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stoplooking4me
3
Sep 28, 2016
Will this DAC/Amp combo be able to drive the Massdrop Hifiman HE-350's?
Those headphones are 19 Ohm impedance, but I cannot seem to find any reference for the output impedance of the SMSL SD-793II anywhere online. Do I have to worry about damaging my headphones because of their low impedance?
Leon_Magnus
27
Sep 28, 2016
stoplooking4meI took part of the HE-350 drop myself, and one thing I wanted to mention was that apparently they are over 19 Ohms to power. Originally, it was posted that it was 50 Ohms to power, and yes there was a change in details, but Will from Massdrop states that the fre'quency response and other specs actually stayed the same which was 15khz - 22khz:
"Did the product change from when we launched the drop to now? Nope. Everyone who joined this drop got the exact same thing the reviewers got, the same thing Unbox Therapy got, the product has not changed."
Moreover, most others have reported issues with powering it with mobile devices and other lower powered solutions. It stands to reason that it's actually 50 Ohms to power; I myself do see a big difference between my Beats Studios (32 Ohms) and these HE-350s when using any device. I hope this helps!
thuNDa
1
Oct 25, 2016
stoplooking4methe SD-793II has a very low output impedance.
http://www.head-fi.org/image/id/8917344 (O2 = 0.5 ohm O/I alc onboard = ~ 75 ohm O/I Soundblaster Z = 22 ohm O/I SD-793II = as low that it doesn't interfere with the O/I sensitive HD590's at least)
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