The thread seems to have shifted to -how bad does a recording have to be to make it unpleasant to listen to, irrespective of merit?
A few data points
- for classical orchestral/opera music there's no excuse for any studio album after about 1955 to sound bad.
- I would love to be able to say that my favourite version of the ring was the 1950 Furtwangler la scala cycle but it would be a lie. I find it more or less unlistenable for pleasure but still interesting to hear the line and tempo that furtwangler used. His studio walkure is another story.
- pretty much the same goes for the Bruno Walter 1938 Mahler 9.
-I have a live Karajan Trovatore from Salzburg (somewhat later) which just about make it over the SQ line to the point that I listen to it for pleasure. Ditto the Krauss 1953 ring. The much hyped testament 1955 stereo one sounds scarcely better if at all and doesn't float my boat so much artistically, so I don't bother. I haven't found a modern set good enough to make me forsake Solti, Bohm and Krauss, although if Papanno and Terfel can kidnap Jonas Kaufman and force him to do Siegfried along with a proper Brunnhilde, I might.
-I recently bought a box set of covent garden live performances. about half are from the 1950s and are artistically interesting but sound awful.
-in terms of what really good restoration/. remastering can do, the Robert Johnson centennial edition
https://www.amazon.co.uk/dp/B004OFWLO0/?tag=pinkfishmedia-21
was a revelation. Digital trickery can do wonders (as it was shown to be able to do fr Caruso in a 1970s early 80s Alan Oppenheim MIT lecture I found on itunes).
I reckon about 98% of my collection sounds ok and about 85% of it sounds good or better.