Cheap and good op-amp phono preampl. with zero noise

[audiodesign]

Look here for the project details

Claudio Hi-end Phono

 

[Osvaldo de Banfield]

Ja ja ja, the only way to have "zero noise" is at 0°K and a very far point from earth.

Ridiculous.

 

[audiodesign]

The use of these op-amp with very low value resistors and the virtual battery operation allow zero noise.

 

[DF96]

I assume by "zero noise" you don't actually mean zero noise.

 

[audiodesign]

true,
tnk

 

[lcsaszar]

It is easy: create negative noise, add it to positive noise, they cancel and voilá: you get zero noise

 

[AndrewT]

zero noise = noise my Grand Ma can't hear from the other side of the house.

 

[raul_77]

Hi,

Well, the low level in the measuers are -80dB, very good for a phono preamp but no 'zero noise'. Yes, really very low noise.

But, for me, the most interesting part are the power supply... that lacks the values of the components.

Have you the complete values of the power supply? Please, can you post here?

Happy days

 

[audiodesign]

Here the power supply components

 

[analog_sa]

If the purpose of this pre is merely to feed a digital preamp, i cannot help but wonder: can the Tact not take care of the RIAA? Then you could get away with just some linear gain and even less noise 🙂