear). Balanced sides at~ 4%. These are great for hard and classic rock. Gas (Grid Current): Passed. Gain: (91.2 & 87.7) MU and side balance. Test results will vary between testers as it is not an exact science.
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1960's Amperex 12AX7A ECC83 Globe Label. Super Strong NOS range. We cannot be responsible for what tubes test in another tester.
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Up for sale is a Raytheon 12AX7A ECC83 NOS NIB single tube, tested for quality. This vintage tube is perfect for audio enthusiasts looking to add to their collection. Made in the United States, this tube is a rare find and guaranteed to be of top quality. Don't miss out on the opportunity to own this piece of audio history.
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FOR SALE 2 AMPEREX 12AU7A NEW NOS TUBES.
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