Not exactly what I wrote or it came out like this it's not what I meant. I mean they do scale up to better source, and particularly ones that do provide enough current, not necessarily dedicated amp. Also said to keep the gain low As for Mojo pairing, it's a good pairing but in my opinion bass is less defined and articulate than dX200 and to my taste the lower mids stronger presence has a significant influence on the overall presentation. As I said earlier YMMV, just personal taste. DX200 has leaner bass with the S (which actually is not my "default" taste) but it fits the overall balanced signature. I sure will still enjoy IE800S out of Mojo occasionally because of the fuller signature. One thing for sure whichever source the IE800S baseline will be there : great separation and detail, fast dynamic driver, striking timbre for instruments and vocals, very good soundstage and imaging.