No warranty for guitar amp use on vintage 6BQ5/ EL84's. Too many people throwing them in new guitar amps that aren't designed for them (pinouts, other issues) and frying them. If you know what you're doing this shouldn't be a problem.

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Well used 1961 black oil pair as shown.

rx1 b1h1  rx1 b1f

Test used fair-good 6600 (23.8 ma) & 7300 (26.7 ma) where good is 5,500 at 250 volts in a Triplett 444/Westmore 501 laboratory tube analyzer, restored and upgraded by Paul Hart.   

We cannot be responsible for what tubes test in another tester.

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.