I believe in being brutally honest with reviews so let's jump right in! Here's my honest take-away...
You're right, definitely a headphones kinda song. That's some mean bass right there (I mean that in a good way of course.) I did found it hard to hear the bass at times, but this was solved by turning the volume WAY up. Nothing wrong with that really, it's actually a very good song to listen to at a high volume. The other instruments sound good, some nice synths in there. The song has a smooth, haunting sound to it, and I'm sure that's what you were going for based on the tags. It has a nice Parasite Eve sort of vibe (PS1 game.) It'd be a great ambient piece for a survival horror game like that. Another thing I'll touch on are the fantastically woven-in sound effects. Really. hats off to you, because they fit absolutely perfectly!
With all that said, I give your song a rare 5-star rating. I don't have any criticisms big enough to give it anything less. I really enjoyed it! :-)