Hi, I have a pair of AKG K702s that I've used unamped with my Macbook for a while. Despite claims that these "need" large amounts of amping, these are relatively low impedance headphones and anyone here who knows a thing or two about electronics might be able to realize how misguided some of these claims are. Whatever the case may be, I'm looking for a decent DAC/Amp combo around $150 or less. I was waiting for the E7 for a while, and if it receives good reviews, perhaps I'll go for it. Otherwise, what other options do I have? I used to have a D2 Boa but not while I had the K702s; would that be a good option? Any input would be great!