Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: what is a twist and lock single sided cable
Document: I am not an audiophile .. but these headphones are amazing. If you are used to listening to music through your $20 WalMart headphones you will be cashing in your pants when you listen to your music through these. Seriously, I listen to music 24/7 and these are perfectly crisp and I can hear every single crevice of every single song. The bass is good, all the other stuff is vivid.
So if you are using the headphones for a PS3, you can connect the PS3 to the TV via HDMI for video, and then connect your headphones to the A/V RCA out supplied with the PS3, provided you have a Y-splitter that will change the red/white RCA cables into a single headphone jack, and then a female-female headphone jack plug to facilitate the connection. This ran me about 15 dollars at Radioshack.
In general, a very price-efficient set of cans, they provide unparallelled comfort and sound without breaking the bank. I can put these on and listen for hours on end. As a replacement to my AKG K181's, these are absolutely amazing and make my AKG and my PC350s sound like child's toys. The sound is rich, and you can hear every single nick in the audio, and with some high quality tracks, it's porn for your ears.
I have had AD-700's, HD555's, and HD419's. I can't find a single con for these headphones. They are the most comfortable I have ever owned (sometimes I forget they're on). Sounds are sharp and clear, and the bass levels are perfect for anyone who is looking for a little more bass than the AD-700's or 555's. I use it with my NuForce uDac-2 and music sounds phenomenal. Worth every penny.
Maybe it's the Sennheiser veil?6. ImagingAKG: Excellent soundstage in terms of depth and width, sounding worthy like a real orchestra. This excellent soundstage only appears in classical/orchestra music.HD 558: Soundstage is smaller, like a band of musicians in a small room.7. AirAKG: Distance to each instrument can truly be visualized. This might be due to ample space between speakers and the ears.HD 558: Instruments seem to be sitting in a single line.
But this early, unpredictable synthesis commands attention through the 558s, throughout every twist and turn the primitive electronics sound gorgeous. Genre-wise, there hasn't really been much I haven't enjoyed through these. They can hold their own through a Beyonc&eacute; album just as well as through some chamber music.This is a hard product to assign stars to. While they do have a fairly compelling sound and hit details very cleanly, they aren't that full of life.
They haven't developed any smell or signs of wear- I don't use them if I'm sweaty.Other Notes: These are "open" headphones: They will leak sound. At low listening levels, this is not so noticeable. The cord is rather long, a problem easily solved with some twist ties. I did the "558 to 598" mod, and didn't notice much of a difference.Value: As you go up in price with headphones, the sound quality starts to level out. i.e.
It comes with a really long annoying Proprietary cable that you cant change.
cons:Too bad it doesn't have a volume-controler on the headphones cable.pros:It's nice that the headphones are pretty comfortable, though...
but the cover  easily get dirty. And you don't want to take it with you. The cable is as long as a mounting rope. After all, it's a great headphone for music and movie at home.
Answer: You are able to remove the cord from the headset. At the base of the left ear, you can twist the cable and unplug the cable. To lock it back in place, you insert the plug and twist. Hence "Twist and lock."