Disagree completely. My SA6 Ultra is my current favorite, extremely dynamic, and punchy throughout. Timbre is rich and involving, amazing guitars - rock music, vocals, prog, electronic - all sounds exactly the way it should with this IEM. Does best with some solid amplification, perhaps that was missing? An actual detailed review with reference songs, musical types, and more actual analysis would make a more convincing case - see previous two reviews. Since quantities are limited, I hope you will put them in the hands of someone who will appreciate them more.