HiFi SPECS

A/B comparison · Speakers

Acoustic Energy 301 speakers vs KEF LS50: which to buy?

Specs from both manufacturer datasheets Updated Sep 9, 2026

Acoustic Energy 301 speakers vs KEF LS50 in brief

  • Spec rows: Acoustic Energy 301 speakers wins 0, KEF LS50 wins 1, 8 tied or not compared, of 9 rows.
  • Our scores: Acoustic Energy 301 speakers 8.9/10, KEF LS50 9.2/10.
  • Acoustic Energy 301 speakers wins: bass response (8 vs 7.5).
  • KEF LS50 wins: sound quality (9.6 vs 9), midrange clarity (9.6 vs 9.2), treble detail (9.7 vs 8.8), design (9.3 vs 8.7).
  • Tied: value for money (9.5 each).
  • Who should buy which: Pick the Acoustic Energy 301 speakers for bass response. Pick the KEF LS50 if sound quality, midrange clarity, treble detail and design matter most.

The short answer

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.

CH A Acoustic Energy 301

Acoustic Energy 301 speakers

Channel A · Bookshelf · 2013
VS
CH B KEF LS50

KEF LS50

Channel B · Bookshelf · 2013
Acoustic Energy 301 speakers KEF LS50
20 Hz 100 1k 10k 20k
8.9/10Acoustic Energy 9.2/10KEF

Rows won, of 9 compared Acoustic Energy 0 · KEF 1 · tied or not compared 8

Datasheet · Side by side

Spec by spec

Built from both structured spec sheets. The delta chip sits on the winning side; rows with no defensible winner carry no chip.

Sound & drivers

2-way Configuration 2-way
1x 1.13" Tweeter + 1x 4.33" Woofer Drivers 1x 1" Tweeter + 1x 5.25" Mid-woofer
48 Hz to 32 kHz ±3 dB Frequency responseReference not published 79 Hz to 28 kHz 47 Hz to 45 kHz extended
Ported (Bass Reflex) Enclosure Ported (Bass Reflex)

Power, electrical, physical

87 dB SensitivityReference not published 85 dB
8 Ω Impedance 8 Ω
25 to 150 W Amp range 25 to 100 W
300 mm · 12.1 lb Height · weight 302 mm
3 yr Warranty 5 yr +2 yr

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

How it scored, paired

6 aspects, two channels

Acoustic Energy 301 speakers KEF LS50
Sound quality 9.0 9.6
Bass response 8.0 7.5
Midrange clarity 9.2 9.6
Treble detail 8.8 9.7
Design 8.7 9.3
Value for money 9.5 9.5

Each aspect is scored 0 to 10 in our reviews, against the rest of the class.

Verdict

Which should you buy?

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

Where they stand on price

Acoustic Energy 301 speakers
Availability last checked Sep 9, 2026
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

Availability last checked Sep 9, 2026

We do not show live prices; price tiers are our editorial categories. As an Amazon Associate, HiFi Specs earns from qualifying purchases. Our scores and comparisons are never influenced by affiliate partners.