Excellent product that's *almost* worth what Sonos asks for it, but where else ya gonna go?
The Sonos Sub is a very well designed and has excellent performance in combination with the Sonos One speaker. Don't let anyone tell you that it doesn't help that much and that the bass from any Sonos speakers is adequate. This speaker supplies the fundamental bottom octave of any musical source and is absolutely required in home theater applications. You will not so much be able to hear that bass, but you will *feel* it. I can't speak for the soundbars or the Play 3 because I only own the Ones, but I know audio and I know that the soundbars and the Play 3 cannot play fundamentals below 50Hz. Without that, you have to imagine special effects in movies and real bass in music. With the Sub, you can actually feel those effects and the depth of orchestras - much less jazz and rock. You don't have to imagine anything. I measured the Sub and it does play down into the 20Hz range solidly. I was quite surprised in that respect.
Still, the value is a problem. $699 from Sonos direct it a LOT of scratch when better subs cost $400-500. BUT, TruePlay and the Sonos integration system balance the equation. Another subwoofer and the Sonos Connect (not to mention having to configure the subwoofer) to make it all work would bring the price above what Sonos is charging for the Sub alone - and Sonos knows that. Hence, they can get away with charging whatever the market will bear. The Sub, in my book, is worth $500 and nowhere near $700. But, Sonos can get away with it.
And that's why I got mine on eBay for $75 less (with no tax or shipping) than retail... :)
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