2 rare quiet medical red tip mullard 12ax7a / 12ax7 tubes
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| Condition | |
| Payment methods |  |
| Ships from | Belpre, OH, 45714 |
| Ships to | United States |
| Package dimensions | 6.0" × 6.0" × 6.0" (1.0 lbs.) |
| Shipping carrier | USPS |
| Shipping cost | $5.00 |
 Average | Research Pricing |
I have 2 rare very quiet medical red tip mallard 12ax7a tubes.The 12ax7a can be used in parallel or series circuits.These tubes test 1425-1475 and 1300-1375 where 800 is minimum good and 1200 to 1250 is new on my calibrated Hickok.I have a acquired a big lot of medical red tip tubes from a retired engineer who worked for grass instruments on there medical systems and polograph machines for almost 30 years and then worked for Honeywell medical systems for his last 8 to 10 years before retiring.I will let the medical tubes out a little bit out a time so everone get a chance at some of them.
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