Power needed
3.8–60 W
per channel, into 8 ohms
To hit 95 dB peaks at 3 m from a pair of Tannoy Mercury 7.4, you need at least 3.8 W a channel. Anything from about 7.5 W to 60 W a channel is comfortable; past that, more watts stop buying you anything.
Power is not your constraint. The
Tannoy Mercury 7.4 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
- -91.0 dB effective sensitivity
- 2 dB allowed for optimistic published sensitivity
- Published sensitivity 93 dB, used as 91.0 dB per watt.
PS Audio Sprout100 with the Tannoy Mercury 7.4
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 (50 W to 100 W) - a stiff supply that copes with hard loads.
Full PS Audio Sprout100 specs
·
Clear this amp
178 integrated amplifiers suit the Tannoy Mercury 7.4
Also show the 1 we do not recommend
1
Excellent match
12 dB of headroom, far more than needed. No harm in it.
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.
2
Excellent match
12 dB of headroom, far more than needed. No harm in it.
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.
3
Excellent match
12 dB of headroom, far more than needed. No harm in it.
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.
4
Excellent match
13 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (70 W to 140 W) - a stiff supply that copes with hard loads.
5
Excellent match
13 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (70 W to 140 W) - a stiff supply that copes with hard loads.
6
Excellent match
13 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (70 W to 140 W) - a stiff supply that copes with hard loads.
7
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 (55 W to 105 W) - a stiff supply that copes with hard loads.
No current price on file for this amplifier.
8
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 (55 W to 105 W) - a stiff supply that copes with hard loads.
9
Excellent match
13 dB of headroom, far more than needed. No harm in it.
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.
10
Excellent match
13 dB of headroom, far more than needed. No harm in it.
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.
11
Excellent match
13 dB of headroom, far more than needed. No harm in it.
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.
12
Excellent match
13 dB of headroom, far more than needed. No harm in it.
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.
13
Excellent match
13 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (80 W to 160 W) - a stiff supply that copes with hard loads.
14
Excellent match
13 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (80 W to 160 W) - a stiff supply that copes with hard loads.
15
Excellent match
13 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (80 W to 150 W) - a stiff supply that copes with hard loads.
16
Excellent match
13 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
Power nearly doubles into 4 ohms (80 W to 150 W) - a stiff supply that copes with hard loads.
17
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 (50 W to 100 W) - a stiff supply that copes with hard loads.
18
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 (50 W to 100 W) - a stiff supply that copes with hard loads.
19
Excellent match
14 dB of headroom, far more than needed. No harm in it.
Rated down to 4 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.
20
Excellent match
14 dB of headroom, far more than needed. No harm in it.
Rated down to 4 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.
Showing the best 20 of 178. Narrow it with the price range below, or a different budget split.
18 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
13 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
2
Good match
13 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
3
Good match
14 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
4
Good match
15 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
5
Good match
15 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
6
Good match
16 dB of headroom, far more than needed. No harm in it.
Rated down to 6 ohms, comfortable with an 8 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
7
Good match
16 dB of headroom, far more than needed. No harm in it.
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.
8
Good match
16 dB of headroom, far more than needed. No harm in it.
Rated down to 4 ohms, comfortable with an 8 ohm speaker.
No 4 ohm power rating on file, so we cannot judge current delivery.
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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 Tannoy Mercury 7.4 specs.