Sound Advice…..in Castle Arcade closed by the very early eighties, this had a more hippyish vibe and female staff were encouraged to play Fleetwood Mac albums and engage with the (mostly) young male customers which made for a more genteel shopping experience than Spillers. Had a basement which stocked Athena posters and second hand trade in’s of mostly Joan Baez and Melanie albums. Also had the coolest of the inimitable 12″ carrier bags with a black and white art noveau design.
Spent large parts oh the early 70s (and all my pocket money) in there, buying Prog rock albums.
Original copies of the "Spunk" bootleg available under the counter I recall.
I used to work in Sound Advice
Remember passing up on Joy Divisions Ideal for Living EP in the Punk box for a Patrick Fitzgerald EP.........seen how much it sells for now!!!!!. Another great shop sorely missed
I remember it well 
I think they had a black and silver bag too with a sort of Rennie Mackintosh design
Bought Queen Jazz in that shop
I remember getting Tom Petty and the Heartbreakers American Girl on 12'' single plus lots of other stuff there. There was so many great record shops in Cardiff back in the day
