Looking for a case for AKG K121S? Headcase shows 4 evidence-backed options. Top pick: Shield Headphones Case Compatible with Audio-Technica ATH-R30x, ATH-R50x, ATH-AD900X, ATH-AD500X, ATH-R70X, Replacement Hard Shell Travel Carrying Bag with Cable Storage (Black) (Listed fit). 4 cases are seller-listed by name.
Evidence refreshed July 2026
Seller-listed
4
Named by a case seller
Evidence-backed
4
Recorded fit sources
Listed by Geekria as compatible with this headphone.
Listed by Geekria as compatible with this headphone.
Listed by Geekria as compatible with this headphone.
Listed by Geekria as compatible with this headphone.
Shield Headphones Case Compatible with Audio-Technica ATH-R30x, ATH-R50x, ATH-AD900X, ATH-AD500X, ATH-R70X, Replacement Hard Shell Travel Carrying Bag with Cable Storage (Black) has the strongest recorded evidence (Listed fit). Listed by Geekria as compatible with this headphone.
Headcase lists 4 evidence-backed carrying cases for AKG K121S. 4 are seller-listed by name.
Each case shown here has traceable fit evidence — for example a seller naming AKG K121S on a case listing. Headcase does not publish dimensional guesses or unverified rows. Read the fitment methodology.
Headcase evidence index