I'm new to this thread but as a lcd 3 owner I thought I'd chip in. Like a few others I do love the sound but find the upper frequencies too rolled off to the extent that some high frequency detail was missing. The cans are only 3 months old and I asked Audeze to check the frequency graph with the serial no. to make sure all was ok which they confirmed. So I've now replaced the stock cable with Toxic Cables Silver Widow. This has definitely given the upper frequencies a boost without any harshness at the expense of a small decrease in 'body' in the bass which seems a little tighter but less full. For me it's a good trade off. I'm surprised that there is little discussion on 'best' cables for the Audeze in comparison to the variety of headamps that are debated, as I reckon both affect the sound to equal extent.
tnx for the info. the only way to find out is to try different cables out , either in a meet ( but wont be your gear ) or buy the cables and lose money as u sell some of them ,