It's a bit hard to compare because I use the "adapt sound" feature with the S7 Edge exynos, whereas there is no cheating with the BTR1. I enjoy both, but my ears are easy to please LOL. Having said that, the BTR1 is the more accurate of the two, and I think is better. I've had no problems driving any of the gear I've tried so far with either, but I will try some harder to drive stuff later. But the BTR1 should have no problem with the IT01's. To sum it up, I just use the BTR1 now instead of the S7 due to how good the BTR1 sounds to me, and due to the convenience factor of having my phone free of cables.