Originally Posted by squallkiercosa
I was wondering, my old macbook pro 13 noise floor level has increased ( I'm not really that surprised considering it's a 3years old laptop) I opened twice always careful enough to not mess up with anything.
The noise floor level is way too noticeable using my tf10, with the w4r it is still audible but less annoying and got me thinking: does headphones' impedance and sensitivity impact on noise floor levels perception? What do you guys think?
what a phone with higher impedance and lower sensitivity does, is that for a given signal, it will make a lower sound. both music and noise are lower on this IEM. the trick is that when you will increase the volume on your laptop to get a proper listening sound, you actually only increase music volume. most noises will stay as loud whatever volume setting you use.
so when you increase your volume setting, you increase the difference between music and noise (most noises at least).
- the usual solution is to get a headphone with lower sensitivity and higher impedance (but then you need to be sure your laptop can actually drive that headphone).
- the other viable option is to get an amp as most amps will have a much lower noise floor than your laptop. that way your laptop will give higher voltage signal for the music with still the same low noise signal, making the difference between music and noise to become huge. and the amp just does the job of a volume knob to get you the desired volume.
the advantage of the second solution is that you can keep the IEM you like and you're sure it will be driven properly.