Hey everyone, I've just got my HD958 and really pleased with it. Currently using it with a UCA202.. I'm looking for an upgrade in the DAC/AMP. There are alot of threads about this already but I've got one "problem". I already own AV40s and do want to use the DAC to power those. I dont think this is possible with the stand-alone e7, but will this be possible with the e7+e9 combo? There are RCA outputs on the E9, so this probably is a stupid question, but better be safe then sorry. And if this is possible, is this possible with any headphone amp with RCA outputs, or will the headphone AMP interfere with the AMP in my AV40? Browsing through this forum i've also spotted the zero-dac, but all the recommendations are a couple of years old. Should the Zero still be considered for the HD598?