Dark isn't one tone. There's dark-and-smooth, dark-and-thick, and dark-and-broken, and they're reached through completely different controls. All three below, with the mechanism named rather than guessed.
The four levers that actually darken this rig
Turning every tone knob down gets you muffled, not dark. Muffled is dull and lifeless; dark still has presence and detail, it's just weighted low. The difference is which stage you remove the top at.
The single most effective darkening control on the board, and it's designed for exactly this. OD mode has a permanently engaged treble roll-off and a tighter low end, and the VOICE switch selects between three different amounts of that roll-off. Origin's own darkest position is DRK. This is a proper console-style darkening at the end of the chain, not a tone knob fighting a gain stage.
Two documented mechanisms in one box. Hudson state that at higher Gain Trim settings the high end is gently rolled off — so pushing the trim darkens as it drives. And the Low Cut filter sits upstream of the distorting transistor, meaning it also acts as a gain control: bright input yields cleaner, better-defined breakup, bass-heavy input yields thicker distortion. Low Cut down is therefore the thickening move, not just a bass knob.
SPARKLE is a peaking boost centred around 6 kHz. That's exactly the band that reads as bite and crunch. Turning it down removes the specific frequency that makes the pedal sound aggressive, without touching the Tone control at all — so you keep the pedal's full range and just lose the edge.
Suhr specify the Badger's Bass, Middle and Treble as post-gain and passive cut-style. Low settings mean more cut, not less boost, and the controls interact. Suhr also advise pulling Bass back as Gain and Drive rise. So on a dark patch you cannot just wind Treble to zero and add Bass to compensate — that's the route to muffled. Treble low, Middle held up, Bass restrained.
Three kinds of dark, in signal order
Dark and smooth. Almost clean, thick as felt, no bite anywhere. The one you play ballad heads and chord melody on. All the darkness comes from filtering, none from saturation.
PRS Custom 24 · neck humbucker · guitar tone at 7Dark and thick. Heavily saturated, low-weighted, sustaining forever, with the 6 kHz bite surgically removed. This is the lead voice — huge but not harsh, and it will still cut because the mids are intact.
Suhr Modern Plus · neck humbucker · guitar tone wide openDark and broken. Gated, spitty, degraded — dark by damage rather than by filtering. The valve is deliberately starved. Not a lead tone, a texture, and the least controllable thing in the pack.
Suhr S · bridge · ML Landau single-coilTwo things that will undo all of it
A long bright reverb on a dark dry tone doesn't sound atmospheric, it sounds like two different guitars. Pull BigSky's Tone down on all three patches and let the wet leg sit under the dry rather than over it. Mix stays fully wet regardless — that rule doesn't change just because the patch did.
Dark tones flatter themselves in isolation and vanish the moment anything else is playing. If you're dialling these on your own, put a backing track underneath before you commit — the Middle control on the Badger is usually the thing that needs to come back up.