This is a set of 6 12AD7 low noise reel to reel amplifier tubes. 

I am selling tubes today in lot numbers. Please check out all of my tube lot numbers today. I will combine shipping if you win more than one auction. The shipping cost will be 8.00 no matter how many of this weeks tube auctions you win.

This sale is for six of Halo getter NEC brand 12AD7 tubes. Both sides on all tubes tested like new.

The 12AD7 tubes were designed as low noise and hum replacement for the 12AX7 tubes, used in audio amplifiers, even when AC is used for the filament heater voltage. 

I purchase and sell parts from vintage Reel to Reel recorders, where these 12AD7 tubes are used, but test like new

please check my other auctions today for lots of Akai Roberts, and Sony reel to reel tubes and parts. This is the last pair I have at this time.

   Alan Eaton amplifiers