A/B comparison · Speakers
Specs from both manufacturer datasheets Updated Sep 9, 2026
For most listeners I would take the KEF LS50. It reads further into a recording than the Acoustic Energy 301 does, and the longer warranty cover only sweetens the choice. Buy the Acoustic Energy 301 if you want the fuller low end of the two. It takes the bass honours by a clear margin, and that punch matters if you listen to rock or electronic material in a small to medium room with no subwoofer under the system.
Channel A · Bookshelf · 2013
Channel B · Bookshelf · 2013
Rows won, of 9 compared Acoustic Energy 0 · KEF 1 · tied or not compared 8
Datasheet · Side by side
Built from both structured spec sheets. The delta chip sits on the winning side; rows with no defensible winner carry no chip.
A higher sensitivity figure means the same loudness from less amplifier power. Values come from each manufacturer datasheet.
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From our reviews
Each aspect is scored 0 to 10 in our reviews, against the rest of the class.
Verdict
For most listeners I would take the KEF LS50. It reads further into a recording than the Acoustic Energy 301 does, and the longer warranty cover only sweetens the choice.
Buy the Acoustic Energy 301 if you want the fuller low end of the two. It takes the bass honours by a clear margin, and that punch matters if you listen to rock or electronic material in a small to medium room with no subwoofer under the system. It is also the friendlier partner for a modest amplifier at 87 dB sensitivity with headroom up to 150 W, and it reaches down to 48 Hz on the published response. Setup takes minutes, it handles films and gaming as happily as music, and its value scoring sits level with its rival here rather than below it. In a big room it will run out of weight, so size the space before you commit.
Buy the KEF LS50 if resolution is the thing you care about. It is clearly the more revealing speaker overall, well ahead on treble detail and narrowly ahead in the midrange, so voices and wind instruments arrive with a presence the 301 does not quite match, and it leads on design as well. The five year warranty runs two years longer. The trade sits at the bottom of the range: it gives up the bass comparison, its amp range tops out at 100 W, and anyone chasing real weight under film soundtracks will want a subwoofer beneath it. Give it a clean amplifier and some time on placement and toe-in and it repays that care more than anything else on this page.
Availability
Acoustic Energy 301 speakers
KEF LS50
The KEF LS50 isn't sold new any more. The closest current model is the KEF LS50 Meta.
Why this one: Same LS50 line, same bookshelf size and specs, the direct successor to the original LS50
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