How comes most record companies aren't retroactively digitizing their multitrack tapes?

[par4ken]

What ADC do you use?

My current turntable (PS-HX500) has a built-in dsd 128 ADC.

I use a Digigram VX822HR sound card (PCM 192 Khz).

Ariston Audio RD-40 Turntable, Decca London International Tonearm, Audio-Technica AT-ART9XA cartridge. Akai MT-200 step-up transformer.