ChrisOc
Headphoneus Supremus
So i guess Penon wanted to start by making sure they mastered the BA tuning first. And then they thought it was missing bass extension, so they added a DD, and then they thought it needed more treble extension. So they added ESTs.
Wonder how effective is to deliver a TOTL this way.
I would imagine it is an effective way to deliver a TOTL IEM, because as you said, "they mastered the....tuning".
After mastering the tuning, then comes tuning for their target audience, finding the right price point, presentation and marketing. With those pieces in place they might just deliver a masterpiece for their target audience.