Your TV's HDMI eARC port might actually be the best choice for your device, even if it's not a sound system, thanks to HDMI 2.1.
While most people connect the Amazon Fire TV Stick to just their TVs, the versatile streaming device can plug into a variety of other devices. Here are some!
Can Emotiva’s BasX TA2+ revive the stereo receiver? With 135W power, HDMI ARC, balanced inputs, and phono support, it targets modern 2 channel systems.