The Line 6 Helix (and HX Stomp) is patch-based, so the tone lives in the blocks you choose, not fixed knobs. The two decisions that matter most are the amp model and the cab or IR. Here is a signal chain and model picks for each genre.
Build the signal chain. A reliable order: <b>Noise Gate → Drive (optional) → Amp → Cab/IR → EQ → Delay → Reverb</b>. Use the combined Amp+Cab block to save DSP, or split them so you can load a third-party IR.
Metal / high-gain. Amp <b>Placater Dirty</b> (Friedman BE) or <b>Cali Rectifire</b> (Dual Rec). Keep Drive around 5–6 — Helix amps are sensitive, so max drive just gets fizzy. Put a <b>Minotaur</b> or <b>Green Scream</b> (Klon/TS) in front with low drive and level up to tighten the low end. Cab: a 4x12 with a V30-style IR. Add a Noise Gate and a high-cut around 8 kHz on an EQ block.
Rock / hard rock. Amp <b>Brit Plexi</b> or <b>Brit 2204</b> (Marshall). Drive 5–6, Master up for power-amp grind, mids up. A little delay and spring reverb.
Blues / classic rock. Amp <b>US Deluxe</b> (Fender Deluxe) or <b>Brit Trem</b> at edge of breakup. Drive 3–4, ride your guitar volume; a light drive pedal in front for solos.
Clean. Amp <b>US Double Nrm</b> (Fender Twin) or <b>US Deluxe</b>. Drive 1–2, bright and dynamic — great as a pedal platform. Add chorus and a plate/spring reverb.
Cabs and IRs make or break it. Most "bad Helix tone" is the cab, not the amp. If the stock cabs sound boxy, load a quality IR and set a high-cut (6–9 kHz) plus a low-cut (~80–100 Hz) — that removes fizz and mud fast.
💡 On the Helix the amp MODEL and the CAB/IR matter most — pick the model by genre (Plexi for rock, Placater/Rectifire for metal, US Double for clean), keep Drive moderate, and fix fizz with a high-cut on the cab rather than turning down gain.
What are the best Line 6 Helix settings for metal?
What are the best Line 6 Helix settings for metal?
Use a high-gain amp model like Placater Dirty or Cali Rectifire with Drive around 5–6 (not maxed), add a tube-screamer-style block (Green Scream/Minotaur) in front with low drive to tighten the lows, a 4x12 V30-style cab or IR, a noise gate, and a high-cut around 8 kHz to kill fizz.