(1) Mullard 7025. Made by Mullard for GE. Large halo getter. This is also known as a CV4004/ECC83 tube type. The printing on this tube is in superb condition as seen in the photos. Highly sought after and very rare in NOS form.
Item Category: Vintage Electronics
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MULLARD ECC83 BLACKBURN 12AX7 MC1 LONG PLATE TIGHT BAL TEST NOS VINTAGE 1957
Average NOS test results for 12AX7’s 1250 microhmos on the Hickok 600A.
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12AX7 TUBE SYLVANIA TESTED & BOXED VINTAGE COMMERCIAL SURPLUS
Boxes might show wear from being in storage. Everything can be resolved without leaving a negative feed back. PRICES BASED ON AVERAGE SOLD PRICES. Call for technical specs.
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12AX7/ECC83 Siemens Tall Plate MaxiPreamp2/TV7 Tested (1)Tube Lot
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
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Pair of Tungsram (GT label) 12AX7 ECC83 Vacuum Tubes #1
Tested on the Amplitrex AT1000, with results shown in the table below. Actual manufacturer Tungsram. Number 12AX7. Small signal (i.e. 12AX7) tubes are generally checked for noise and microphonics; power tubes (i.e. 6L6) are usually not.
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NOS Pair RCA 12AX7A ECC83 Made in Japan Short Gray Plates Tests NOS Amplitrex
NOS Pair RCA 12AX7A ECC83 Preamp Tubes | Made in Japan | Short Gray Plates | Halo Getters. Tested on an Amplitrex AT1000.
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NOS Mullard 12AX7 Tube
NOS Mullard 12AX7 Tube, cany read the brand that Mullard made this for but you can clearly see the Made in Great Britain imprint. Tested on a Orange MKII Value Tester and it tested 10.
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Strong Testing Pair of Vintage EI 12AX7/ECC83 Vacuum Tubes w/Matching Codes
They have matching date codes of 2A1 and EI symbol 9L. The values are marked on each tube. The box is for photo purposes only. Hopefully these will help you in your restorations and upgrades! We have tons of experience!
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Perfectly Matched Pair of Raytheon 12AX7 Black Plate Vacuum Tubes #2
Pair of Raytheon 12AX7 tubes, screened and labeled for Baldwin organs. These feature long, shiny black plates and O getters. Constructed with mica spring “fingers” on the cathodes to reduce microphonics.
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NOS Amperex 12AX7 ECC83 Electronics for Medicine Tubes MATCHED Bugle Boy 12ax7a
Here we have for sale is a rare set of NOS tested Amperex high quality 12AX7 / ECC83 tubes. Great tubes with nice intact labels. Low noise phono grade tubes. They are NOS tested and a MATCHED pair with Balanced triodes.