Check the listing for details. New 1x Electro Harmonix 12AX7 / ECC83 | One / Single Preamp Tube | EH. Condition: New. Listed at 24.99 USD. Brand New Electro-Harmonix 12AX7 Single Tube The Electro Harmonix 12AX7 provides high gain with ultra low noise and a detailed, musical tone that rivals the most desirable NOS types. Unique spiral filament eliminates filament to cathode induced hum common on amps that use AC on the filaments. Why You Should Do Business With UsComes with original packaging from the factory, as shown in the pictureVery competitive pricesFast shippingShippingTubes will be shipped with USPS First-Class MailMost orders are shipped within 24 hoursTracking information is included for every purchaseReturn Policy Customer satisfaction is our #1 priority. If you are not pleased with your purchase you may return your item for a refund up to 30 days after purchase. About Us We are musicians who crave awesome tones. We all know that swapping out tubes can be one of the more effective ways of improving your tone. At Tonal Tubes, we help you achieve that next level tone.