[deBrazza]

Your 1440s are best left at home.  Having owned mine for several years, they stay at home most of the time, unless I am heading to a place known for its solitude.  Even ambient noise at home, such as HVAC or neighbors, can hinder hearing all the details.

 

[deBrazza]

The 1440s are quite lean in regards to base and their treble is exemplified.  I often will turn on the base boost on my Fiio E18, and this does not cause much distortion with most music.  You may enjoy the 1540s more if you don't mind losing some of that spacious sound.