I've finally finished my review of the To Go! 334. I feel more like the zombie I described in the review than ever before. Why? Well, I've been listening non stop for about 3 weeks, maybe longer, stopping long enough to break it with a GR8 for a few minutes.
For now, I'll just put up a few Headfi words, and later add what I think is important and hopefully get interaction with some other owners, especially on the sound stage. Also, I don't believe these need an amp - and, since there are a good number of amps that won't meet the low Ω requirements of these earphones, you will have to choose very wisely if you do go the amp route.
For now, know that this is the most impressive earphone I've ever used. It's the gobs of detail in every frequency that draws me into music like never before, creating music unlike I've heard before. And I have some very nice earphones.
Suyama's FitEar will devastate the market with this product, mark my words, though, as they aren't a factory, mostly psychologically.
If there are any errors in my review, please speak up - there always are.