Just a short review.

First thing, the comfort was actually better than I thought.
I used a Sony XBA-A3 for two years and it was always a pain in the ass putting those on. The iSine at first seems equally hard to get along with, but after several practices, I found out that it was actually easier to wear on, and once it's there, it stays there.

Sound wise, it's true about everything about them.
1. Soundstage: They have the largest soundstage I've ever heard on IEMs this price. In fact, I would rank them close to HD650. Just a tad behind HD700.
2. Clarity: I really think that objectively having an astonishingly low THD really translates to subjective listening experience. These sound really, really clear. The transients, the vocals, the drums, snares sound so vivid and transparent. I would say that coming from these little things to full-sized headphones like HD650/HD700 you'd feel like the sound is rather veiled. Dynamic headphones just don't have that kind of cleanness when music gets complicated. I would rank my iSine 10 better sounding overall than my HD700 & D5000. Even the HD800S being not amped properly (by a Schiit Asgard) can lose to these little things in clarity and cleanness...

Other impressions worth mentioning:
1. The iSine 20 has a bit better bass & imaging, yet it only feels like a $99 difference. The iSine 10 & 20 are really close in performance. I think that even if you go the extra mile, iSine 20 is still not "end-game-perfect" so why bother. For portable use, I think iSine 10 would be sufficient.
2. I don't like the sound of the Cipher cable. It seems to me that there's some kind of DSP inside which messes up the dynamic range. (Maybe some kind of smart DRC algorithms) I actually prefer using 3.5mm straight from my iPhone 6S, sounds amazing enough. Feed them with a Mojo and you'll have a listening experience that's desktop level.

For the price, the iSine 10 is really unbelievable.

I started from using a Nuforce udac2 and later on upgraded to a Taiwanese brand DAC/AMP combo called DA&T U1s which costs about $400. Recently I've acquired a Chord Mojo and even though Mojo is intended to be a portable DAC/AMP, I found that the DAC portion is somehow better than the one in my U1s. (And of course WAY better than udac2) I've been using the Mojo as a reference DAC for a while and became curious about how a well built dedicated DAC would sound like.

After getting one for over half an year of listening, I can say that the DAC-80 is clearly better and offers a balanced sound all around.
I'm using an HD800S through Jotunheim and the soundstage really opens up coming from Mojo to DAC-80. Instruments are more realistic in the recordings, especially piano and strings. Vocals tend to get hot because of the treble spike on HD800S, but on the DAC-80 it feels more relaxed and well placed in space. I even found out that a certain sound which I always considered noise in the background of one particular violin track was actually the violinist breathing!!

I think the Mojo's strong suit is its detail and accuracy, yet the congested soundstage wraps up too many information in a small space, restricting its sound to be as musical & natural as the DAC-80.

The DAC-80, on the other hand, has a slightly softer touch to its edge (just a tad softer, it's still very detailed and precise) and a larger soundstage both in depth and in width. The result is a very natural and effortless sound, which places all the instruments and vocals around your head in the right place and distance.

If anyone likes the sound of Mojo yet searching for a better performance desktop DAC, this is a guaranteed upgrade.

I started from using a Nuforce udac2 and later on upgraded to a Taiwanese brand DAC/AMP combo called DA&T U1s which costs about $400. Recently I've acquired a Chord Mojo and even though Mojo is intended to be a portable DAC/AMP, I found that the DAC portion is somehow better than the one in my U1s. (And of course WAY better than udac2) I've been using the Mojo as a reference DAC for a while and became curious about how a well built dedicated DAC would sound like.

 

Now I've been listening to the DAC-80 for several hours, A/B testing with an RCA switcher (Mojo -> Asgard, DAC-80 -> Asgard) and I can say that the DAC-80 is clearly better and offers a balanced sound all around.

 

I'm using an HD700 and the soundstage really opens up coming from Mojo to DAC-80. Instruments are more realistic in the recordings, especially piano and strings. Vocals tend to get hot because of the notorious treble spike of HD700, but on the DAC-80 it feels more relaxed and well placed in space. I even found out that a certain sound which I always considered noise in the background of one particular violin track was actually the violinist breathing!!

 

I think the Mojo's strong suit is its detail and accuracy, yet the congested soundstage wraps up too many information in a small space, restricting its sound to be as musical & natural as the DAC-80.

 

The DAC-80, on the other hand, have a slightly softer touch to its edge (just a tad softer, it's still very detailed and precise) and a larger soundstage both in depth and in width. The result is a very natural and effortless sound, which places all the instruments and vocals around your head in the right place and distance.