Hello.   I once had the Monster Turbine Pro Gold headphones, and the 3g Arrow amp. The amp seems to open up the bass, without unbalancing the sound. I could have the bass on full, and have no distortion, except at higher volumes ofc. The entire sound was more crisp. I really recommend the pair. I don't have the amp right now, but i have ordered the 4g arrow to replace it. I recently upgraded my Gold turbines to the Coppers, but i will have to wait for my amp to...