rwandering

Yes, this will work. I have done this (albeit just with a single 112+). Use input 2 on the PC for your mixer signal, and set it to unprocessed.

Word. If cycling power several times resolves it, I don't see how the unit is faulty or even damaged . . . but 1 power cycle should be sufficient if enough time has passed between off than on.

This is an issue that confuses many when first using the AES/BEU cable to change the settings on a PowerCab+. The Helix does not switch presets on the PC+; it changes the settings that make up the currently selected PC+ preset. Note the changes aren't saved. So, yes, you will see "PRESET NAME (edit)" on the PC+ display. If you want to verify the settings, you can go into the menu on the PC+. Note this has nothing to do with MIDI; that is not transmitted through your AES cable. If you want to change the PC+ presets, you can do this easily with MIDI. (and a MIDI cable). I use both a Helix LT and an HX Stomp XL. For one I use AES, the other I use MIDI. And for the presets I share between the two, I have them both configured.

I think no, because there is no USB host in this picture. Both the Mustang Micro and the PC+ are USB clients. Now, I may be wrong and the Mustang may also act as a host, but I'm skeptical. Alternatively, you might be able to run the headphone output through a 1/8" to 1/4" cable (as TS not TRS) to the back of the PC and turn the output up high . . . and then get something. But that input is balanced, not unbalanced, so I'm not sure what the outcome would be. (and if you use TRS to connect from a stereo output, you definitely get a bad outcome). A few variables here, and would it sound good? I doubt it.

I believe the original premise of this topic was: Upgrading from 3.7 to 3.7.1 sounds different. It seems to have morphed into "things sound different between 2.x and 3.7.1". I understand why somebody doesn't want to deal with redoing all of their presets, but we shouldn't be surprised that it sounds different. There are a massive number of changes implemented and I don't believe Line 6 implied "everything will sound the same".

This certainly works for me. My Helix presets all set the FRFR or a specific speaker, and it moves between them without a problem (using AES).

This is an element that confuses me about the capture offering. The ability to buy and trade captures seems a no-brainer. But the actual people who want to make captures seems like a very small set of people. I think 99% of buyers of gear want the stuff to (have the potential to) sound amazing and don't have the gear or interest to do captures.

Yeah, it's a big maybe. A lot of times I hear "the personal item has to fit under the seat", and I don't think that backpack will. And if you've already taken a bunch of space out of the overhead for your guitar, they may be less amenable. I travel with a Traveler headless guitar and a small amp checked in my suitcase (and maybe an HX Stomp). There are no concerns about the guitar being checked. But then, I only do that for practice (and have done an open mic with it). It isn't what I'd really want to perform with.

Sorry, I don't know why I thought you were talking about a Stomp . . . you should get the same result whichever out you are using, though consider that the XLR is balanced line out, and the others (I think) are unbalanced and switchable between instrument and line-out. I think the most important thing is that you have a physical -- analog -- volume dial. I say that b/c I used to have a MOTU Ultralight and would control my volume through its dial. But every once in a while it would decide on startup that volume was at maximum. I think my ears are still ringing from that. That's when I bought my monitor controller. That or an outboard mixer allows you to know -- with 100% certainty -- where the volume is before you play anything and nothing will change it on its own. Except maybe one of your pets.

I imagine you could use one of the various HX Stomp inputs set to line-in and then route that through clean. But I think you would be much better off putting a monitor controller in front of your monitors. The HX Stomp won't improve anything in that signal chain, and may result in an extra thing to mess with to get the sound you want out of your Mac. I have a PreSonus Monitor Station v2. It has several inputs, setup like this: "ST1": Main outs from my interface (USB to my DAW) "ST2": A CUE (aux bus) from my interface that mixes live inputs and DAW output "AUX/analog": RCA cables from an external USB DAC from my other desktop computer. "AUX/SPDIF": S/PDIF routed through my interface's mixer from my Helix's main outs. For your use case, you would go HX Stomp in (perhaps as "ST1"), and then computer output (headphone jack) into the RCA inputs or 1/8" jack (as "Aux"). There are other -- simpler -- monitor controllers though.

I use the Midi Baby 3 for additional switches on my HX Stomp. MIDI Baby 3 — Disaster Area Designs

You can change the output to send everywhere (the default) to only send to a specific output. I think that would do what you want. But I solved a similar power switching problem by mounting a power strip to my cab stand; and in another case by having two different rack-mounted power conditioners, one dedicated to my powered monitors, the other to the rack gear. That is, a power strip might be the easiest solution.

I have a different version of this: I record from analog outputs on my LT into my audio interface; I generally play through a PowerCab (PC). Assuming I'm using the PC's cabinet simulation, the situation is similar. The difference being that you have outboard amp/cab, and I have just the outboard cab. But basically, the answer is either: 1) create different paths, one of which includes an amp/cab (for recording) and the other that does not (for playing through your amp); or, 2) don't try to do this. I generally go with the latter: I have presets for playing, and presets for recording. If I want a similar sound, I work on that, noting that I will tend to be more particular about the way it records, and wouldn't want to limit the way it sounds live to most benefit the way it sounds recorded. Note I could also record off of my PC's out, though its "microphone on the speaker cab" modelling is well behind the Helix's current capabilities.

I'm going to guess you found it by now -- but in case you haven't. Navigate here: https://line6.com/software/index.html Select the Powercab from the Choose Hardware dropdown. Select your OS Click "Go". Scroll down until you find it; it is there.

I have never once had an issue with the Helix firmware updates; but then, I have always waited at least a few days before attempting it. That probably has more to do with my schedule than wisdom, to be honest, but it has worked out well for me.