OK, I know what's TPA3116D2. TI made a decent-sounding little stereo amp-on-chip (the assembled boards are available on Amazon or on PartsExpress) https://www.amazon.com/tpa3116d2/s?k=tpa3116d2
But what's the MVS JRK8280? Does anybody know? Is this some rebrand of Sanyo STK8280?
brainwaveIt is made by Mountain View Silicon in Shanghai. Great little amps we've tested extensively and in this speaker it combines beautifully with the TI.