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Reddit Reviews
ULT1,3 and 5 is the least bad of the srs XB series (but ult lacks descent bass vs jbl, bose and soundcore on default and boosted settings) ULT mode kills horribly the mids and harsh the highs on the ult series. Miss SONY audio pathway from srs x55,x77 and x88 series on 2015 and 2016 in wich were suprisingly very good sounding portable indoor speakers, miss their tune and very well shaped non boosted midbass of that era. At least their new 2025 bookshelf speakers has the sound style I used to, in their 2014 to 2016 line-up. Bluetooth speakers that were impressive for their tune and size on nwe models of other brands are (for me) bose flex gen 2, anker soundcore 300 and Harman kardon Luna. Actually I use a ruark r2 mk4 audio compact systems that makes me feel like I hear those old sony hi res systems of 10 years age but with new connections and functions.
End of reviews
Rankings by Use Case
Top recommendations from others in the same boat
Best for Audiobooks and podcasts

Top pick
Anker - Select 4 Go
Best for Audiophile-grade sound

Top pick
Harman Kardon - Go + Play 3
Best for Backpacking and hiking

Top pick
LG Electronics - XBOOM Grab
Best for Boating and kayaking

Top pick
soundcore - Boom 3i
Best for Outoor parties and large gatherings

Top pick
JBL - PartyBox 520
Best for Quiet home listening

Top pick
Bose - SoundLink Flex Series





