Hello,
i measured headphone output impedance since that data is not known (at least, i could not find it online).
60Hz sine wave file at 0db from PC via USB was used, downloaded from this forum.
I used 62 Ohm resistor and relatively good DMM. If my math is correct, output impedance is 6 Ohm.
I measured at 1V output voltage without load. If that makes a difference or is wrong, than sorry - i'm noob
Did not measure max voltage with 62 Ohm load, but without load, max output was 2.225V (on both headphone outputs).
Then again, i measured Topping DX1 output impedance with same setup and result was 0.52 Ohm headphone output impedance, but, DX1 is measured already by others and result was if i remember 0.67 Ohm or so.
Either way, i'm noob in all of that, but, since my measurement of DX1 is 30% different from reputable measurements taken, does that mean that same margin applies to my measurement of 6i6 also? If yes, output impedance is no more than 8 Ohm.
I hope this helps someone who is interested in this information. I use DT 770 PRO 80 Ohm and was curious if i'm in the "at least 1/8 rule" - seems like i am.
(sorry for bad English)
i measured headphone output impedance since that data is not known (at least, i could not find it online).
60Hz sine wave file at 0db from PC via USB was used, downloaded from this forum.
I used 62 Ohm resistor and relatively good DMM. If my math is correct, output impedance is 6 Ohm.
I measured at 1V output voltage without load. If that makes a difference or is wrong, than sorry - i'm noob
Did not measure max voltage with 62 Ohm load, but without load, max output was 2.225V (on both headphone outputs).
Then again, i measured Topping DX1 output impedance with same setup and result was 0.52 Ohm headphone output impedance, but, DX1 is measured already by others and result was if i remember 0.67 Ohm or so.
Either way, i'm noob in all of that, but, since my measurement of DX1 is 30% different from reputable measurements taken, does that mean that same margin applies to my measurement of 6i6 also? If yes, output impedance is no more than 8 Ohm.
I hope this helps someone who is interested in this information. I use DT 770 PRO 80 Ohm and was curious if i'm in the "at least 1/8 rule" - seems like i am.
(sorry for bad English)
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