What is the correct pronunciation of "OF"?
...it has unvoiced /f/ sound at the end or a voiced /v/ sound at the end??
Note that the vowels are not the same.
I wrote "of" above (of and above rime). In off, we have either /af/ (AmE) or /ɒf/ (BrE and most Commonwealth areas.)
Perhaps in some BrE dialects, I know only 2 of the many. I haven't heard anything other than /ʌv/ in RP or AmE.
Most commonly heard are: ə,əv, əf
ɑv, ɑf are heard when rhythm demands. JC Wells call it buttressing.