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Oliver, how does the EF804S noise compare to a good 12AX7A? I think a preamp made with the 804 would be much more quiet maybe? I know that the 804 is a pentode and the AX is triode, so kind of like comparing apples and oranges... Thanks for all you answers by the way. |
Level wrote on Tue, 11 January 2005 23:30 |
I like to see investigated the use of the 6H30P tube for mic pre amp purposes. |
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I use the tube 5963 (de. of 12AU7) |
Level wrote on Wed, 12 January 2005 01:50 |
Me Not necessarly. The 6h30P and 6h30pi is so low noise, you can design a circuit around it for appilactions that are beyond your wildest imagination or mine. Gain and sheilding for Micro levels. |
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You want output, look to the 6C33C |
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Actually, depending on vintage, some 5963's are equal or even not as equal as the AU7. |
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Cool thing about valves, you can design around the value to obtain a goal. |
Oliver Archut wrote on Wed, 12 January 2005 22:29 |
(a short side info: the most wanted tube on this globe is the VF14, a pentode followed by a 300B, a triode; that should say it all) |
Oliver Archut wrote on Fri, 14 January 2005 20:14 |
I do not know what you mean with internal NFB in a triode, could you clarify that please. |