Yes. I'm pairing this with the X3 and the Klipsch X10.I can definitely experience an improvement in soundstage and detail. I didn't expect that the X10 can be benefited this much with the Muses 02. I've tried to pair these earphones with the E12DIY using other given op-amps before, but the result was not very impressive.
Similar situation in the low price (less than US$150) Android phones market in China. Many new and old brands are competing in this quite saturated market.
It seems that as long as there is some profit for a particular gadget then within 1 year or 6 months you can see lots of Chinese factories replicating this product. Kind of crazy.
The sellers all claim that they will refund 10 times back to you if their products are fake. But ridiculously they will never confess their products are fake.I think you should be able to get a refund from taobao, show them these photos. It seems there is no way to buy cheap Muses then...