In light of this thread, an email from Musical Fidelity, I suppose this is their view...
Do you have a hi-fi system or just an overpriced music centre?
It's very simple to tell them apart: dynamic range is the main measure of a real hi-fi system.
Can your system produce unclipped 105dB peaks? If so, then
congratulations on owning genuine hi-fi. If it can't, then no matter how much it cost, or what it's called, it's just an overpriced music centre.
Most loudspeakers need about 500 unclipped watts to achieve peaks of 105dB at about ten feet.
That's a lot more power than most so-called hi-fi amplifiers have. Imagine asking a sewing machine motor to power a Formula One car, and you have an idea.
You can hear when a hi-fi system is underpowered, because it clips, which limits the dynamic range. The music sounds sharp and edgy and it feels cramped.
But when loudspeakers are given enough power, a system can produce awesome dynamics, with sound that feels so real you can almost touch it.
Check the chart to find out how much power you need to turn your existing system into real hi-fi.
And relax. You can get all the power you need. Visit musicalfidelity.com at 10.10 am on 1st May 2007 to find out how.
How much power do you need for a proper hi-fi system.
Loudspeaker sensitity/Amp power for 105dB peak
83db/800 watts per channel
85/500
87/325
89/200
91/130