Power needed
4.7–50 W
per channel, into 8 ohms
To hit 95 dB peaks at 3 m from a pair of Klipsch R-5650-S II, you need at least 4.7 W a channel. More than 50 W is wasted here - that is all Klipsch rates the speaker to take.
Power is not your constraint. The
Klipsch R-5650-S II is efficient enough that essentially any
amplifier we list will drive it at this level. Choose on inputs, streaming, phono
stage and price instead - and if you like valve amplifiers, this is a speaker
that suits them.
Show the working
- 95 dB target at the seat
- +4.8 dB for 3.0 m of distance
- -3 dB for a stereo pair
- -90.0 dB effective sensitivity
- 2 dB allowed for optimistic published sensitivity
- Published sensitivity 92 dB, used as 90.0 dB per watt.
PrimaLuna EVO 200 Power with the Klipsch R-5650-S II
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Has a 8 ohm tap, which is exactly what this 8 ohm speaker wants. Taps: 4 / 8 / 16 ohm.
A valve amplifier makes the same power on each tap, so what matters is sensitivity - and at 90.0 dB this speaker is efficient enough that 44 W is comfortable.
A power amplifier: you will need a preamplifier, or a streamer with a volume control, as well.
Full PrimaLuna EVO 200 Power specs
·
Clear this amp
224 integrated amplifiers suit the Klipsch R-5650-S II
Also show the 1 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 an 8 ohm speaker.
Power nearly doubles into 4 ohms (60 W to 120 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
2
Excellent match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (60 W to 120 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
3
Excellent match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (60 W to 120 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
4
Excellent match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (55 W to 105 W) - a stiff supply that copes with hard loads.
Balanced against the price of the speakers.
5
Workable with care
13 dB of headroom, far more than needed. No harm in it. Well above the 50 W the maker rates the speaker for, so keep an eye on the volume knob.
Rated down to 3 ohms, comfortable with an 8 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.
6
Excellent match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (50 W to 100 W) - a stiff supply that copes with hard loads.
Sensible value pick against these speakers.
7
Good match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power rises usefully into 4 ohms (60 W to 100 W).
Balanced against the price of the speakers.
8
Excellent match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (60 W to 110 W) - a stiff supply that copes with hard loads.
Costs more than the speakers - worth it only if you plan to upgrade them later.
9
Excellent match
12 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (75 W to 150 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
Excellent match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (50 W to 100 W) - a stiff supply that copes with hard loads.
Costs more than the speakers - worth it only if you plan to upgrade them later.
11
Good match
11 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Barely gains into 4 ohms (60 W to 70 W) - a modest power supply.
Balanced against the price of the speakers.
12
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
Balanced against the price of the speakers.
13
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power rises usefully into 4 ohms (50 W to 75 W).
Costs more than the speakers - worth it only if you plan to upgrade them later.
14
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 (40 W to 80 W) - a stiff supply that copes with hard loads.
Costs more than the speakers - worth it only if you plan to upgrade them later.
15
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Rated at the same 50 W into 4 ohms as into 8 - the power supply runs out before the load does.
Sensible value pick against these speakers.
16
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 8 ohms, comfortable with an 8 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
Balanced against the price of the speakers.
17
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 8 ohms, comfortable with an 8 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
Balanced against the price of the speakers.
18
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Rated at the same 40 W into 4 ohms as into 8 - the power supply runs out before the load does.
Balanced against the price of the speakers.
19
Workable with care
14 dB of headroom, far more than needed. No harm in it. Well above the 50 W the maker rates the speaker for, so keep an eye on the volume knob.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (125 W to 250 W) - a stiff supply that copes with hard loads.
Costs more than the speakers - worth it only if you plan to upgrade them later.
20
Excellent match
12 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (75 W to 150 W) - a stiff supply that copes with hard loads.
Costs more than the speakers - worth it only if you plan to upgrade them later.
Showing the best 20 of 224. Narrow it with the price range below, or a different budget split.
68 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
Good match
12 dB of headroom over what this speaker needs - peaks stay clean.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power rises usefully into 4 ohms (70 W to 125 W).
Balanced against the price of the speakers.
2
Excellent match
8 dB of headroom over what this speaker needs - peaks stay clean.
Has a 8 ohm tap, which is exactly what this 8 ohm speaker wants. Taps: 4 / 8 ohm.
A valve amplifier makes the same power on each tap, so what matters is sensitivity - and at 90.0 dB this speaker is efficient enough that 28 W is comfortable.
Costs more than the speakers - worth it only if you plan to upgrade them later.
3
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Has a 8 ohm tap, which is exactly what this 8 ohm speaker wants. Taps: 4 / 8 / 16 ohm.
A valve amplifier makes the same power on each tap, so what matters is sensitivity - and at 90.0 dB this speaker is efficient enough that 44 W is comfortable.
Far more expensive than the speakers. Spend it on speakers first.
4
Good match
10 dB of headroom over what this speaker needs - peaks stay clean.
Has a 8 ohm tap, which is exactly what this 8 ohm speaker wants. Taps: 4 / 8 / 16 ohm.
A valve amplifier makes the same power on each tap, so what matters is sensitivity - and at 90.0 dB this speaker is efficient enough that 44 W is comfortable.
Far more expensive than the speakers. Spend it on speakers first.
5
Good match
12 dB of headroom over what this speaker needs - peaks stay clean.
Has a 8 ohm tap, which is exactly what this 8 ohm speaker wants. Taps: 4 / 8 / 16 ohm.
A valve amplifier makes the same power on each tap, so what matters is sensitivity - and at 90.0 dB this speaker is efficient enough that 70 W is comfortable.
Far more expensive than the speakers. Spend it on speakers first.
6
Good match
9 dB of headroom over what this speaker needs - peaks stay clean.
Has a 8 ohm tap, which is exactly what this 8 ohm speaker wants. Taps: 4 / 8 / 16 ohm.
A valve amplifier makes the same power on each tap, so what matters is sensitivity - and at 90.0 dB this speaker is efficient enough that 40 W is comfortable.
Far more expensive than the speakers. Spend it on speakers first.
7
Workable with care
13 dB of headroom, far more than needed. No harm in it. Well above the 50 W the maker rates the speaker for, so keep an eye on the volume knob.
Has a 8 ohm tap, which is exactly what this 8 ohm speaker wants. Taps: 4 / 8 ohm.
A valve amplifier makes the same power on each tap, so what matters is sensitivity - and at 90.0 dB this speaker is efficient enough that 100 W is comfortable.
Far more expensive than the speakers. Spend it on speakers first.
8
Workable with care
13 dB of headroom, far more than needed. No harm in it. Well above the 50 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 (100 W to 190 W) - a stiff supply that copes with hard loads.
Far more expensive than the speakers. Spend it on speakers first.
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 Klipsch R-5650-S II specs.
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