Yeah, the FitEar lineup is pretty crazy! There are products that aren't available to the general public, and some models like the C435 (which exists higher than the MH334 in their consumer lineup? Maybe not?) that only seemed talked about in whispers.
Quote:
Originally Posted by
silverkaze 
This might be off topic but very interested in the forte IX you have, could you please post some impressions and also some comparisons vs MH334? How do they sound and do you like them?
I might make a thread for impressions of the Piano Forte line soon. At the very least, I'll be posting some in-depth impressions of the Piano Forte IX and X in the coming weeks.
Without getting too off-topic, I'll say the Piano Forte IX is the polar opposite of the TG 334 in terms of sound. The PFIX is one of the most colored IEMs out there: it's extremely mid-centric, lush, symphonic, grandiose, warm, and liquid. It colors everything you feed into it, so it's extremely limited in application. Some tracks will sound way off, while other tracks will sound absolutely amazing.
If the TG 334 is a window, then the PFIX is practically an impressionist painting.
The Piano Forte X is even warmer still.