Jj ecc803s datasheets

www.jj-electronic.sk Dimension and connections: www.jj-electronic.com ECC 803 A. F. twin triode with separate cathodes, non microphonic ... JJ ECC803S Datasheet 2005
Another common name for the 12AX7 tube is ECC83 and for premium versions the 7025 and ECC803 audio tubes. Originally, the 12AX7 / ECC83 vacuum tube was introduced to be a superior option for lower noise and microphonics over the 6SL7 tube that was commonly used in the 1940s. Mullard 12AX7 is a good choice for upgrading factory installed 12AX7. TungSol ECC803S GOLD is a short plate design. ECC803S Gold delivers extended response with smooth mids. ECC803S Gold is low in microphony also. This makes ECC803S Gold well suited for phono application. 12AX7 and the Gain. A 12AX7 is a high gain tube.

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ECC81 is 12AT7 medium gain pre-amplifying double triode. Can be also used as replacement for 12AX7 in many applications. Very smooth and warm sound. Very low microphonic. Good for phase inverters or reverb drivers.
The JJ ECC83-S tube has several improvements in its construction from the old ECC83 version. From our review of this tube: "This tube sports a different plate design than found in most 12AX7's. When you look at them you can't help but think that they must be rugged and good for the musician on the road. It has a bold character with a fair amount of harmonic density but remains very open sounding whether played clean or overdriven. The ECC83MG is a little more polite than the JJ ECC83S which is pretty aggressive. Tonally it fits very nicely right between the JJ ECC83S and JJ ECC803S.

JJ-E83CC . The curves are not really bad, but do not compare to the NOS TESLA. Note, the JJ E83CC is a mechanical copy of the TESLA E83C. So what we see here, we have a NEW production JJ, and the curves are less nice as an NOS TESLA that was unused in the box for 40 years.
JJ ECC803s would be an example. Higher gain tubes dont have much to do with 'metal' by the way. You're not going to get a substantial increase, unless you're going from a significantly lower gain tube like a AT7 or something. The Gold Pin JJ ECC803S is designed to be a premium version of the long plate JJ ECC803S. They are also available with matched and or current balanced triodes. The Gold Pin tubes have a very open and lush tone. When overdriven they have a very smooth and singing character that's less gritty and less aggressive than the original versions.

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Then it is up to you if that is worth 150 dollar for a NOS Tesla, 350 dollar for a used TFK ECC803S, or even 1000 Dollar for a NOS TFK. With NOS TFK I recommend you to buy only such that DC parametric tested.
It has a bold character with a fair amount of harmonic density but remains very open sounding whether played clean or overdriven. The ECC83MG is a little more polite than the JJ ECC83S which is pretty aggressive. Tonally it fits very nicely right between the JJ ECC83S and JJ ECC803S. This pages describes the ECC803S tube, and about the confusion with this tube part numbering system. Click here / this page was moved (Last updated: 02-Jan-2017 19:43 ) www.jj-electronic.sk 9 ECC83 S R. F. DOUBLETRIODE Base: NOVAL U f = 6,3/12,6 V I f = ca.300/150 mA Typical characteristic: U a = 250 V U g = -2 V I a = 1,2 mA S = 1,6 mA/V R i = 62,5 kΩ µ =100 Limiting values: U a = 300 V W a =1 W I k mA=8 U g = -50 V R g = 2,2 MΩ U k/f = 180 V R k/f = 150 kΩ Capacitances: system I. system II. c g/k= 1,6 1,6 pF c a= 0,33 0,33 pF c g/a= 1,7 1,7 pF Dimension