Power needed
50–65 W
per channel, into 6 ohms
To hit 95 dB peaks at 3 m from a pair of Harbeth P3ESR XD2, you need at least 50 W a channel.
No amplifier will get you there.
Harbeth rates the
Harbeth P3ESR XD2 to
50 W, and it needs
50 W to reach
95 dB at this distance. Listen a step quieter, sit
closer, or add a subwoofer to take the bass load off it - that is where most of
the power goes.
Show the working
- 95 dB target at the seat
- +4.8 dB for 3.0 m of distance
- -3 dB for a stereo pair
- -79.8 dB effective sensitivity
- 1.2 dB taken off to convert the 6 ohm 2.83V rating to dB per watt
- 2 dB allowed for optimistic published sensitivity
- Published sensitivity 83 dB, used as 79.8 dB per watt.
Hegel H150 with the Harbeth P3ESR XD2
Workable with care
Just barely enough (2 dB of headroom). Fine at normal volume, no reserve for peaks.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
No 4 ohm power rating on file, so we cannot judge current delivery.
Full Hegel H150 specs
·
Clear this amp
168 integrated amplifiers suit the Harbeth P3ESR XD2
Also show the 85 we do not recommend
1
Workable with care
Just barely enough (2 dB of headroom). Fine at normal volume, no reserve for peaks.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power nearly doubles into 4 ohms (50 W to 100 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
2
Excellent match
3 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power nearly doubles into 4 ohms (70 W to 140 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
3
Excellent match
4 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power nearly doubles into 4 ohms (75 W to 150 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
4
Excellent match
4 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power nearly doubles into 4 ohms (80 W to 150 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
5
Excellent match
4 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power nearly doubles into 4 ohms (80 W to 160 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
6
Excellent match
3 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power nearly doubles into 4 ohms (70 W to 140 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
7
Excellent match
3 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power nearly doubles into 4 ohms (70 W to 140 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
8
Excellent match
4 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power nearly doubles into 4 ohms (80 W to 160 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
9
Good match
3 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power rises usefully into 4 ohms (75 W to 110 W).
Balanced against the price of the speakers.
10
Good match
2 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power rises usefully into 4 ohms (70 W to 100 W).
Balanced against the price of the speakers.
11
Workable with care
Just barely enough (1 dB of headroom). Fine at normal volume, no reserve for peaks.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power rises usefully into 4 ohms (50 W to 75 W).
Balanced against the price of the speakers.
12
Excellent match
5 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 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.
13
Good match
3 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power rises usefully into 4 ohms (80 W to 130 W).
Balanced against the price of the speakers.
14
Good match
2 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power rises usefully into 4 ohms (60 W to 100 W).
Sensible value pick against these speakers.
15
Good match
4 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power rises usefully into 4 ohms (90 W to 150 W).
Balanced against the price of the speakers.
16
Good match
4 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power rises usefully into 4 ohms (100 W to 160 W).
Balanced against the price of the speakers.
17
Good match
3 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power rises usefully into 4 ohms (80 W to 130 W).
Sensible value pick against these speakers.
18
Good match
4 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power rises usefully into 4 ohms (105 W to 160 W).
Balanced against the price of the speakers.
19
Workable with care
Just barely enough (2 dB of headroom). Fine at normal volume, no reserve for peaks.
Rated down to 2 ohms - stable into anything this speaker will throw at it.
No 4 ohm power rating on file, so we cannot judge current delivery.
Balanced against the price of the speakers.
20
Excellent match
4 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
Power nearly doubles into 4 ohms (80 W to 150 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
Showing the best 20 of 168. Narrow it with the price range below, or a different budget split.
44 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
6 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 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.
2
Good match
6 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 (160 W to 240 W).
Balanced against the price of the speakers.
3
Good match
4 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
Sensible value pick against these speakers.
4
Good match
5 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
Balanced against the price of the speakers.
5
Good match
6 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
Balanced against the price of the speakers.
6
Good match
5 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
Balanced against the price of the speakers.
7
Good match
3 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
Sensible value pick against these speakers.
8
Good match
4 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with a 6 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
Sensible value pick against these 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 Harbeth P3ESR XD2 specs.
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