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Post by puffin on Apr 5, 2013 18:52:39 GMT
I got my Zigis yesterday. Very quick delivery. I was a bit shocked at the size of the case, but obviously it is all in there so..... Initial impressions are there is a lot of gain so not going to be wanting for sound level. Will keep it running over the next week and then give a proper review.
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Post by Cranky on Apr 20, 2018 21:54:33 GMT
Can anyone tell me what difference the output impedance of the amplifier makes with regard to sound reproduction of headphones? For example, my Mackie 402VLZ4 mixing console has a headphones output impedance of 60 ohms, whilst my AKG K702 headphones have a stated impedance of 62 ohms, although the DC resistance measures 57 ohms. Can this be considered a good match?
I also have an inexpensive Behringer HA400 four-output headphone amplifier, which is fed directly from the computer's sound-card, with an output impedance of (according to the spec.) 80 ohms, yet it sounds perceivably no different to the Mackie unit.
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solderdude
Administrator
measureutternutter
Posts: 4,886
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Post by solderdude on Apr 20, 2018 22:08:57 GMT
The difference between 60 and 80 Ohms is negligible.
Most amplifiers are low Ohmic.
AKG headphones in general sound good from a higher output resistance.
Not all headphones change tonal balance with different output impedances.
Some react a lot (bass becomes too much or bloated) and some don't react at all.
Depends on the impedance plot of the headphone.
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Post by Cranky on Apr 21, 2018 1:09:52 GMT
Thanks, Frans. It helped fill a vacant area of my knowledge.
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