Well, I think I might've been successful! I will maintain that the mini manual was no help and I basically had to figure it out for myself, but
@Admin M@, if I may suggest a few edits (since I don't think I need support at this point), here's what I would have liked to see. In short, a section designed specifically to tone match a live amp in the room using a microphone while monitoring through headphones.
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To Tone Match an amp in the room using your own mic (monitoring through headphones):
A. EQUIPMENT SETUP:
1. Plug your guitar into Input 1
2. Send a 1/4" guitar cable from Output 3* to the input of your amp (make sure volume on Output 3 is down and/or amp is off or on stand-by)
3. In "Setup > I/O," page over to Audio, Scroll down to Output 3, choose "Copy Input 1" and turn it "ON"
4. Mic up your amp, connect it to your mic pre-amp, and connect the output of your mic pre-amp to Input 2.
5. Turn on your amp
6. Turn up the volume on Output 3 completely (so the guitar amp essentially gets your purest guitar signal)
7. Use the meters to make sure you're getting the best, loudest signal without any clipping
B. SETTING UP THE PRESET
5. Choose or create a preset that sounds similar to the amp you're trying to capture (clean, high-gain, edge-of-breakup, etc.)
6. The preset should have, at a minimum [Input > Amp > Cab > ToneMatch > Output]
C. TONE MATCHING
7. To capture the LOCAL (Axe Fx amp) signal:
a. Turn
off the cab block
b. Click/choose "Start Local" and jam out for a while using a variety of chords and positions
c. Click/choose "Start Local" a second time to end the local capturing session
8 To capture the REFERENCE (your live amp) signal:
a. Click/choose "Solo Reference" - Now you should just be hearing your mic'd amp/cab through your headphones
b. Click/choose "Start Reference" and jam out for a while using a variety of chords and positions
c. Click/choose "Start Reference" a second time to end the reference capturing session**
9. Click/choose "Match"
There you have it! You should now be hearing your own amp 'tone matched' in the Axe Fx III
*You can use any I/O combination you like, as long as you keep track of what signal is going where.
**You can just click "Match" here and it will end the capture and match the tone in one click
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I will add that I have zero idea why you can "export" your tone match to a cab slot - unless the Tone Match block is used for capturing IRs as well, but it definitely doesn't work to "store" Tone Matches; or rather, I haven't figured out how to recall them from cab slots INTO cab slots and have them not sound like garbage and NOTHING like the Tone Match that's sitting in the preset.
I guess the Tone Match block has to stay in the patch. It's not a problem, of course. I guess initially I was under the impression that the Tone Match was like a utilitiy that you put in to do its job, then removed it once you had captured your amp's soul. In any case, I'm going to figure out how to capture IRs next and how/if you can use them with the Tone Match. I don't see how it'd be possible unless you just captured the amp without the speaker and then placed it in front of the cab block... but then... could you remove the amp then? These are all things I look forward to exploring in the coming weeks! Stay tuned