I believe the OP is mistaken - my industry source informs me that the top prize actually looks a little different:
I am reliably informed that it has quad ES9018K2m implementation, balanced LO & HO, and 2x microSD card slots (which are visible in the above picture). Power output likely to be marginally higher than DX90, but not as high as DX100. I notice that the DX180 appears to be approximately 4-5mm thicker than the DX50/DX90, and that does make sense, given the extra chips, µSD slot, and, presumably, higher-capacity battery to handle the extra demand. Price expected to be sub-$1000, which sounds about right, given iBasso's tendency for excellent value-for-money.
Edited by Mython - 4/1/14 at 5:18am