> most real world analog sources rarely achieve a S/N greater than 90dB
Huh? I paid $3,999.97 for this 24-bit A/D. For that price, ALL my signals better pop out with 144dB S/N ratio, even if there's a major highway outside the concert hall windows.
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Yes, I know full well what the acoustic S/N ratio is for most of my recording situations. Often it does not challenge 7.5ips tape.
I must admit that I have not heard mike or preamp noise in a long time. (I do recall some 558+4R PA mike inputs that roared, and a BiAmp that never quite got down to no-noise.)
So my low-noise mutterings were quite pointless, especially since there's no FET in it. Sorry to have wasted everybody's time.