Gulikit Route+ Bluetooth Audio Transmitter Adapter for Nintendo Switch for $29.99 after code M4TDOPEH and clipping the $5 off coupon. Free shipping for amazon users.
About the product:
1) aptX Low Latency, Real-time Audio Sync
2) No battery needed
3)Support USB PD passthrough charging to Switch
4)No Driver needed, fast pair
https://www.amazon.com/dp/B07HRM9RVC