Why? I think because people like to suffer (through the decision making), makes life more challenging thus more interesting
Is it worth it? Be your own judge (my quick test setup in order to get "AQ DF 1.0c" like sound from Meridian Explorer; something I just did by accident).
1. Audirvana Plus (24/96 source from hdtracks) + Wireworld Starlight 7 + Meridian Explorer (headphone out) + Shure SE535
Failed; I really did not like the sound; I think Meridian Explorer headphone amp does not have good synergy with SE535 (Explorer sounded way better with Beyer MMX 101 iE but these IEMs are just not my cup of tee). Sound is very analytical, no lows, thin (the opposite of MMX 101, where there was way too much lows). Very clean, a lot of high details, just no lows/too bright. To get a comfortable sound I would crank up the volume where mids would become too loud. This somewhat reminded me AKG Q701 that I did not like at the time.
My conclusion: not my sound; some of AKG Q701 owners might respectfully disagree though
2. (same as No.1 only with external amp through Explorer line out)
Audirvana Plus (24/96 source from hdtracks) + Wireworld Startlight 7 + Meridian Explorer (line out) + Kimber Silver Streak + Graham Slee Novo + Shure SE535
OK, this is much better - lows are back, sound is less thin, mids are not standing out anymore (still a bit analytical but not too bad).
My conclusion: Explorer required careful matching if used with headphones directly; external amp though works great (always did for me).
To my total surprise, the sound of No.2 was very close to what I was getting from SE535 being plugged directly into AQ DF 1.0c... (*and* I would still prefer DF, but that's just me). Now, it should probably become very obvious by now that
alpha421 was absolutely right - even for $250 it was a steal.
BTW, owning both Dragonfly and Explorer, I don't agree how WhatHiFi dropped a star (5->4) from Dragonfly's review when Explorer was released; I think they are both great products that are different enough with each deserving 5 stars easily; one just needs to carefully match them to the rest of the system (especially headphones if used directly).