We purchased these tubes on pretense that they were NOS Tesla ECC803S tubes. We discovered that they are in fact relabeled JJ Electronic ECC803S tubes, not Tesla. They are all new production JJ ECC803-S tubes and are priced accordingly. Note: Because this tube has a long plate structure it is susceptible to excessive microphonics and is therefore not recommended for use in combo amps or high gain stages. For these amps the JJ ECC83-S is a better choice. View JJ ECC803-S tube data sheet. Availability: Usually ships within 24 hours. Quantity pricing: Order 5 tubes and save $2 a tube.  Other JJ tubes
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