vadinoy
Head-Fier
a screenshot of foobar2000 in a private message?You look a bit like a basshead to me, so...lower the output volume from your EQ with -2.4dB, increase the 30Hz with +2.4dB and the 40Hz with +1.2dB and give it a listen.
K712 are neutral cans, it's not really to emphasize the bass, but a bit of punch is much more easy to achieve with DSP/EQ and much more cheaper than swapping a neutral amp with another one that sounds more bassy.
Also, iFi has DAC/headamp combo that have X-Bass included and you might want to read some reviews for their equipment too; this means built-in EQ, not very adjustable like a software EQ, but if it's per your liking then it might be better.
BTW, V5i are a bit on the bassy-side...have a search on this forum and see if someone else tested them. If can't find one...ping me and I'll see if I can try it out (I already have access to 2 identical PLAY unit, so I can do A/B test with different opamps installed in both units).