Raytheon blackplate 12au7 vaunted yellow label Circa 1950's

Organ grade 12au7. Miniature blackplates were what put Raytheon on the audiophile map back in the day. Fantastic extension and depth in all parameters of the audio sphere. The resolution offered by blackplate Raytheons can be uncanny. One of the most desirable 12au7's on the planet, period. Great opportunity for tube rollers and tube newbs alike. In this condition, these are the last of a dying breed, get them while you still can. Price is per pair. All conditions firm.Will test at or close to new, Some labelling is faded on some tubes, will be matched. Flat rate untracked shipping $10 to lower 48

All tubes are tested on 2 different and very accurate mutual conductance testers with no bloated or just plain made up results, with tubes especially, do not lose sight of the fact that most often, you get what you pay for. Tubes will be packed tightly and safely; look to my other classifieds for other fine vintage tubes, and be sure to drop me an email with any questions, or inventory needs, thanks