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# 4 The other major advantage of the E810F triode is the very low internal resistance (less than 1 Kohm), which has polarized generously, allowing you to push the output energy . The
E810F triode configured and the processor configured 5K/600 ohms, providing an overall gain of about 25 dB and this is the weak point.

Group (E810F / Tango NP-206 / 600-ohm LCR RIAA) is well stocked with excellent material for both type and quality. Certainly is a splendid example of how to implement a pilot of a transformer LCR RIAA bridged T.
With a block like that, then it is relatively easy to complete a phono able to dry the equipment cost disproportionately. Although, to make the most sonically, this group must work with signals much wider.

summary.
The use of the processor is particularly suited to bring the impedance to 600 ohms.
But it must be of stratospheric, why not make sense to drive an RIAA LCR not something to its height and, above all because in a phono every imperfection is magnified.
remains the most delicate aspect of gain reduction, in an overwhelming burden on the overall strategy: to gain in the phono go on, so on, and quickly, there is already the RIAA that requires a down of 20 dB, there is no need to add more.

fact, if we reconsider for a moment the example above, we see that adding to the 25 dB gain of the first stage, the loss of 20 dB of RIAA, we leave it with a gain of 5 dB.
No good.
We would look to the next stage with a sign flapped so we need to find most of the problems you have in designing the first stage.

With this strategy, given that they did design a RIAA phono with conventional RC one with the balls, there is a danger in comparison to take the pay, despite the use of better materials and much more expensive.