ASTRO A40 HEADSET PS3 XBOX 360 CHEAP ?

ASTRO A40 HEADSET . THIS WAS PUCHASED FOR MY YOUNG BROTHER FOR HIS GAMING CONSOLES NO INSTRUCTIONS WERE INCLUDED SO NOBODY COULD SET IT UP FOR HIM . SINCE THEN HE JUST USED THE HEADPHONES TO LISTEN TO HIS PHONE. NOW XBOX AND PS3 ARE SOLD HES GOT 3DS SO NO NEED FOR THESE NOMORE . ALL THE WIRES LOOK LIKE THEY ARE THERE 7 IN TOTAL , A ASTRO MIXAMP THAT I CAN ONLY DESCRIBE AS A BOX WITH DIALS . HEADPHONES AND A BENDY MIC . IM ASKING FOR 120 BECAUSE THEY GO FOR ABOUT 160 ON EBAY WILL EVEN ACCEPT 100 IF GO QUICK MY NEAREST STATION IS BECONTREE ON DISTRICT LINE , OR MAY EVEN BE ABLE TO MEET SOMEWHERE . ANY QUESTIONS EMAIL TEXT OR PHONE