Thanks, but I didn't want to get into an analogue vs digital debate. For me listening to vinyl is a total experience that goes beyond whether or not there's an occasional crackle or pop. I'm not seeking perfection, if I were at a concert and someone in the audience coughed during a quiet passage it wouldn't ruin the performance for me. I've been listening to and collecting vinyl since the early 60s, I started out with a handful of 45s and a Dansette record player. Compared to my set up today it was a crude sound but still really pleasurable. Clarity, detail and absence of surface noise isn't always a priority for me. I have a lot of old albums, both mono and stereo, picked up in charity shops and record fairs that have seen better days but the music in the grooves still sounds great to my ears. I do listen to CDs as well, I have about 2000, and a decent CD player, and I occasionally stream, but I prefer the vinyl experience. I asked the question about half-speed masters because I've never heard one and was trying to understand what was different about them. Thanks for all the comments, it's been really useful.