Power needed
38–400 W
per channel, into 4 ohms
To hit 95 dB peaks at 3 m from a pair of KEF Blade Two Meta, you need at least 38 W a channel. More than 400 W is wasted here — that is all KEF rates the speaker to take.
Show the working
- 95 dB target at the seat
- +4.8 dB for 3.0 m of distance
- -3 dB for a stereo pair
- -81.0 dB effective sensitivity
- 3.0 dB taken off to convert the 4 ohm 2.83V rating to dB per watt
- 2 dB allowed for optimistic published sensitivity
- Published sensitivity 86 dB, used as 81.0 dB per watt.
Hegel H400 with the KEF Blade Two Meta
Good match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
No 4 ohm power rating on file. On a 4 ohm speaker dipping to 3.2 that is the figure that matters, so this one is unproven on the load.
Full Hegel H400 specs
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Clear this amp
184 integrated amplifiers suit the KEF Blade Two Meta
Also show the 52 we do not recommend
1
Excellent match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (150 W to 300 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
2
Excellent match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (125 W to 250 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
3
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
No 4 ohm power rating on file. On a 4 ohm speaker dipping to 3.2 that is the figure that matters, so this one is unproven on the load.
Sensible value pick against these speakers.
4
Excellent match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (125 W to 250 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
5
Excellent match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (200 W to 400 W) - a stiff supply that copes with hard loads.
Well below the speakers - leaves money on the table, but nothing wrong with it.
6
Workable with care
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power nearly doubles into 4 ohms (250 W to 500 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
7
Workable with care
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power rises usefully into 4 ohms (200 W to 300 W).
Sensible value pick against these speakers.
8
Workable with care
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power nearly doubles into 4 ohms (150 W to 300 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
9
Workable with care
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power nearly doubles into 4 ohms (200 W to 400 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
10
Workable with care
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power nearly doubles into 4 ohms (125 W to 250 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
11
Workable with care
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power nearly doubles into 4 ohms (200 W to 380 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
12
Good match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
No 4 ohm power rating on file. On a 4 ohm speaker dipping to 3.2 that is the figure that matters, so this one is unproven on the load.
Sensible value pick against these speakers.
13
Good match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 400 W.
Rated down to 3 ohms, comfortable with a 4 ohm speaker that dips to 3.2.
Power nearly doubles into 4 ohms (100 W to 200 W) - a stiff supply that copes with hard loads.
Well below the speakers - leaves money on the table, but nothing wrong with it.
14
Workable with care
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power nearly doubles into 4 ohms (200 W to 380 W) - a stiff supply that copes with hard loads.
Well below the speakers - leaves money on the table, but nothing wrong with it.
15
Workable with care
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power nearly doubles into 4 ohms (110 W to 220 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
16
Workable with care
12 dB of headroom, far more than needed. No harm in it.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power rises usefully into 4 ohms (390 W to 600 W).
Sensible value pick against these speakers.
17
Workable with care
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power rises usefully into 4 ohms (235 W to 350 W).
Sensible value pick against these speakers.
18
Workable with care
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power rises usefully into 4 ohms (150 W to 250 W).
Sensible value pick against these speakers.
19
Workable with care
12 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power nearly doubles into 4 ohms (300 W to 550 W) - a stiff supply that copes with hard loads.
Well below the speakers - leaves money on the table, but nothing wrong with it.
20
Workable with care
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power rises usefully into 4 ohms (185 W to 275 W).
Sensible value pick against these speakers.
Showing the best 20 of 184. Narrow it with the price range below, or a different budget split.
45 power amplifiers that would also drive them
Listed separately because they are not a complete system: a power amplifier has no volume control and no inputs to speak of, so you need a preamplifier or a streaming preamp as well. Worth it if you already own one, or if you want to buy the two halves separately.
1
Excellent match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (250 W to 500 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
2
Excellent match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (150 W to 300 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
3
Workable with care
13 dB of headroom, far more than needed. No harm in it. Well above the 400 W the maker rates the speaker for, so keep an eye on the volume knob.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (400 W to 800 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
4
Excellent match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (175 W to 345 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
5
Workable with care
14 dB of headroom, far more than needed. No harm in it. Well above the 400 W the maker rates the speaker for, so keep an eye on the volume knob.
Rated down to 1 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (450 W to 850 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
6
Excellent match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 1 ohms - stable into anything this speaker will throw at it.
Power nearly doubles into 4 ohms (250 W to 450 W) - a stiff supply that copes with hard loads.
Well below the speakers - leaves money on the table, but nothing wrong with it.
7
Workable with care
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated to 4 ohms, but this speaker dips to 3.2. Fine at sane volume, tight if you push it hard.
Power nearly doubles into 4 ohms (200 W to 400 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
8
Workable with care
15 dB of headroom, far more than needed. No harm in it. Well above the 400 W the maker rates the speaker for, so keep an eye on the volume knob.
Rated down to 1 ohms - stable into anything this speaker will throw at it.
No 4 ohm power rating on file. On a 4 ohm speaker dipping to 3.2 that is the figure that matters, so this one is unproven on the load.
Balanced against the price of the speakers.
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It helps us tune the matching, and we read every comment.
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Thanks — noted.
Sensitivity and impedance figures are the manufacturer's own. We read sensitivity as dB at 2.83 V/1 m and take 2 dB off it, because published figures run high. Treat the result as a well-founded starting point, not a measurement. Full KEF Blade Two Meta specs.