I looked at the instructions, dxdiag, etc and I have no idea what type of audio it is. All it says is that its 'high definition'
Heres the link:
http://www.circuitcity.com/ssm/Compaq-Presario-CQ70-120US-17-Widescreen-Laptop-CQ70-120US/sem/rpsm/oid/223178/rpem/ccd/productDetail.do
Heres the link:
http://www.circuitcity.com/ssm/Compaq-Presario-CQ70-120US-17-Widescreen-Laptop-CQ70-120US/sem/rpsm/oid/223178/rpem/ccd/productDetail.do