- Model: Beat-Sonic SLA-41A - Application: Car audio adapter Thank you for viewing. This is a Beat-Sonic Super Live Sound Adapter. The adapter body is in good condition. The wiring shows signs of electro-tap use and cuts. Compatible vehicles are the early model JZS15 series Crown (Royal/Majesta). Since wiring modifications have been made since the item was purchased used, please consider it as a junk item. I am selling this because after I installed it in my Crown, it turned out to be a flood-damaged car, so the Super Live Sound System was no longer relevant. Therefore, I have not been able to confirm its operational status.