Up for sale is one Telefunken G73-R Black Label. Black labels are earlier military issue (for use in radar equipment and avionics) while the later Red Labels were used in medical equipment. Each has a very specific sound signature. Bought these from Hanoi Tubes. Both were dead quiet in my Pendant SE, with zero noise or microphonics.

I recently sold my Pendant SE, so now I am selling off my collection of 12A*7 (and equivalent) input tubes. I will bundle sales together for a discount so if you are looking for something in particular please PM me.

What is a G73-R?

"Surpassing the quality control requirements of the famous Telefunken ECC802S, these are extremely rare, limited production, black shield coated, avionics/aircraft grade, factory selected Telefunken G73R. Manufactured solely for Agilent Technology and Hewlett-Packard, the proprietary G73R part number and RFI/EMI black coat shielding indicate the highest quality grading on the planet. This illustrates exhaustive aftermarket testing for low noise, uniform output, low microphonics, freedom from physical defects, long heater life and an even, uniform cathode emission."

I have one tube for sale. Price for one tube is $450

Comes from a pet free, smoke free home. Price includes PayPal fees and shipping to CONUS.