110db SNR discrete buffered preamplifier with Vclip indicator

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i want to build a preamp based on these schematics,i want it simple and at least 110db ,who can help ?
should i use npn only or add pnp sa1015 stage for dual supply
how can i get most of it,no fets please:confused:
 

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  • discrete pre buffer HIFI.gif
    discrete pre buffer HIFI.gif
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  • preamp 110db.png
    preamp 110db.png
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  • LED Audio Clipping Indicator .pdf
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