Where would one go to buy the 2.5mm mono connectors used to attach a headphone cable to the Sennheiser HD700 headphones? Is there a parts store that sells these?  They need to be narrow to fit in what seems like an ordinary plug.

I've got the Sony PHA-1 connected to a Macbook Pro Retina and I've got a slight hiss on some quiet tracks while it is charging. (Gotye - Somebody that I used to love is a good example.)  I'm using the included USB cable and I've got my Mac's midi settings set correctly to 96K/24, etc..  ...

I'm not an expert on audio equipment, but I'm for sure an enthusiast.   Here is a video review I just created on the Sennheiser HD800 headphones.  I'd love feedback on the review.  

If I'm using the Cyber Labs Solo with an iDevice, does it matter which I device I choose in terms of the quality of the output?  I know that people choose some of the older iPod models because they want the higher quality wolfson DAC, but if I'm using the Solo, I don't need to worry about that...

Love these.  Are they available for purchase?