Does the Skywave F40 need a receiver?

No. It is a self-contained soundbar with its own amplification and an included subwoofer. You connect it to the TV and it handles Dolby Atmos decoding itself.

Is the subwoofer wired or wireless?

The subwoofer is a separate unit paired with the bar, so you place it near a power outlet rather than next to the TV. Check the connection type for your unit before buying.

Will it give true overhead sound?

It decodes Dolby Atmos and creates height effects through processing, not up-firing drivers. Expect a wider, taller front stage rather than sound from directly above.

Can I stream music to it?

Yes. Bluetooth 5.4 lets you pair a phone or tablet and play music through the bar and subwoofer.

How does it compare with pricier Atmos soundbars?

It covers Atmos decoding, a subwoofer and app control at a lower tier. Costlier bars add room calibration, more HDMI inputs and more refined height and surround processing.