Riki1

Right so I have one line (path) with a delay, then split the path before the delays and put a reverb in and then join them back up before the output? How does this make any difference compared to just having reverb come after delay in the same line (path) ? Sorry I'm usually a straight into the Amp guitarist that runs everything simple but I am interested in learning the benefits and theory of all this stuff.

Yes, just guitar into 2 overdrive pedal > Aqua puss > DD-500 > Strymon Flint > Wampler faux spring > Amp. No idea what parallel does to be honest. There doesn't seem to be much control over the delays settings such as tape heads 1+3 or Tone , just sounds different I guess, to get that effect do I have to instead us 2 delays and sync them differently to have the effect of tape heads or something? I like the idea of using these pre amps to to change a few presets such as making it sound more Voxy or supro (soup pro), but do I put the pre Amp first or after distortion?

I have a fender twin reverb Amp 65 RI Amp. It has no effects loop just straight in the front. I usually use pedals inc. Strymon,boss,Barber etc for my effects but hate the tap dancing so yesterday I bought the Helix LT to replace them. When setting up a new preset I'm wondering what the general rule or thinking is about using the pre Amp blocks? Should I be using one,where should I place it? I may eventually go down the full Amp+cab route but really want to just rock out with my band using my Amp for now. So far (2 hours use) I'm finding it great, except the delays which is a big part of my effects. I played about with a firehawk fx with the app and it seemed to have lots of options for tone tighter -darker but so far the transistor tape and couple of other delays haven't sounded as good as my boss dd-500 I want it to replace.... any tips ?