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PeterLandry
33
Apr 22, 2014
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What is the output impedance for the headphone output?
Apr 22, 2014
Kaboose
231
Apr 22, 2014
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Input SPIF×1 Coaxial*1 USB(1.0)×1 Analog RCA *1 Output Analog RCA*1 6.5mm headphone*1 Frequency 20HZ---20KHZ (+/-0.5dB) THD + N <0.00227% (-92.8dB)@20khz Unweight Headphone output 0.05% Input choose USB/SPDIF ×1 Analog/ digital ×1 Headphone output P-PMAX:10V
Headphone output impedance : 32 ohm---600 ohm
Line output 2Vrms Power input DC12-18V 500mA Size (chassis ) 135*51*170 (mm)
Apr 22, 2014
wild_one
235
Apr 22, 2014
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You do realize that nothing listed in your reply actually states the output impedance, but rather more of supported headphone impedance, right? I mean, if it really had an output impedance of 32 to 600 ohm, I wouldn't even bother with such absurd impedance.
Apr 22, 2014
DaveinSM
47
Dec 1, 2018
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I’m curious about this as well (5 years later), as running a pair of Grado Sr80e does sound pretty bright through this amp. That recommended impedance range for headphones of 32-600 would suggest that the actual output impedance is not nominal (less than 1 ohm). I’d bet it’s in the 4 ohm range, as I believe recommended headphone impedance matching is generally considered to be at least 8x output impedance. So the recommended minimum headphone impedance for a 10ohm output would be ~ 80 ohms. Lots of studio monitors like AKGs won’t show any frequency response anomalies, but low impedance IEMs probably would. I think my Grados are around 30ohms, and they are bright sounding anyway. But the impedance matching may not be helping.
Dec 1, 2018
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