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Harmony Central Puts the Mbox Pro to the Test in Ongoing Pro Review



Harmony Central editor-in-chief Craig Anderton has been giving the Mbox Pro a serious look in his HC Pro Review, and the recent test measurments he posted are so good we wanted to share them with you.

If you're not familiar with Harmony Central's Pro Reviews, they combine Craig's vast professional expertise with a unique forum style format to deliver a truly interactive product review. Over the course of several weeks, Craig will post detailed product images, sound samples and test results along with his professional opinions, while moderating a larger discussion revolving around his posts that users and even the product's designers participate in. This interactive review format provides an opportunity to dive far deeper into the details that a normal, static review format would allow, and gives Craig the opportunity to focus on the specific features his readers are most interested in hearing more about.

As part of Craig's Mbox Pro Pro Review, he tested the performance of the unit's converters and signal path using Rightmark's RMAA6 software and he recently posted the results online. His independent measurements confirm what we've been saying all along - the Mbox Pro features best-in-class performance. And now Craig posted the graphs to prove it.

"I gotta say - the test results/specs are impressive, as in, extremely impressive. No wonder Avid wasn't the least bit concerned when I said "we're really going to put this through the microscope, you know."


Intermodulation: "The Intermodulation Distortion is particularly dramatic, as in, "where is it?!?" Yes, there's you 60Hz and 7kHz tones, which should in theory produce intermodulation distortion products, but I'm really not seeing much of anything except a teeny distortion product at 180Hz and another at 240Hz - and nothing for all practical purposes at the high end. Either I really, really need new glasses, or the Avid engineers did their job."


Total Harmonic Distortion (THD): "Now for THD vs. level. With digital systems, distortion increases as levels decrease because you have less resolution. The following shows that at -6dB. THD is well under -84dB, and at -15dB, THD remains under -72dB - more extremely respectable specs."


Noise Level: "And again, we have another outstanding spec: There are no noise components higher than -120dB, and many of them sit around -130dB. Few interfaces are able to achieve this level of performance, let alone any I've tested."


The Mbox Pro Pro Review is curretnly underway and I absolutely think it's worth checking out - there are more graphs, more specs, and a great discussion that's ongoing. Contribute your own questions today!


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