If you listen to music from your phone, computer or streaming services, you have probably heard of a DAC and a streamer, and you may wonder whether you really need them. Let's clarify what they do and when they are worth it.
What is a DAC?
DAC stands for digital-to-analog converter. All digital music, whether a file or a streaming service, has to be converted into an analog signal to reach the speakers. That is what a DAC does. A good DAC performs that conversion with more accuracy and naturalness than the basic electronics of a computer or phone.
What is a streamer?
A streamer is the component that fetches music from the network, from your own files or from services such as Tidal, Qobuz or Spotify, and delivers it to the system with quality. Many streamers already have a built-in DAC, handling both functions in a single box.
Do I really need a DAC?
If you listen to digital music on a good system, yes. The difference is audible. The audio output of a laptop or phone is designed for convenience, not for fidelity. A dedicated DAC reveals detail, space and naturalness that were hidden in there.
What if my amplifier already has streaming?
Then it probably already has a streamer and DAC built in, a practical solution that is increasingly common. In that case, you just need to connect it to the network and to the speakers. Separating the components only makes sense when you are after maximum performance.
How do I choose?
It depends on how you listen to music and on the rest of the system. What matters is balance: a top-of-the-range DAC connected to modest speakers does not work miracles. Choose as a set, listening to the final result.
Frequently asked questions
Does streaming lose quality compared with CD?
It does not have to. Services such as Tidal and Qobuz offer quality equal to or better than CD; the key is having a good DAC doing the conversion.
Does a DAC improve the sound of Spotify?
It improves the signal conversion, yes, although the final quality also depends on the source. For the best result, combine a good DAC with a high-resolution service.
Where can I hear the difference?
In our listening room in Lisbon you can compare the same music with and without a good DAC and decide whether the difference is worth it for you.