Half-Speed Masters - are they worth double dipping?

Ditto @ghdprentice. Mostly Japanese from the 70s. Pressing was good and they still sound wow to me on the rare occasions when played. 

I need to recheck my half speed LPs, like CBS mastersound Pink floyd: Wish you were here and Joe Jackson Night and day (mofi). My comments are in the "yes, but..." direction. A mixed bunch. On the other hand, I have generally been very satisfied with 45 rpm LPs.

To your original question

in earlier days half speed mastering did have

some loss in the bass frequencies but now that can be 

manipulated by cutting from a digital file and modern mastering technology

i have the Police Greatest Hits your speaking of and it is very balanced and dynamic . It would be a great choice if your looking for an all in one type record

Good luck Willy-T

Save your money. Buy a nicely restored open RTR. Record your original vinyl. Your recording will sound better than the original album, because of a greater dynamic range with tape.

wfowenmd

Record your original vinyl. Your recording will sound better than the original album, because of a greater dynamic range with tape.

The dynamic range of the tape recording can't possibly be greater than the LP from which the recording was made.