Description: This listing is for a pair of 12B4A (GE and Sylvania) vacuum tubes - Test strong/over 100%. See full testing details and results below. Photos are of the item(s) for sale. These used tubes test “GOOD” on my calibrated Hickok 6000A tube tester. Each tube passed the following tests (for each section of multi-section tubes) on the calibrated Hickok 6000A tube tester:Filament ContinuityShorts Test Gas (Grid Current)Test Life Test (pass = long life expectancy and satisfactory performance)Quality Test (Emission test on a 0-120 scale - pass = any result above 60)Each tube was also tested for Mutual Conductance. The Mutual Conductance of an average new 12B4 is listed as 6500 on the Hickok 6000A tube chart. Results below: GE 12B4A: 7250 / 6500 111%Sylvania 12B4A: 6500 / 6500 100% I only ship to the continental United States - at the shipping price listed (determined by customer location and shipping choice). All tubes will be packed carefully and shipped quickly. Any tube that doesn’t meet your expectations can be returned for a refund. Check out my feedback. I’ve been on eBay for 23 years, and I am starting to sell some of my tubes and other audio gear. If you have any questions, please reach out. Thanks, Dan
Price: 10 USD
Location: Dacula, Georgia
End Time: 2025-02-09T22:21:06.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Model: 12B4A
Brand: SYLVANIA
Type: Vacuum Tube
MPN: 12B4A
