Summary: The Fischer Audio Eterna is not a balanced earphone. Its sculpted response was not designed for absolute fidelity and it would make a pretty poor studio monitor. What the Eterna does best is deliver the fun factor in a completely unadulterated form.
Pros: Big, smooth, and powerful sound, good isolation, low microphonics
Cons: Voluminous housings, cable guides required to keep cord in place, not for lovers of analytical sound
Summary: So I owned a pair of CX300II's for over 4 years and finally decided to get a new pair. Of course, I was looking to upgrade from the sennheiser in terms of Bass and overall quality. After reading Jokers 131 IEM thread, I decided to get these.
I am extremely pleased with my purchase.
Pros: Great bass - non-fatiguing - good isolation.