Pros: Neutral, balanced, wholesome, amazingly close to full sized cans of similar traits
Cons: Build doesn't inspire confidence, doesn't look like a $300 pair of earphones, proper amping is necessary to extract full potential
I'm writing this now because having had my LCD 2 cables chewed out by my cat (he's more dog than cat), I've had plenty more listening time with the TBA 04.
In particular, I'd like to point out how well instruments are separated out in The Roy Hargrove Quintet's - Strasbourg/St.Denis track. The detail extraction is revealing - the bass celloists hands/fingers as they slide across the strings, the twang of the bass cello strings against the body. And when compared to my full headphone LCD 2s - there's a wholesome quality in these IEMs akin to what you get from full sized cans.