How about Audio converter ?

[ogs]

when listening I make sure the setup is as best as could be.

Well I thought you would   My (very modest) speakers also outperform Phantoms in some respects so I understand what you are saying. I'd suggest this is not within the OPs original question. Running from a 3.5 mm output on a portable player is more convenience than high-end so imaging and such may not be the most important.