https://www.cnet.com/news/heres-a-pint-size-speaker-with-a-big-sound/

Vanatoo Transparent Zero speakers.

One of the two Transparent Zeros hosts an analog 3.5mm stereo input, an optical digital input, a USB port and an RCA subwoofer output. That speaker connects to the other Transparent Zero speaker with a cable. Wireless fans will appreciate aptX Bluetooth, so the Transparent Zero is equipped to serve on a desktop, stereo music system or a stereo home theater. The speakers are beautifully built, and they're sold with a three-year warranty.