AMPLITREX AT-1000. Tube Tested on a Digital AMPLITREX AT1000 Tube Tester. Three GE 12AT7 ECC81 Tubes. MULLARD BLACKBURN Mfg. GE Tube Lettering & Boxes. NOS NIB Tubes. Mfg/Date Codes : TK3/B6L2,TK3/B6L2,VF3/B0K5 Value Added Tubes.
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PAIR - RCA - JAN-5654W - VACUUM TUBES - AMPLITREX TESTED - MATCHED DATES. Nice, clean tubes tested on my Amplitrex (Fixed Bias) tube tester.
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6201 = 12AT7WA = ECC801S = E81CC = CV3508 = CV5212. 12AT7WA = 6201. It is often used for Hi-Fi applications. It provides very smooth mids and high end with a lot of detail. YOU CAN NOT GO WRONG IN YOUR 12AT7 / ECC801S / 6201.
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6201 = ECC801S = E81CC. 6201 = 12AT7WA = ECC801S = E81CC = CV3508 = CV5212. It is often used for Hi-Fi applications. It provides very smooth mids and high end with a lot of detail. THE 3-MICA 6201!
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Tested Good. Min = 50, 100% = 77.
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Tested Good.
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Labeled "RCA", manufactured by "GE".
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THE 6201 IS ETCHED ON THE GLASS. MFG DATE 1986. FROM A FRESH OPENED CASE.
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