SOLD
Asking $275 $250 $175 plus shipping
For sale is a pair of Electro-Harmonix 300b power triode tubes. Russian tubes are no longer being imported. These were manufactured just a few years ago.
These were used for about 150 hours in a SET amplifier without issues. Great 300b sound!
The tubes were retested after use on my eTracer computerized tube tester. Tested at 350 plate volts, -71.5v bias. New plate current (Ip) is 60mA, transconductance (gm) is 5000
Tube R Ip = 47.73 mA (80%) gm = 4888 (97.8%)
Tube L Ip = 51.01 mA (85%) gm = 5016 (100.3%)
Tubes come in original boxes with full testing data on box and original factory testing numbers.
Shipping via USPS Priority Mail only.
For sale is a pair of Electro-Harmonix 300b power triode tubes. Russian tubes are no longer being imported. These were manufactured just a few years ago.
These were used for about 150 hours in a SET amplifier without issues. Great 300b sound!
The tubes were retested after use on my eTracer computerized tube tester. Tested at 350 plate volts, -71.5v bias. New plate current (Ip) is 60mA, transconductance (gm) is 5000
Tube R Ip = 47.73 mA (80%) gm = 4888 (97.8%)
Tube L Ip = 51.01 mA (85%) gm = 5016 (100.3%)
Tubes come in original boxes with full testing data on box and original factory testing numbers.
Shipping via USPS Priority Mail only.
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