Been listening to my ECR-500 for about an hour now, reading these old threads, and thought i may as well bump one.
I paid $62 for my ECR-500, so, a bit high of the recommended price, but it's still the best $62 I've spent this month. Just showed up today.
I've got them hooked up to the amp of my reckless youth - an Akai UC-W5 stereo 50 watt per channel power amp, currently being fed directly from the line-out on my iRiver H120 ('cause i can't figure out where the heck the matching preamp is). This is a compact amp from a bookshelf system, but fairly decently built for it's size - based on Sanyo STK0050-II power packs. I have completely re-capped it, and upgraded some of the power supply caps as well.
Wualta, as usual, is right - the imaging on these things is wonderful, and the bass is real nice.
This amp seems to be a little bright in the upper mids, so I've applied a bit of EQ, and i really like what I'm hearing.
I wish i had something more intelligent to say - I guess I'm just distracted by the music