DSD dubs to BD: would this work?

[Teazle]

As the stock of available SACDs continues to dwindle, can anyone tell me if there’s anything screwy about the following idea:

Suppose I unwrap a brand new vinyl record, put it on a turntable and run the stereo analogue outputs to some kind of audio capture card in a PC. I quickly check my levels and with the right recording software make a real-time DSD (or perhaps 24/192 PCM) dub of the record on its very first play. I then back the data up on a BD-R which I can play back on the same PC at any time.

1) Playing back this dub should sound much better than an ordinary CD of the same music, right? (The file size would be much bigger than a CD.)

2) If DSD performs as advertised the digital dub should sound virtually the same as the vinyl, right? Also, since the digital recording won’t degrade, after a certain number of spins of the LP that particular piece of vinyl will actually sound worse than the dub.

3) Are there any technical obstacles to doing this -- e.g. would this require an insanely powerful or expensive PC? Is what I’m describing – home-brewed DSD capture – something unusually arcane? (Maybe the software costs thousands or needs dedicated hardware or something? Or would it require specialist expertise to use – something more than checking levels and EQ and hitting the red “Record” button?)

In the ancient time I would make a copy to cassette or 10” open reel because I was paranoid about records wearing out, but the tape would wear out, and nowadays I just can’t deal with the dust and scratches on vinyl any more. Thanks in advance for comments.