Amplifier have always been at a crossroad between underground and mainstream. Initially, they tried their hands at the latter, the self-titled debut and Insider boasting some more radio-friendly material that managed at times to condense their awesomeness into 3-4 tight minutes. Still, dissatisfied with all the corporate environment and its less-to-no interest in sonic substance, the band independently released the massive Octopus, which was more or less a *** you to commercial viability…