You might wanna consider purchasing effects in order to get those bass tones. the zoom b2.1u would be a good choice. one of the distortion channels can get you that cliff burton sound. I have sound samples of the zoom b2.1u on my soundclick website. here's the link.
www.soundclick.com/crystalman85
Feel free to check it out. hope this helps you out on getting the sounds you want. Also, the schecter damien bass is an awesome choice for a bass guitar.