Record store knowing classical quartet with energy (7)

I believe the answer is:

archive

I'm a little stuck... Click here to teach me more about this clue!

'record store' is the definition.
(where records are stored)

'knowing classical quartet with energy' is the wordplay.
'knowing' becomes 'arch' (I've seen this before).
'classical quartet' becomes 'iv' (Roman numerals for four. I am not sure about the 'classical' bit.).
'with' means one lot of letters go next to another.
'energy' becomes 'e' (physics symbol as in E=mcv).
'arch'+'iv'+'e'='ARCHIVE'

Can you help me to learn more?

(Other definitions for archive that I've seen before include "Record, annal" , "Collection of historical records" , "Public records store" , "Document or record collection" , "Depository containing historical records" .)

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.