Schmalle

These two statements shouldn't be true at the same time. Puzzling. Both the main input and the return normally behave identical when it comes to input clipping (if the input block's Gtr Pad is set to Global or Off). What we know so far is that is not the input of the amp that clips, because the clipping doesn't happen with the clean voicing. It happens after the amp's send. A) With connecting amp send -> amp return directly: does it clip? B) Redo the 2nd test from my first post: Create an empty patch, crank the VOLUME knob. Connect amp send -> IN L. Connect OUT L -> amp return. Does it clip? C) going on from B... In the input block turn the lower knob one step right so that it displays "Input Return L/R" Connect amp send -> RETURN L. [Connect OUT L -> amp return.] Does it clip? D) When you get clipping in boost voicing, do you get less clipping in -10dBV mode?

Ok, cool, make the empty patch an 4CM patch now: Add an FX Loop L block. Set Global Settings->Ins/Outs->Send/Return L to Inst. Set Global Settings->Ins/Outs->Return Type to Return. Connect guitar -> IN L. Connect OUT L -> amp return. Connect SEND -> amp in. Connect amp send -> RETURN L. Does it clip? If not - there you have your 4CM preset template. You can add blocks one by one and identify at what point the clipping comes in.

Yeraym updated the app and migrated to different hosting service: https://hxview.vercel.app/

Here is a simple test that will help us moving forward: Set Global Settings->Ins/Outs->Input Level to Inst. Set Global Settings->Ins/Outs->Output Level to Inst. Create an empty patch (check input and output blocks for default settings). Crank the VOLUME knob. Connect guitar -> IN L. Connect OUT L -> amp input. Does it clip? Connect amp send -> IN L. Connect OUT L -> amp return. Does it clip?

Use the looper as a first block in a patch when dialing in sounds. This way you get rid of the acoustic part of the sound and can dial in the electric / amplified part.

Yes, you can set up the tip and the ring functions of the TRS jack independently for switching or expression - you need it e.g. for the Mission Engineering SP1-L6H to work.

Pushing a plug in the right input is doing the switching.

To use a bass amp as a subwoofer you could split the signal for the bass amp (low frequencies) and the PA speakers (everything above low frequencies) using the split block in Crossover mode with a frequency around 80...180Hz. Main L/R for the PA speakers and a Send for the bass amp.

No, the preamps are not in the HX Effects. There are some candidates in the distortion block though. In particular the Legendary Drive (Carvin® VLD1 Legacy Drive) comes to mind. But some others can deliver nice preamp-like results when combined with post EQ from e.g. a Simple EQ.

Is your Ground Lift switch engaged? What kind of interfering signal is it?

Test with this: Set Global Settings->Send Return L to Inst. Set the input block to Input Return L/R by turning the lower knob one step (on a preset without FX loop). Use the Return L as input and test if whether the volume still drops. If it doesn't - but still does when you use the main input - then it's probably a hardware defect in the main input.

I guess you mean toggle bypass/engage (not toggle reset)? I'd suggest to use a MIDI monitor like MIDIView to figure out what the MC software actually sends.

Touch FS3. That information is on the HX Stomp Cheat Sheet. Probably a good opportunity to check if all information on it are known to master navigating the device.

Powering up via power strip vs power switch is the same from a technical standpoint regarding the operation of the LT.

Use the left input of the Stomp.

I read through the post and didn't find a question mark. Bummer.

No, the Engl Z12 can only send MIDI PC (program change) messages - you can use it switch select presets. It can't send CC messages which are required to do the stuff you asked for.

Preamps in the Helix are quiet: they are turned down by 24dB because some of them are so loud in the real world that they would clip during the output DA conversion. I'd do the following: Set input, send/return and output level to Inst, max out the VOLUME knob. This way there should be unity gain, meaning a vanilla 4CM patch should have the same level as the pure (no 4CM) amp has. Verify that this is the case. Set the patch's output level to +20dB, set the fx loop block's return level to -20dB. Now the preamps are usable without struggling with their level. Hope that helps!

Changing Global Settings -> Ins/Outs -> Output Level from Inst to Line results in a significant boost. That might be the cause.

I got that. I couldn't hear a clear difference in high end response - some notes on the old fw seemed sharper, some on the new - I didn't hear evidence that would hint at a difference in fw specific sound. If you'd have used the exact same test input for both fw versions the comparison would have much higher significance because that would exclude the human error i.e. hitting notes the exact same way. I'm totally open to accept the claim that fw versions sound different btw - I'm just not convinced. When you compare stuff make sure to exclude your bias. When you present evidence that isn't convincing to others your own confidence should go down. Producing good A/B comparisons isn't trivial or easy. As a thought experiment: How would you design a test that would be compelling to a skeptical guy like me?

The MIDI controller must be able to send a series of PC and CC messages with one button. E.g. snapshot 2 on preset 02A would need two MIDI messages: PC:003 followed by CC69:01. You don't need to come up with these values since they are displayed in the preset list menu on the device.

The left input is tamed by 3dB when you use the right input. If you use the right input first then there is no change when you also plug a second instrument into the left input.

Here is how you can test for defective MAIN INs on the unit: Plug into input R and listen if it is still dull (add a +3dB gain block if you want to match the level of input L). If it is not dull but input L is then it's defective. If both are dull: Set Global Settings -> INs/OUTs -> Send/Return to Inst and Return Type to Return. Set the input block to Input Return L/R by turning the lower knob clockwise one step. Plug your guitar into Return L and test for dullness. If it is not dull but Inputs L/R are (and Input Z is at 1MOhm) both Inputs are defective. Report back.

Less gain -> less overdrive -> less harmonic content. Compare the input levels of both interfaces. You'll probably find that you use a good amount more on the Xsonic. Use INST level for the input (Global Settings). Tip: you can also put a gain block first in the path of the HX Stomp patch.

Maybe a factory restore (globals, presets, IRs) helps? - Hold FS 2+3 while powering up the HX Stomp. Do a backup before. Also you can open a support ticket and see how they can help you.