HI
@solderdude (or anyone else who knows), I have a Mackie 802vlz4 mixer with a 60 ohm headphone output impedance (
https://mackie.com/sites/default/files/PRODUCT RESOURCES/MANUALS/Owners_Manuals/802VLZ4_OM.pdf). I really like the mixer! I didn't realize the impedance was so high when I bought it. I use it for casual listening because it's hooked up to a bunch of different sources I listen to audio from and it's not convenient to headphone output all over the place.
I normally use the Philips Fidelio L2, whose output impedance ranges from 18 to 22 ohms (
https://www.innerfidelity.com/images/PhilipsL2.pdf). I'm not really sure if this is a large variation -- I guess not? Either way, I am using a very small range of the volume pot, and that's already with a lowered volume on my DAC (controlled via my computer, from 40/100 to 70/100 depending on the source). I think the iEMatch would be a good candidate for this setup, to both dramatically improve impedance matching and to give me some more room on the headphone volume pot on my mixer.
What do you think?