Psh, you're only using the 10-foot cord with your smartphone? I use the, like, 60-foot long one for my portable setup. Just kidding, hahaha. That thing is RIDICULOUSLY long! Through my Galaxy S3, the Q701 is, well, fine. Not too special. But not bad either o.O. Only annoyance is that I have to turn the volume up above 50%. I suppose you could try the Q701 without a standalone amp to see if you like it overall. And if you do like it, then get an amp to make it even better^^.