"A true 5.1 system at a fair price, but missing specs suggest it's underpowered."
The '5.1CH SURROUND SOUND' claim is legitimate here. Unlike soundbars that electronically simulate surround sound, this system provides five discrete speakers plus a subwoofer, which is the correct physical configuration for it.
This is for someone in a small-to-mid-sized room upgrading from TV speakers or a basic 2-channel soundbar. If you prioritize genuine surround effects for movies over raw power, and especially if you own a recent Sony BRAVIA TV, this hardware configuration makes sense.
Buyers with large, open-plan living rooms should be wary of the likely modest power output. Anyone needing to connect multiple game consoles or streamers directly to their soundbar should also pause, as the number of HDMI inputs is conspicuously unlisted.