Luxferre

Did that, as I said in the OP, I jumped the FX loop, getting tone loss when placing the block after the amp block, not a lot but noticeable. Today I used a buffer and the return lvl on +1dB, that worked fine, close to a not noticeable difference. And by the way, I used mono and stereo with stereo pedals, same issue. Tonight I'll setup a looper to record a video with the issue and my solution, maybe that will help someone and maybe get a better solution or a cause ;). Thanks to everyone helping!

Tought of that, I tried with just amp, fx loop and cab, stereo and mono, same issue.

Sorry if it's not exactly the same as I was tweaking and trying things, puting the fx loop pre and post amp, but amp and fx loop blocks are the same, I'm not trying to mislead or anything. Pedals I've tried: Plethora X5, Boss Rv-3, Source Audio EQ, Ibanez TS-9, Boss RC-1 and everyone of them causes the issue, the only one that worked fine was the TC Spark mini (maybe because it's a tiny circuit), that made me think it's an send/return impedance issue, since there's no option to tweak it, and it really souns like I'm runing a 30 pedal chain, tomorrow I'll try using a buffer. That said, does the fx loop impedance changes depending on it's placement on the chain?

Everything is at instrument level, the preset is attached up there

Base.hlx

Hi! I'm having a big issue when using the fx loop of the HX Stomp XL, I'd like to put my delay and reverb pedals in the fx loop like in a real amp (between the pre amp and power amp), the closest to this is placing the fx loop block after the amp block and before the cab, but when I do this, I get a HUUUUGE tone loss, it's unusable, placing it after the cab gets extremely harsh and noisy but before the amp block I have no issue, but there's no point placing delay and reverb in front of a overdriven amp is you want a clear sound from them. I've tried with lots of pedals and cables and this always happens, even jumping the fx loop with a patch cable I get tone loss, not terrible, but noticeable. Is there a way to fix this? I've read a lot of topics about fx loop tone loss, but none pointed the placing of the block.

I have the same problem, bought it B stock and yeah, it's a hardware problem. I made a ticket to know what the issue is, because it's coded in the firmware to show "04" when something's wrong, it doesn't show a fixed "99" like it's stuck on a value, is like not recognizing the pedal, maybe this "something" could lead to a fix.

Hi I bought a B stock Amplifi FX100, it was almost new but the volume/wah pedal didn't work. Tried calibrating it but after step 3 it shows "04" not "99" as the video tutorial says. BTW, the pedal button works fine (switching between wah and volume). Has anyone this problem? Is there a way to fix it? Thanks