I know there's plenty of threads out there regarding sound quality, but nothing has solved my issues.

If it matters I have the 2014 Moto X.

Problem: I can pick any song, doesn't matter - songs I've never listened to and songs I have, play them in Spotify and they sound "meh"... pause it, open Google Play Music, find the same song, play, without changing anything at all it sounds way WAY more full, and like I just turned my stereo up about 10 notches.

YES - Spotify is set to stream in Extreme quality. (What's worse, Google Play is only set to stream as "Normal" quality, not even their "Highest" setting.)

YES - I have cleared the cache.

YES - I have the equalizer enabled on both apps, and it shares the same EQ so they should sound the same in that regard.

So what is the deal? The disparity between the two is just unbelievable. Honestly, it's bad enough that I've canceled my subscription and switched because of the sound quality alone. You'd have to be near deaf to not hear the difference.

Is there anyone that can offer some legitimate, factual insight here?