Where to buy wire for headphones

[Jordo]

I'm looking to rewire my headphones but can't find the right wire.
It's 4 core, 1.5mm I believe. It's really tiny wire.

 

[Harald Kapp]

Buy a matching headphone extension cable, cut the connectors on one end and solder to your headphones.

 

[Martaine2005]

Good idea from Harald. Here are some examples
Certainly wont be 1.5mm. The outside diameter of them all might be though. Here's an example
That should give you an idea of what to search for. Don't buy audio cable as the sheath is not very flexible.

Martin