I just find out why the sound is so different! It's my trim knob on my echo audiofire 4! It was set to very small amount, then i just crank it up and now metal shop sounds better with model deliver a more metal tone. Adding the screamer is even better! Now my audiofire 4's meter reads red and peak when I play palm muting however I don't hear any clipping at all. Is this o.k? If i back up the trim knob to hit the yellow light (recommend level for recording), my amp sound not much distortion compare to hitting red. What should i do?
Thank you for your help.