I have a couple of items listed for sale. How do I find a summary of my ads?

I have a few wireless headphones, and I am curious about the technology involved. I am assuming they are receiving a digital signal from the phone, computer, or tablet, and converting it with onboard dac's in the headphones. Is this correct? Curious because I never see any discussion of the...

Hi folks.  I am pretty new to the headphone scene, but have been an audiophile and music lover for many years.  I have so far invested in a pair of HD800's, D7000's, a Little Dot Mk5, and a V-dac for my computer based headphone system.  I honestly am very impressed with the sound out of the...