Phil, You could use this for both, however, the site does not specify the gauge of the wire, or at least I didn't see it. For studio work, anything lighter than 20 gauge is too light, and 18 gauge or heavier is preferred.

If the wire meets those specifications, you can use it by twisting the two pairs together, which will then make it a heavier gauge wire, and solder the twisted pair to the tip connection on the 1/4-inch connectors and plugs. The sheld wire or braid is then soldered to the sleeve connection of the jacks and plugs.

For the mics, pin #3 is the hot wire, and pin #1 is the ground wire (shield). It's a straight forward connection.

Be sure to tin all connections, which helps create good, solid solder joints.

Cheers,

Gary