Well, that's not what he said, exactly. Based on my personal time with the Fostex TH-X00 variants, I think tuning can play a pretty big role on how we perceive sound, but it could depend on a variety of factors I'm not smart enough to understand. Generally speaking though, I think we can all agree that drivers sound like themselves. And no one is calling this headphone a bass cannon. Fwiw, I feel like my EQ tweaks had a positive impact to the sound. Again, they were not big moves, but they help smooth out the voicing a bit and make the PM-3 sound a tad less congested. That seems like a worthy "specific purpose" to me.