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.
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.
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.
use your EARS to enjoy MUSIC .... NOT as an analyzer