Tests 1700/1750 for gm where 875 is good in a calibrated Hickok 539-B tester.
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.