Originally built as a premium, ruggedized version of the 12AX7, the 7025 was specifically selected for the lowest possible microphonics and hum, making it the top choice for critical audio applications.
Item Tag: United States
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Five (5) RCA/GE (HP Label) 7025/12AX7/ECC83 Long Gray Plate USA
Long Gray Plate. 1 tube has O-Getter. Label is partially erased. Made in USA. ____ ______. Tested in my preamplifier to make sure working as intended with no issues at all. where minimum good value is 875.
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Balanced NOS RCA 7025 Short Gray Plates Halo Getter NIB Cond Tests NOS Amplitrex
Tested on an Amplitrex AT1000. Balanced NOS RCA 7025 Preamp Tube | Short Gray Plates | Halo Getter | NIB Condition | 1968 Production.
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3 Date Matched Admiral /GE 6SN7GTB Vacuum Tubes Tested NOS On Calibrated TV – 7
All 3 tubes were made by GE for Admiral. This tester also is used in conjunction with a variac to maintain test results accuracy and consistency. Average new tube value – 76/76. Minimum tube value – 50/50.
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RCA 6SN7GTB Matched Pair NOS/NIB Black tall Ladder Plates matched & balanced!!!
Up for sale is amatched pair of RCA 6SN7GTB vacuum tubes Type: Dual triode (6SN7GTB). (2) RCA 6SN7GTB tubes. ot all 6SN7GTBs are equal—these are the earlier RCA builds withblack ladder plates and tall glass, before the later grey-plate versions.
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SYLVANIA 6SN7 GTB TUBE 1968 GREEN LABEL BLACK BASE CHROME TOP FOIL MATCHED SET
🏭 Manufactured by Sylvania in Emporium, Pennsylvania during the 12th week March of 1968. ✨ Sylvania factory boxes are included. PERFECT MATCHED SET. 📅 42 = internal lot, tooling, shift, or inspector designation.
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(2) GE 6SN7GTB Short Bottle Tubes Ring Sidegetters Bridged Filament Test Strong
Tube 1 Emissions 91% & 86% | GM 100% & 96%. Tube 2 Emissions 83% & 86% | GM 100% & 96%.
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1 Raytheon 6SN7GTB Vacuum Tube Tested NOS On Calibrated TV – 7
This tester also is used in conjunction with a variac to maintain test results accuracy and consistency. Average new tube value 76/76. Tube test Value – 80/82. Minimum tube value – 50/50.
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GE 6SN7 GTB 1962 WHITE LABEL CHROME SIDED HALO TALL BLACK BASE MATCHING SET
Where 50 ( μ) is Good these tubes peg at 73/77 for Emission. Where 2,600 (ma/V ) is Good these tubes peg at 3,000/3,100 for Mutual Conductance. Mutual Conductance: The 750 is a dynamic mutual conductance tester.