HiFi SPECS

A/B comparison · Speakers

KEF LS50 vs Q Acoustics M20

Specs from both manufacturer datasheets Updated May 17, 2024

KEF LS50 vs Q Acoustics M20 in brief

  • Spec rows: KEF LS50 wins 1, Q Acoustics M20 wins 0, 10 tied or not compared, of 11 rows.
  • Our scores: KEF LS50 9.2/10, Q Acoustics M20 8.6/10.
  • KEF LS50 wins: sound quality (9.6 vs 9), midrange clarity (9.6 vs 9.3), treble detail (9.7 vs 9.2), design (9.3 vs 8), value for money (9.5 vs 8.8).
  • Tied: bass response (7.5 each).
  • Who should buy which: The KEF LS50 wins every aspect where the two differ.
CH A KEF LS50

KEF LS50

Channel A · Bookshelf · 2013
VS
CH B Q Acoustics M20

Q Acoustics M20

Channel B · Powered Bookshelf · 2021

About $729 a pair

KEF LS50 Q Acoustics M20
20 Hz 100 1k 10k 20k
9.2/10KEF 8.6/10Q Acoustics

Rows won, of 11 compared KEF 1 · Q Acoustics 0 · tied or not compared 10

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" Tweeter + 1x 5.25" Mid-woofer Drivers 1x 0.75" Tweeter + 1x 5" Mid-woofer
79 Hz to 28 kHz 47 Hz to 45 kHz extended Frequency responseReference not published 55 Hz to 22 kHz
Not published Max SPL 105 dB
Ported (Bass Reflex) Enclosure Ported (Bass Reflex)
Not published Port tuning 49 Hz

Power, electrical, physical

85 dB SensitivityReference not published 88 dB
8 Ω Impedance 6 Ω
25 to 100 W Amp range 25 to 75 W
302 mm Height · weight 279 mm · 24.3 lb Checked against the maker's own sheet, Sep 2026 Source
5 yr +3 yr Warranty 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

KEF LS50 Q Acoustics M20
Sound quality 9.6 9.0
Bass response 7.5 7.5
Midrange clarity 9.6 9.3
Treble detail 9.7 9.2
Design 9.3 8.0
Value for money 9.5 8.8

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

Availability

Where they stand on price

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 May 17, 2024
Q Acoustics M20
Availability last checked May 17, 2024

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