I think I read in one of your discussions (not sure if it was you saying it) that going from the headphone output of the gear to the Audio in of the PC would bypass the analog to digital processing by the sound card and that would reproduce only the unaltered analog sound from the gear.
It won't (do that), and I didn't (say it).
You know what I say: DON'T GO INTO THE PC AUDIO IN.
That scheme is irrelevant to your situation. Looks like an attempt to dry-mix or what not. If the intent was to bypass some internal processing this way, no reason to go through that gear to begin with. And it won't bypass conversion since going into the computer's audio card - it does it's job, which is to convert. A PC internal audio card is not an analog mixing device, that's what we have outboard gear for. You have it, it's called VOX Tonelab.
1 source, 1 audio path, 1 converter. Stereo out or headphones - should go out to stereo or headphones, that is all. Don't complicate it, instead - address the software/OS issues!
You haven't answered yet: what do you (intend to) monitor with exactly? How are you hearing what you record? Sound comes out of what?
Here is the amp model: Fender Mustang IV V2 150W 2x12 Guitar Combo Amp
OK I guess you could make it work, it has all you need. Seems like an outdated product with little to no software support, but it may sound good, and we have a monitoring speaker right there. You could explore that, if you go with the manual and original software you received with it. Try updating the firmware.
The Tonelab has all you need, nothing other than: USB -> PC to record, audio out to monitor. Like this.
Same for the Orange, or Behr... You have all that you need. AGAIN, trying this or that box, won't improve your latency situation. OS tweaking will , and will allow working with ANY device at low latency, fast buffers, with no clicks or pops. When the latency issue is fixed, you could switch to monitoring after conversion (after PC), if there's a reason for you to hear the result in real time (VST fx and amp modeling for ex.)
BTW, did I mention to not go into the PC internal audio card? I bet I did! Disable it in BIOS and in Windows device manager already, and cover those damn inputs with red duct-tape.
Last edited: Jun 19, 2018 08:34:11