I use AKG 712 & have no problems. The headphone amp isn’t great quality, but it isn’t bad either; it’s absolutely fine for composing/jamming/performing/recording. I, personally, wouldn’t want to use it for mixing, but I have an Apogee that I use for that.
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Yes, the crackle can be a result of hitting the cans with more signal than they can handle
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Headphone output is working A1 here (using Beyerdynamic DT 900 PRO X). The thing to know is that the headphone output monitor knob seems to only be an attenuator of the master volume, so if the master volume is quite loud you have to keep it very low. I assume that’s why it might be problematic in some cases.
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Thanks! Good to know. I also figured out that compared to analog mixers, the sound can be cleaner, but not necessarily in a good way. Still, I just went ahead and ordered one anyway 
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Ok if I get this right:
– pre-fader in the software
– in the channel strip section buttons allocate Aux to each instruments
– plug headphones in Aux Send 1
– save the scene
Is this correct?
That should go like that
Just bought and updated the firmware for L6.
Still unsure if its exactly for me even though i knew the things i had issue with when i bought it.
Namely the aux not being able to be stereo, and needing to use an input pair for the output from my pc. Which i understand that its considered a usb device like how tablets are, but i wish it was like my focusrite interface where the main outs output the pc as well.
But other than that, its great and compact. And would be good if i ever wanted to do dawless stuff
Just got my L6 set up. Midi implementation seems good for the most part, but seems super weird you can’t control efx params anywhere but the software editor (delay feedback, reverb color and size, etc)
Headphone amp. I have a Liquid Spark amp that I tested against the onboard amp. The onboard amp is fine for most things, but like another poster said, I wouldn’t want to do any serious mixing with it.
Audio Interface: I did a quick test recording my voice on track one and my MPC on a stereo input. The MPC track sounds great. My voice was clipping somewhere along the way, and adjusting the level of track 1 didn’t do anything. Something I need to figure out.
Anyway, really liking it for my needs so far!
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My L6 just arrived today. It works fine, but it does not show up as an audio device on my computer (mbp pro 2021, latest updated macOS). I am trying with the cable came with the unit, this is my only option right now. The L6 gets power from the computer, but that is all.
I made the firmware update, but did not solve the problem.
Anyone else has this issue?
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Try the other USB-C port!
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Side usb is power only ! Use the other as mentionned above… 
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OMG! 
It works! I can’t believe how noob I am!
Saved my day!
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Also it can be powered just from the top usb if connected to the pc!
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It can. But the idea of 2 subs is to have clean power to circumvent noise from an noisy device. So while it works, it’s something to keep in mind.
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Happened to me too!
I’m not used to having both, but good reasoning to have separate power and data.
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Now that I’m using it for some times, some complaints.
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I miss a variable gain for the mic inputs. I use contact mic and they are definitly clipping at input. I have to be extremely gentle to keep a correct gain.
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I encounter some regular bitcrushing problems in bitwig I cannot quite reproduce consistantly. It just happens, tweaking buffer rates fixes the problem.
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Less simultaneous tracks possible than with my good old ucxII, cpu spikes much faster.
Switch between computer and ipad is lightning fast and works like a charm but I’m considering getting another soundcard for mixing and Daw use.
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Heard that a couple of times… Is your input in the draw set up for 32bit float?
If not that could be a reason.
But pickup microphones are for sure a wild breed to record
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I’ll look into that, thanks !
Oh yes, I really do like the flexibility/portability of the L6 but I could only be disappointed I compared to a RME interface. The L6 does punch above its $299 weight due to all the shared components and development with higher end recorders*, but I don’t expect it to handle things as smoothly as a $1700 device in drivers and hardware latency. I wouldn’t doubt the UXC is designed to offload less to CPU.
*It’s interesting how scale of industry works for a primarily hardware company like Zoom vs Roland who prioritizes… I suppose modular software(?) with as commodity hardware as they can run whatever on.
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I’d like to see gain on all inputs. Eurorack levels constantly clip & have to be attenuated before input. It’s a big oversight on Zoom’s part, especially as they offer a eurorack kit. It is still an amazing piece of kit for the price & makes the creative process better for me. I’m going to buy an 8 channel attenuator to place before it
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