Yes indeed! The Sony PCM-M10 Line Out has to be one of the most unheralded (or simply unknown) 96/24 WAV transport + DAC solutions in the whole of Head-Fi. I'm really pleased that you like the way it sounds.
Using the PCM-M10 Line Out with an external headphone amp or desktop system is practically a secret. The handful of people who have tried it are usually turned off by the user interface not offering all the features they get with an iPod or a Sansa Clip. I say, "Go for sound quality, instead of convenience."
When you consider that Sony could easily be selling 100 times as many PCM-M10s as HiFiMan sells one of their all-in-one DAPs (HM-602 or HM-801), it makes sense that the PCM-M10 is priced as low as it is - it's a mass-produced item, with a quality and performance that far exceeds what the price alone would indicate it's worth.
Edited by zilch0md - 9/6/12 at 8:31pm