RFT is a German brand. The RFT ECC83 / 12AX7 is a durable tube with very low microphonics. The RFT ECC83 is well known as a fantastic hard rock "crunch" tube in Marshalls, Mesa-Boogies, and similar amps. They are slightly darker sounding than many other 12AX7/ECC83 tubes. Our stock was received in bulk packs so we have packaged these RFT ECC83 tubes in our own white boxes. Logos may vary from tube pictured, but construction is the same. Other NOS Treasures       12AX7 Types Click image to enlarge Availability: Usually ships within 24 hours. RS-ECC83$59.95

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