This is what i'm also experiencing using clip+ rockbox, westone 4, and Z02.3, the soundstage is greatly reduced both in High gain and Lowgain.
Well I've burned mine in for about 10 hours now, and I'm not seeing any improvement. I just cannot understand the tremendous reduction in soundstage. The difference is like night and day. When I'm listening with my DBA-02 only, I can hear everything just fine, sounds coming in from the left and right just like they should, soundstage is nice and airy. Once I plug in the ZO, everything gets compressed into the middle. All the finer details that I used to hear from the left and right get pushed to the back where I can no longer distinguish clearly, and the DBA-02's sparkle disappears. I've tried everything from lowering the setting to the minimum, LOD cable on low-gain setting, headphone out on high-gain, nothing seems to work. I tested it with my brother's UETF10 as well, and got the exact same result. I can't remember whether it was like this before I sent it back to digiZoid for the revision as I had only had it for a week until I learnt about the recall.
Is anyone else experiencing this? Or could my unit be a lemon?