I was interested in the oBravos, and ended up spending a half an hour listening to the copper and titanium Ra. I initially listened with both the LPG and WM1Z, which left me confused. The treble was very prominent, and incoherent with the rest of the signature. It wasn't overly bright per se, but its prominence distracted from the rest of the signature, while its timbre was off-putting. Like a more extreme version of the W900 perhaps. However, listening via the oBravo amp brought the treble back in line, resulting in a smoother and more coherent signature. So in all fairness, these are very hard to drive and should be considered desktop iems. If I was the guy behind the counter I might have emphasized that from the go, to avoid people getting the wrong impression.
Even with the amp, the general presentation of its sound did not strike me as different from a traditional iem. When you listen to the KSE1500, its resolution and transparency are a clear step above a standard BA configuration, giving the electrostat driver a unique selling point. I didn't find this the case with Ra. It had nice features like quality dynamic bass, with good extension and nice balance between sub- and mid-bass, giving it a nice punch without being overbearing. Its stage was holographic, and on par with something like the i4 or Fourte.
But I guess I was just most disappointed by the tone. For its price, I was expecting an exceedingly natural sound, but maybe that’s just my preference. The copper's tonality was a variation of neutral, which was neither particularly accurate in timbre, nor engaging. Vocals were neutral in body and staging. It’s one of those in-between tunings where I couldn’t figure out what the intention of the sound was. Just being neutral? The Titanium version was a bit brighter in tone, and sounded fun for pop music. My guess is that these rely heavily on the source for power, as well as to add some flavour to the sound. They will undoubtably scale up with a high quality desktop system, but it's hard for me to gauge if that's incrementally more than another iem would. As is, I failed to see the magic.