I lost my review which I had it side by side with the LW3, but I managed to find my first impressions of a 100hour 'QuadFi10'
UM Quad Triple Fi 10 w/ ES cable
I decided to go for this upgrade as I totally had no idea on how the actual UE11 sounds like because Jaben couldn't find their demo unit when I went there the other time. While I liked the TF10's accuracy and highs, the fit was an annoying issue despite me changing tips and modifying the shure olives. (Olives w/ complies bore)
The upgrade set me back about S$600+ (used TF10, driver upgrade + reshell, ES cable, shipping and impressions) and I was left doing a ctrl-r in this thread repeatedly to look for impressions of those who did the same upgrade.
However, when the Quads came back I was kind of disappointed because the sound just sounded totally off to my ears despite the perfect seal (which my livewires failed to achieve, since the seal on the LW3 broke once I yawn/ tilt my head).
The bass that was brought on by the newly added driver sounded boomy, bloated and all over the place and while the treble extensions were enhanced, the overall sound signature was nothing like the TF10.
I decided to let it play for around 50hours before judging again and I'm glad I did. The bass kind of tamed down, became tighter and the overall sound seemed to finally click.
Although the bass was pretty powerful (like many people have commented on THE UE11Pro), I still found it bearable despite myself not really a basshead. The closest likeness to it IMO would be a 2-300 hour FS Atrio, although the quantity of bass present in the Quad still wins the Atrio.
rest of the text went missing. sorry that I couldn't salvage more
I will try to answer any questions aimed at this upgrade to the best of my knowledge, but since I'm still a novice at this hobby, I hope your will bear with my unprofessional impressions