Hello, fellow audiophiles. I’m downsizing my listening room and unfortunately need to sell off some of my prized items.

Selling a matched pair of very rare and highly sought G73R tubes from Telefunken. I bought these for $800 shipped from reputable tube seller, HanoiTubes. Asking $500 shipped.

Tubes were used on my Cayin HA-6A for roughly 150 hours. Still like new and is one of THE definitive, go-to 12AU7 tubes. Very large upgrade in SQ!

I ship within 24 hours of payment receipt via USPS (to exclude holidays and Sundays).

More info here:

The price is for ONE pair Telefunken G73-R black coated glass, NOS, laboratory product, very reliable version, Tested Nos tightly matched. 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. The ultimate tube for Hi-Fi, tube mics and mic preamps, these tubes are very fine, highly rare and in great demand. Authentic, the real deal, the bottom of the glass is diamond marked.