I also have the recable done with oyaide. I don't know how to put it but everything is a bit "clearer" but also more natural and mellow. So yes, I think you can say it takes the edge off a bit. But I would also wait a bit more for the burn in (either of your headphones or your brain) to kick in and then decide if you want to mess around. The e17 by the way has the ability to reduce the highs and lows by small increments.
So my advice is to go with the e17 first, so you can use it as a DAC/amp and see how you like it. Recable only if still needed.