A well rated hdmi capture card with usb 3.0 interface. This one has the loop output so you can see what you are recording. Best price on camelx3 was $68. I just ordered one. 5hrs 20 minutes remaining on deal at time of posting. Make sure you click the 10% coupon.
Sites says:
USB3.0 Capture Cards: 4K HDMI to USB3.0 video capture card, easy to carry, superior performance, good compatibility, simple installation, and powerful.
HDMI Game Capture: This game video capture device is stylish, compact and standardized. The device is easy to install and carry, making it ideal for live broadcasts, conference rooms, video recording, etc.
1080p 60 FPS: Record video signal up to 1080p/60Hz, HDMI input supports 4K/30Hz.
HDMI Loop-out: There is no delay when using the HDMI loop-out port. When you are playing a game live, the HDMI loop-out port is very useful.
Compatible: compatible with Windows 7, 8, 8.1, 10 or later, Linux OS, Mac OS operating system.
This looks like exactly what I've been waiting for. Small, good quality, and with headphone output.
Only other thing I'd like is for it to be totally USB-C, with no HDMI. But I'm not sure there are any devices like that yet.