Some background - my previous rig is a Fender tube amp with 8 or so effects pedals and I bought an HX Stomp in hopes of eliminating all pedals, but I had hoped to use my amp as an onstage monitor, and I also need to use an amp at practice because our practice PA can't handle anything else.
THE PLAN
So, I plugged the guitar into the mono input on the Stomp and went out of the mono output jack to the return input on the back of my amp. My amp is a Fender Super Sonic 60 and it has a ton of headroom. I hoped it would be a clean platform that would work until I got comfortable at gigs with just running straight to the PA and hearing the guitar through a wedge monitor. We play a wide variety of covers requiring jangly guitar one song and heavy distortion the next and everything in between. I play a Strat and a Gibson SG primarily, depending on the song. My plan was to focus on snapshot mode and program literally every song with it's own preset. "1A" would be the first song, with the first preset being the primary sound, click on second switch for lead boost, and third only if the song required it. 2A would be the next song, etc.
Because I was running into the effects return, I am only using my main power amp and bypassing the preamp (I think). In the HX Stomp, I started by using just AMPS with no cab, believing my speaker was providing that "personality".
THE PROBLEM(S)
I have tried every conceivable combination of amp and distortion effects (and EQ) and I can't get any distortion that sounds even close to the tone of my Fulltone OCD or even Boss Super OD. The sounds are just not full and "meaty" like I expected, and also like I have heard on YouTube from other Helix/Stomp users. So, I tried using only Preamp models instead of Amp models and I didn't notice any improvement in tone (it also got very quiet...). The volume variation as I run through the various presets I have created are a real problem and it will take some time to get everything balanced out, but I can overcome that hurdle. I love the delays, chorus, phaser, sound gates, etc. The clean tones are better than the dirty ones, but overall, I can't make it sound as good as my previous setup, even clean. My temporary solution is to add back my distortion pedals and remove the AMP from the presets, and just plug into the front of the amp. So I'm using my amp's preamp and power amp, my distortion pedals, and the Stomp is only used for the other effects. It is working and the sound is MUCH improved, but it is not the setup I had in mind. I can't help but think I'm missing something important. Is my amp throwing the sound off? Would one of those FRFR speakers make it sound much better? I can tolerate the current sound at practice and onstage if the straight-to-PA sound out front is good. Any suggestions? Thanks in advance for taking the time to read this LONG post.