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Product Details Vacuum Tube, 12AX7 / ECC83, JJ Electronics, Standard Pins, PreampT-12AX7-S-JJSold individually The JJ Electronic 12AX7 / ECC83 has quickly become a modern classic in preamp tubes. Its rugged design and rich harmonics make this tube an obvious choice for musicians who need a reliable and high quality tube at a reasonable price. The balanced tone of the JJ 12AX7 works well in any amp. This versatile tube sounds excellent in clean amps offering an amazing dynamic response while also proving itself in high gain amps with its low noise and noticeably less microphonic issues than other tubes. The warm highs and transparent lows make it a great choice for any position in a tube amp. The JJ 12AX7 is the go-to tube of many amp builders and touring musicians. Not what you’re looking for? Check out our other products in this category:Vacuum Tubes -> PreamplifierClick here to visit our ebay store’s homepage.MeasurementsProduct Measurements:Body Height49.2 mmCathode Current (Ik)≤ 8 mAFilament Current (If)300 / 150 mAFilament Voltage (Uf)6.3 / 12.6 VGain (μ)100Grid Circuit Resistance (Rg)2.2 MΩGrid Voltage (Ug)≥ -50 V, -2 V typicalHeater to cathode resistance (Rk/f)150 kΩHeater to cathode voltage (Uk/f)≤ 180 VInternal Resistance (Ri)62.5 kΩItem Diameter22 mmItem Height56.3 mmPlate Current (Ia)1.2 mAPlate Dissipation (Wa)≤ 1 WPlate Voltage (Ua)≤ 300 V, 250 V typicalTransconductance (S)1.6 mA/VPackaging Information:Packaging Dimensions1 in. x 1 in. x 2.5 in.Weight (Packaging)0.0287 lbs.About UsAbout Amplified Parts:Backed by over 30 years of experience serving the electronic hobbyist market, Amplified Parts® provides the parts you need to modify, repair, or build your own audio and musical instrument equipment, from transistor radios to vacuum tube amplifiers, guitar pedals, and modular synthesizers. Our mission is to provide our customers with high quality products from an inventory of over 12,000 unique items, and to share our expertise via our large library of tech articles and equipment build guides.Whether you are building cutting-edge equipment or restoring classic gear with historical accuracy, Amplified Parts® has what you need.We typically ship the same day if your order is placed before 12:00pm Arizona Time Monday through Friday excluding holidays.All packages are insured and we assume responsibility for the shipment until the carrier shows delivery.Click here to visit our ebay storefront.