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We covered the essential, conventional configuration for your first music system in the previous page. We described such a system as a CD player, an integrated amp, and a pair of speakers. However, that's not the only configuration possible for your first system. There are alternatives. Let's see what they are.
One alternative is to replace amp and speakers with high quality headphones.
Why? Because a pair of headphones costing Rs.15,000 will be more accurate than a pair of speakers costing five times as much.
How do headphones do this? Easy -- they are smaller, have less material, and need to move much less air. So, to generate the same sound waves in your ear, they barely whisper like a butterfly's wings. This makes it far easier to make accurate transducers, lower their distortion.
Which headphones should you buy, and from where?
Remember that listening to music through headphones is not to everyone's tastes. Some people just want that room-filling sound. Headphones feel artificial and clinical to them.
Computers have changed our homes, not just our work. Many of us are now comfortable hooking up a computer to our music systems, and keeping all our music as digital files on a computer's hard drive. You can then get rid of your CD player. This means that you have keep your computer switched on whenever you listen to music, and you have to connect the computer to the music system. If this means that the computer is in the same room as your music system, the sound of the cooling fan in the computer can be quite irritating.
But these problems are now solved. There are things called digital music servers, and these servers can pull music files straight from a storage device.
The most famous of these digital music servers is the SqueezeBox (Wikipedia page, product page). They can pull music out of your computer or from Internet radio stations (if you have a good broadband Internet connection), and pump them into your amp.
These devices have pretty good digital-to-analog converters. At least the SqueezeBox has a D-to-A converter which can easily best inexpensive DVD players. They sound far superior to cheap audio cards in laptops or PCs.
What's even better is that many of them can pull music files out of storage devices. You do not need to keep your computer in the picture. Two very well-known storage appliances which can feed the SqueezeBox directly are the Netgear ReadyNAS and the Linksys NSLU2. Using these devices instead of a general-purpose PC saves space, eliminates PC fan noise, and reduces electricity consumption.
So, with one of these devices, you replace the CD player of the conventional music system with a music server and a compatible storage appliance, and you have a more high-tech music system which can play your digital music collection, pull music off Internet radio Websites, and impress visitors. A 1-Terabyte disk drive can hold all the music that we can imagine collecting in our otherwise confused and pointless lives, and the whole system remains quite affordable.
Remember not to use lossy compressed music files for good audio quality. Do not use MP3 files. If you must compress, use the FLAC file format. MP3 files and other lossy audio compression methods add clear high-frequency distortion and bring about listening fatigue, which becomes quite apparent during long listening sessions. And why should one bother to save disk space and lose audio quality when disk space is so inexpensive?
There's nothing stopping you combining one of these music servers with a headphone amp and headphones, for the ultimate in light-weight, intimate, high-tech music playback.
The portable music player combines digital audio playback (like a SqueezeBox) with a storage appliance, all in a cigarette packet sized form factor. The most famous portable digital music player today, in terms of market infatuation is, of course, the iPod and descendants.
Many portable music players have reasonably good DACs built in, but almost all have very limited headphone amps. In other words, they convert their digital music into analog signals quite well, but when it comes to driving a headphone, they run out of breath. This of course does not cause problems when you hook them up to a domestic audio system's amp.
Like the digital music server, this approach replaces the CD player or DVD player from the signal chain. The amp and speakers remain in your system as before. And you load up the portable music player with all the music you want to listen to. Many small diskless players (like the iPod Nano) can hold 16 GBytes of music, which is a lot of music for many people.
As with the digital music server, do not use lossy compressed audio files if you care about the quality of your system's sound.
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