Do I need an amp?

[NewWaveAudio]

I currently have the Sony MDR x10 headphones. I mainly use them with my modded Galaxy S3 with Acid and Pure audio 2 sound mods. Love the sound coming out of them, but songs with lower bitrates can't power them. Have the same problem with some YouTube videos.

 

[Bassman999]

I would say anyone can benefit from an amp, esp if you are maxing out the volume to get the sound level/quality you want/

 

[PurpleAngel]

I currently have the Sony MDR x10 headphones. I mainly use them with my modded Galaxy S3 with Acid and Pure audio 2 sound mods. Love the sound coming out of them, but songs with lower bitrates can't power them. Have the same problem with some YouTube videos.

 
i would think Bit-rate would have not any effect on loudness.
I would assume the problem is with your Galaxy S3/programs/mp3s, I'm not saying there is anything really wrong with the phone or applications, could just be you have poor quality low Bit-rate recordings and Youtube videos?
Or there is some setting in your program that needs to be changed to boost the audio for poor quality mp3s?
 
You welcome to try a FiiO E11 portable headphone amplifier with your Galaxy and it might help.

 

[NewWaveAudio]

I mainly have the problem with a few songs on the new beats music app

 

[Brooko]

I currently have the Sony MDR x10 headphones. I mainly use them with my modded Galaxy S3 with Acid and Pure audio 2 sound mods. Love the sound coming out of them, but songs with lower bitrates can't power them. Have the same problem with some YouTube videos.

Bit rate has nothing to do with volume.

And the MDR-X10s are very easy to drive (24 ohm impedance and 106 dB/mW sensitivity). I actually tried these recently at an airport with my iPhone 4. They don't need additional amping.

The problem is either with your source files (very low quality maybe?) - or even with the headphones themselves (maybe they don't suit your preference). From my brief listen they had pretty loose bass. It pretty much overpowered the midrange.

A typical "consumer" targeted headphone - bass heavy and overly warm. Great for those who are looking for that type of sound I suppose.

 

[PurpleAngel]

I mainly have the problem with a few songs on the new beats music app

 
Might be easier and cheaper just replace those few songs and buy higher bit-rate mp3s of them?
Or buy used CDs with those songs on them and make your own 256k or 320k mp3 files.