The relevant links are in the spoiler above (I linked them here because they might still be interesting/helpful for some people after all given how popular the SE846 and Mojo are).That the output impedance climbs to ~ 2 Ohms in the higher ranges was stated in a review from www.hifinews.co.uk (in a printed/digital paper magazine, not online), along with backing up the Mojo's great measured performance that has already been proved by other magazines and sources with pro-grade measurement equipment.
Yep, those are some unloaded and loaded measurements done by me on my German site in my four-part Mojo review (I'm too lazy to structure and translate it into English but my résumé is that the Mojo is an excellent device and while it doesn't do everything perfectly and could also be a bit more "aggressive" at times, it is darn good overall, somewhat addictive and I'm mainly using it as a DAC only for most IEMs with an additional low impedance, low noise Amp for various reasons, whereas I use it to directly drive some full-sized head-phones; and finally I wrote that if I had to rate it, it would get ~ 4.5 out of 5 stars from me), however I've also uploaded them here on Head-Fi: http://www.head-fi.org/t/800208/the-rmaa-rightmark-audio-analyzer-source-and-audio-device-measurement-thread-measurements-in-post-3-tutorial-in-post-2/45#post_12803183
[rule]
Here are some measurements by another member months before I bought my Mojo, asking why there was some FR deviation under load: http://www.head-fi.org/t/784602/chord-mojo-the-official-thread-please-read-the-3rd-post/4320#post_12058168
...
and Rob's answer to that matter: http://www.head-fi.org/t/784602/chord-mojo-the-official-thread-please-read-the-3rd-post/4320#post_12058437
(and I definitely disagree to the quoted statement before Rob's reply that this behaviour is "definitely audible" with every in-ear, as it definitely is not, especially with those where the deviation starts above ~ 9 kHz.)
Anyway, the FR deviation in the treble when connecting the SE846 to the Mojo is nothing drastic compared to what devices some people are using with the Shure that have got a higher overall output impedance and not only in the treble and skew the FR more and also more audibly because the deviation would start earlier and already in the lower mids.
The relevant links are in the spoiler above (I linked them here because they might still be interesting/helpful for some people after all given how popular the SE846 and Mojo are).That the output impedance climbs to ~ 2 Ohms in the higher ranges was stated in a review from www.hifinews.co.uk (in a printed/digital paper magazine, not online), along with backing up the Mojo's great measured performance that has already been proved by other magazines and sources with pro-grade measurement equipment.
Yep, those are some unloaded and loaded measurements done by me on my German site in my four-part Mojo review (I'm too lazy to structure and translate it into English but my résumé is that the Mojo is an excellent device and while it doesn't do everything perfectly and could also be a bit more "aggressive" at times, it is darn good overall, somewhat addictive and I'm mainly using it as a DAC only for most IEMs with an additional low impedance, low noise Amp for various reasons, whereas I use it to directly drive some full-sized head-phones; and finally I wrote that if I had to rate it, it would get ~ 4.5 out of 5 stars from me), however I've also uploaded them here on Head-Fi: http://www.head-fi.org/t/800208/the-rmaa-rightmark-audio-analyzer-source-and-audio-device-measurement-thread-measurements-in-post-3-tutorial-in-post-2/45#post_12803183
Here are some measurements by another member months before I bought my Mojo, asking why there was some FR deviation under load: http://www.head-fi.org/t/784602/chord-mojo-the-official-thread-please-read-the-3rd-post/4320#post_12058168
...
and Rob's answer to that matter: http://www.head-fi.org/t/784602/chord-mojo-the-official-thread-please-read-the-3rd-post/4320#post_12058437
(and I definitely disagree to the quoted statement before Rob's reply that this behaviour is "definitely audible" with every in-ear, as it definitely is not, especially with those where the deviation starts above ~ 9 kHz.)
Anyway, the FR deviation in the treble when connecting the SE846 to the Mojo is nothing drastic compared to what devices some people are using with the Shure that have got a higher overall output impedance and not only in the treble and skew the FR more and also more audibly because the deviation would start earlier and already in the lower mids.
Something just didn't seem right to me so I asked Rob and provided the link to the measurements for him.
This was his reply:
and
I know. I just was interested in Rob's take on the provided measurements and he was surprised at the variance. To him it's much more than what he has measured and he doesn't know what's going on with those graphs. That's all.
Edit: Never mind about the drop @ 18kHz. He says the SE846 should only measure -0.3dB at 10kHz, not -1dB.....
This was the graph that surprised him most
