Power needed
47–755 W
per channel, into 4 ohms
To hit 95 dB peaks at 3 m from a pair of KEF R8 Meta, you need at least 47 W a channel. Anything from about 95 W to 755 W a channel is comfortable; past that, more watts stop buying you anything.
Show the working
- 95 dB target at the seat
- +4.8 dB for 3.0 m of distance
- -3 dB for a stereo pair
- -80.0 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 85 dB, used as 80.0 dB per watt.
Marantz Model 10 with the KEF R8 Meta
Excellent match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (250 W to 500 W) - a stiff supply that copes with hard loads.
Full Marantz Model 10 specs
·
Clear this amp
178 integrated amplifiers suit the KEF R8 Meta
Also show the 76 we do not recommend
1
Excellent match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (300 W to 580 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
2
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power rises usefully into 4 ohms (300 W to 450 W).
Balanced against the price of the speakers.
3
Excellent match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 755 W.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (125 W to 250 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
4
Excellent match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 755 W.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (135 W to 250 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
5
Excellent match
8 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
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.
6
Excellent match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (300 W to 550 W) - a stiff supply that copes with hard loads.
Costs more than the speakers - worth it only if you plan to upgrade them later.
7
Good match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 755 W.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power rises usefully into 4 ohms (150 W to 260 W).
Balanced against the price of the speakers.
8
Good match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 755 W.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power rises usefully into 4 ohms (150 W to 250 W).
Balanced against the price of the speakers.
9
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 (200 W to 400 W) - a stiff supply that copes with hard loads.
Costs more than the speakers - worth it only if you plan to upgrade them later.
10
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power rises usefully into 4 ohms (200 W to 350 W).
Costs more than the speakers - worth it only if you plan to upgrade them later.
11
Excellent match
6 dB of headroom - enough, but at the modest end for this speaker, which takes up to 755 W.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (100 W to 200 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
12
Excellent match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (200 W to 380 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
13
Excellent match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 755 W.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
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.
14
Excellent match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (250 W to 500 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
15
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (200 W to 400 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
16
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (200 W to 380 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
17
Good match
6 dB of headroom - enough, but at the modest end for this speaker, which takes up to 755 W.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (100 W to 200 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
18
Good match
6 dB of headroom - enough, but at the modest end for this speaker, which takes up to 755 W.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (100 W to 200 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
19
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power rises usefully into 4 ohms (200 W to 350 W).
Costs more than the speakers - worth it only if you plan to upgrade them later.
20
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power rises usefully into 4 ohms (220 W to 340 W).
Costs more than the speakers - worth it only if you plan to upgrade them later.
Showing the best 20 of 178. Narrow it with the price range below, or a different budget split.
43 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
10 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.
Costs more than the speakers - worth it only if you plan to upgrade them later.
2
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.
Power rises usefully into 4 ohms (200 W to 320 W).
Balanced against the price of the speakers.
3
Excellent match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (210 W to 420 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
4
Good match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 755 W.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power rises usefully into 4 ohms (150 W to 225 W).
Balanced against the price of the speakers.
5
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power rises usefully into 4 ohms (250 W to 390 W).
Costs more than the speakers - worth it only if you plan to upgrade them later.
6
Good 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 (250 W to 500 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
7
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 4 ohm speaker.
Power nearly doubles into 4 ohms (200 W to 400 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
8
Good match
7 dB of headroom - enough, but at the modest end for this speaker, which takes up to 755 W.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
Power rises usefully into 4 ohms (160 W to 240 W).
Balanced against the price of the speakers.
Were these amplifier recommendations useful?
It helps us tune the matching, and we read every comment.
Thanks. Anything you would add?
Optional, and it goes straight to the person who maintains this page.
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 R8 Meta specs.
More tools
💰
System Budget Planner
Split a total across speakers, amplifier and subwoofer, then fill every slot with real models that work together.
📏️Will It Fit? Speaker Size Finder
Measure your shelf or alcove and see every speaker that goes in it, with a warning where a rear port needs more room than the box does.
🔌Speaker Wire Gauge Calculator
How thick your speaker cable needs to be for the run length and impedance, and what you lose if it is too thin.
⚡Speaker Impedance Calculator
Wire two or more speakers in series or parallel and see the load your amplifier actually sees.
📏Speaker Placement Calculator
A plan view of your room: speaker spacing, wall distances, where the bass cancels and where the first reflection lands.
🎸Subwoofer Crossover Calculator
Where to set the crossover between your speakers and a subwoofer, and which reason is driving the answer.
🎧Speaker Test Tones
Channel check, polarity, bass extension and frequency sweeps, generated in your browser. Nothing to download.
🏠Room Mode Calculator
The frequencies your room reinforces and cancels, where they pile up, and what to move first.
📣SPL & Amplifier Power Calculator
How loud a speaker plays for a given power at a given distance - or how many watts you need for a target level.