I don't know anything about your guitar, but your amp is just too small to get a "good" metal tone. For Metal, I would suggest a minimum of at least a 1x12 (one 12" speaker) combo amp. Let us know how much are you willing to spend on an amp, and we can help you out a little better. In the mean time, why don't you read a little guide I put together called "How To Find The Amp That's Right For You". You can find the link to it >HERE< Then click on the attached file.