A playlist of the soundtrack used for Armored Core, and Armored Core: Project Phantasma for the PS1. There's only a few from Master of Arena because I don't want to hit the limit for future uploads.

Armored Core PSX OST

Favorite Armored Core OSTs

All Old Gen Armored Core OSTs

No one else uploaded the one from AC1, so have this.

All rights go to FromSoftware, I only uploaded this so that others could listen to this and the rest of the game's soundtrack in Soundcloud.

High Fever Album Version - Armored Core Soundtrack

Response～Infraction - Armored Core Soundtrack

The one playing ingame. 

So far, only the album version was uploaded until now.

Link Scene - Armored Core Soundtrack

PsycoDevil