I've had my X5 for almost a month now and love it paired with my Shure SE846s. I also follow this thread religiously.
Until recently, I've used low gain with the volume between 75 and 95. Everything I read said low gain was better with these IEMs. But there were a few posts where people were running at volume levels much lower. So I wondered if the amp of my X5 is okay?
As a point of reference I ran my X3 on low gain at around 30.
I just switched to high gain for the first time and now run at volumes between 65 and 75. More importantly, everything about the sound is significantly better, which according to "experts" isn't supposed to happen.
So the question is, especially for those using SE846s, is this normal or is it an issue to address with FIIO?
I have kind of an issue with the volume, depending on what headphone I use. Have the X5 set at high gain, and with iem UMX3 @56Ohm I'm between 33 - 38 and is high enough. Now with the Sony's MDRV6 @63Ohm is another story as with Grados RS1i I Do have to go up to 60-80 or more to get the same volume effect. So I don't know if related to the X5 or the Headphones or the combination... But there is something going on. Off course iem are more sensitive.
Edited by iburdeinick - 5/9/14 at 5:30pm