Audio Research 6dj8, Ecc-88, 6922, NOS German tubes 4 tubes total, Amplitrex tested

I have for sale (4 ) four Audio Research labeled new old stock 6DJ8, ECC-88, 6922 vacuum tubes. If you're looking to re-tube your Audio Research preamp these tubes would be a great replacement to your old and worn original tubes. A fresh re-tube can have immediate sonic improvements...these tubes will also work equally as well in non Audio Research equipment too.

Please note, the ad is for 4 tubes total... do the research and you'll see it's a good price for NOS Audio Research tubes.
These are high quality Western European tubes which are regarded as some of the best and lowest noise NOS tubes available. The tubes are coded as Ecc-88. The 6dj8 is the American version, the ECC-88 is the European version and the 6922 is the Russian industrial higher voltage version of the same tube. All 3 tube types are interchangeable. These tubes are vintage NOS tubes and have never been used or installed. The date code on the tubes are all from 1983 and all from the same factory. . No International sales, Continental USA sales only.

The lettering on the tubes say Audio Research Corporation, 32001100 (ARC's part number) made in W. Germany, ECC-88. These tubes are part of a 100 tray factory lot, so they do not have individual boxes but I will package them in brand new generic tube boxes for shipment. The tubes test as new and rated like the manufacturer does which is for transconductance or the GM rating. The GM rating will all be over 100 for the tubes ...I test the tubes and listen to them on a Reference quality Amplitrex AT-1000 tube tester..
Shipping will be $4.95 using usps priority mail. NO INTERNATIONAL SALES, CONTINENTAL USA Sales only.

For payment, I accept paypal. Also, check my feedback on previous tubes and purchase with confidence.