1960's Telefunken ECC83/12AX7 diamond bottom, long smooth plate pair. 

Made in W. Germany.

Test 1500/1600 & 1625/1700 where 875 is pass in a calibrated Hickok 539-B.

Listening tested for excessive noise and microphonics in a Maxi-preamp 2 noise tester.

All tubes are guaranteed good or may be returned.  

Shipping includes insurance.

Please see our other items for more vintage tubes & audio.

We combine orders for shipping.

We do not change values for customs.  

Thank You.