Sony's impressive, insane new Walkman debuts at IFA

If you're a music lover who still isn't satisfied with the audio from your smartphone, Sony has a couple of new Walkmans that might be just what you're looking for -- assuming you have deep pockets.
They are the new NW-WM1A and NW-WM1Z models, due for sale later this year. The former is black and has an aluminum body while the latter is gold and crafted from "oxygen-free copper," according to Sony.Martyn WilliamsSony's NW-W1A and NW-WM1Z Walkman on show at IFA in Berlin on September 1, 201