Magazine produced by group in class (8)
I believe the answer is:
cassette
'magazine' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'group in class' is the wordplay.
'group' becomes 'set' (both can mean a collection).
'in' is an insertion indicator.
'class' becomes 'caste' (type of social class).
'set' going inside 'caste' is 'CASSETTE'.
'produced by' is the link.
Can you help me to learn more?
(Other definitions for cassette that I've seen before include "sealed plastic container" , "sound equipment" , "Spool of tape" , "Music player" , "Test case (anag.)" .)