Tests 2350/2550 where good is 1700 at 250 volts in a Triplett 3444/Westmore 501 calibrated and upgraded by Paul Hart.

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

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.  

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