Wired Headphones or Bluetooth Headphones, Which Is Power Saving?

For Cell Phones Is Wired Headphones Or Bluetooth Headphones Power Saving?

There has been a question, that is, when the phone plays music, respectively, with headphones, Bluetooth and external playback, in the end which is more power consumption? It is guessed that everyone will say headphones < Bluetooth < external playback, so is it really so? Here we will use the specific understanding of.

Headphones v.s. external playback

As we know, the cell phone outside the music is the use of the phone's internal speakers to achieve, no matter how small the power of the speaker, the speaker internal ferromagnetic material circulation power consumption is also greater than that required to drive the headphones.

In principle, headphones adjust the volume is to change the resistance, the general cell phone speaker power rating are in 0.5W-0.8W, earbuds power is generally not higher than 40mW (0.04W), so, plug in headphones to listen to music will naturally save some power.

So, in-ear earbuds and headphones compared to which more power consumption?

The answer is: power consumption does not have much to do with whether the headset, mainly depending on the impedance of the headphones (the unit is the European, the greater the impedance, the more power consumption, in general, the greater the impedance the better the sound quality).

External v.s. Bluetooth

This comparison, to treat the situation. We know that 4.0 before the Bluetooth headset power consumption is relatively large, far more than ordinary headphones, even more than the cell phone outside into also power consumption.

Say Bluetooth 4.0, although Bluetooth 4.0 than the previous version of Bluetooth power consumption is much lower, and now the cell phone is also using Bluetooth 4.0 technology, but the test shows that the power consumption of Bluetooth headset is 1.6 times the power consumption of ordinary wired headset.

However, if you use the phone built-in speaker external music, power consumption is based on the phone volume decision, if the phone volume more than 60%, it will be more power consumption than connecting Bluetooth devices; if less than 60%, then the Bluetooth more power consumption.