Pros: Sound stage, treble and bass extension, incredible detail, sq:price ratio
Cons: Require a lot of burn in, stock foams are useless
These iems are incredibly detailed and clear at both ends of the spectrum. Although this is the bass edition of the GR07, the bass is not too heavy as to cloud the mids and highs. It is quick and controlled, but never fails to let its presence be known. Mids are clear and slightly dry; nothing special. Highs are spacious and airy, which contributes to a very well presented sound stage. What makes these iems special is that they sound terrific at both ends of the spectrum and never seems to falter...that is after you burn them in. No question as to whether they need at least 300 hours of burn in, as they are annoyingly sibilant. Thankfully this completely disappears and you are left with bliss. I should also say that they bring out the faults in your music. That is, if your music is low quality they are going to sound like ****. Be warned that you'll hate that once loved 192 kb/s album that you could not find in flac...
They come with a lot of tips, including tips that look like the sony hybrid knockoffs. I found that foams bring out the best in these iems, however the stock foams are garbage. Comply tx 400s work as well as the trusted olives.