How to share your music
Short answer
Listen together with a friend. Connect your Major IV to an audio device via Bluetooth, then connect the 3.5 mm jack of the other headphones to the 3.5 mm AUX port.
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Let a friend connect their headphones to the 3.5 mm AUX port on your Major IV and listen together:
Ensure that Major IV is connected to your audio device via Bluetooth.
Connect the 3.5 mm jack of the other headphones to the 3.5 mm AUX port on Major IV.