I've owned Audio Technica's wired headphones ATH-M50x for years, and I've always been satisfied with their audio quality. Now I consider buying the wireless, bluetooth version of these headphones, ATH-M50xBT2. Is the audio quality in ATH-M50xBT2 the same as in the original, ATH-M50x? If not...

Yesterday I noticed that the bass frequency on my music has become really weak. The bass didn't disappear completely, but the bass on the amazing M-50x headphones used to be so deep, lively and powerful, and now it just sounds like nothing, so weak in comparison. It should be noted that I've...

And by saying 'warm sound', you mean that these amps kind of neglect the higher notes? Are they particularly 'warmer' than the standard sound of the ATH-M50?

You mean, it's got buttons to boost/reduce the bass, mid and treble?

I'd say, around $100, max $150... (actually, in Israel where I live the prices are usually higher.) Which of the Fiio's are the most recommended?

What are this amp's qualities?

Anybody else?

I've bought my M50 a few weeks ago. Using it mainly with my Nexus 4, they certainly sound great, but I'm still looking to fulfill the headphones' potential in audio quality (more power and clarity, especially in the middle range), as well as to reach higher levels of volume (as these headphones...