One of the most commonly found driver tubes found in push-pull vacuum tube audio power amplifiers is the 12AU7 preamp tube. As well, this tube's low gain make it a great choice for tube preamps in hi-fi stereo systems. Other 12AU7 tube equivalent part numbers are ECC82, 5814, 6189, and CV4003...More Details

12AU7 is also known in Europe under its Mullard–Philips tube designation ECC82. [1] There are many equivalent tubes with different names, some identical, some designed for ruggedness, long life, or other characteristics; examples are the US military 5814A and the European special-quality ECC82 and E182CC.

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Like all RFT preamp tubes, the RFT ECC82 / 12AU7 is a low noise and low microphonic vacuum tube. It sounds great and is especially good for guitar amps because of its rugged construction. The ECC82 tube type is equivalent to the North American 12AU7 tube and can be used in any 12AU7 or ECC82 circuit.

ECC82 is 12AU7 medium gain pre-amplifying double triode. Provides a very smooth sound with well-defined tones suitable for audio and guitar amplifiers.

www.jj-electronic.com ECC82 a. F. DOUBLE TRIODE max 22,2 max 49,2 max 56,3 Base: NOVAL Uf = 6,3/12,6 V If = 300/150 ma Typical Characteristics: Ua = 250 V Ug = -8,5 V Ia = 10,5 ma S = 2,2 ma/V Ri = 7,7 kΩ µ = 17 Limiting Values: Ua = 300 V Wa = 2,75 W Ik = 20 ma Ug = -50 V Rg = 1 MΩ Uk/f = 180 V Rk/f = 150 kΩ Capacitances:

"Soeben getestet, Röhre arbeitet bestens - deutlich verbessserter Empfang im Vergleich zu der bisher dort tätigen ECC82." Das ist leider zu wenig Beweis. Man sieht auf Ihrem Foto einen sehr kleinen Abstand Anode zum Gitter-Katodenraum.

The ECC82 is a dual triode vacuum tube with medium gain and low noise characteristics, making it ideal for hi-fi audio equipment and instrument amplification. It is commonly used as a low-noise line amplifier, driver, and phase inverter in push-pull amplifier circuits, and can replace an ECC81/12AX7 for lower gain applications.