The Chaos Custom Shop Sub Sonic Filter is a Chaos Custom Shop eq pedal, currently around $52.77. Close alternatives include the dpFX Pedals Variable Low Pass Filter and the Empress Para EQ DLX. It pairs well with the Friedman Dirty Shirley and the Marshall Origin 20 Combo.

Chaos Custom Shop Sub Sonic Filter

Chaos Custom Shop · pedal

The Chaos Custom Shop Sub Sonic Filter is a specialized low-cut filtering pedal for bass, designed to remove ultra-low, inaudible sub-frequencies that can waste amplifier headroom, cause speaker excursion issues, or muddy a mix without adding any audible tonal benefit. Built by Chaos Custom Shop, a boutique maker specializing in precise bass signal-shaping tools, it offers a more targeted solution than a general high-pass filter for extreme low-frequency content.

What stands out

  • “The Chaos Custom Shop Sub Sonic Filter is a specialized low-cut filtering pedal for bass, designed to , inaudible sub-frequencies that can waste amplifier headroom, cause speaker excursion issues, or muddy a mix”

    — from the listing

  • “Built by Chaos Custom Shop, a boutique maker specializing in precise bass signal-shaping tools, it offers a more targeted solution than a general high-pass filter for extreme low-frequency content”

    — from the listing

  • “Valued for addressing a specific, often-overlooked bass tone problem: inaudible sub-sonic frequencies that still consume amplifier power and can cause speaker damage or excessive cone movement”

    — from the community notes

  • “Sub-sonic filtering targets frequencies below the audible range, protecting speakers and amplifier headroom”

    — from the reviews

  • “Primary use case is bassists wanting to protect their speakers and amp headroom while keeping their actual audible low end intact, distinct from a standard high-pass filter cutting a broader range”

    — from the community notes

  • headroom
  • high pass
  • filter
  • sub
  • cut
  • mix
  • bass
  • low end
$52.77View on Reverb

Price updated Oct 23, 2026

Genres the Chaos Custom Shop Sub Sonic Filter is commonly used in

  • Bedroom Pop
    citedInferred from shared tonal signals, not a stated genre tag.
  • Soul
    citedInferred from shared tonal signals, not a stated genre tag.

Amps that pair well with the Chaos Custom Shop Sub Sonic Filter

Friedman Dirty Shirley

Friedman

25% match

Friedman Dirty Shirley's own crunchy character is the real reason this is worth trying

Comes later in the signal chain

Marshall Origin 20 Combo

Marshall

23% match
$649via Reverb

What Marshall Origin 20 Combo brings here leans toward crunchy — that's worth building a pairing around

Comes later in the signal chain

Bogner Ecstasy Mini 30W

Bogner

tonal match

Comes later in the signal chain

Put Bogner Ecstasy Mini 30W after Chaos Custom Shop Sub Sonic Filter

Marshall DSL1CR 1x8 1-Watt Combo

Marshall

tonal match

Comes later in the signal chain

Marshall DSL1CR 1x8 1-Watt Combo goes after Chaos Custom Shop Sub Sonic Filter in the chain

Blackstar Series One 45

Blackstar

tonal match
$814.95via Reverb

Comes later in the signal chain

Blackstar Series One 45's warm balances out the bright tone

Blackstar HT Stage 100H MK III Snakeskin

Blackstar

tonal match
$876.08via Reverb

Comes later in the signal chain

Blackstar HT Stage 100H MK III Snakeskin goes after Chaos Custom Shop Sub Sonic Filter in the chain

Blackstar HT20 Mk. II 20 Watt Combo

Blackstar

tonal match

Comes later in the signal chain

Put Blackstar HT20 Mk. II 20 Watt Combo after Chaos Custom Shop Sub Sonic Filter

Hiwatt Crunch 150R 112C

Hiwatt

tonal match

Comes later in the signal chain

Hiwatt Crunch 150R 112C goes after Chaos Custom Shop Sub Sonic Filter in the chain

Pedals that stack with the Chaos Custom Shop Sub Sonic Filter

Airis Effects SPEC-Defier

Airis Effects

22% match
$169via Reverb

What Airis Effects SPEC-Defier brings here leans toward high gain — that's worth building a pairing around

Comes later in the signal chain

Ibanez Pentatone Preamp

Ibanez

22% match

What Ibanez Pentatone Preamp brings here leans toward saturated — that's worth building a pairing around

Comes later in the signal chain

Binson Echorec Delay

Binson

13% match

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Run Binson Echorec Delay after Chaos Custom Shop Sub Sonic Filter in the signal chain, where it won't crowd Chaos Custom Shop Sub Sonic Filter — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Eventide Modulated Delay

Eventide

10% match

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Run Eventide Modulated Delay after Chaos Custom Shop Sub Sonic Filter in the signal chain, where it won't crowd Chaos Custom Shop Sub Sonic Filter — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Source Audio L.A. Lady

Source Audio

tonal match

Comes earlier in the signal chain

Source Audio L.A. Lady goes in front of Chaos Custom Shop Sub Sonic Filter in the chain

Donner Big Mouth Distortion

Donner

tonal match
$29.95via Reverb

Comes earlier in the signal chain

Put Donner Big Mouth Distortion in front of Chaos Custom Shop Sub Sonic Filter

Dophix Dante

Dophix

tonal match
$236.30via Reverb

Comes earlier in the signal chain

Put Dophix Dante in front of Chaos Custom Shop Sub Sonic Filter

NuX Drive Force

Nux

tonal match
$46.90via Reverb

Comes earlier in the signal chain

NuX Drive Force goes in front of Chaos Custom Shop Sub Sonic Filter in the chain

Cheaper alternatives

BLAXX EQ5B 5-Band Equalizer

Blaxx

48% similarity
$31.35via Reverb

Shared character: mix, bass

CNZ Audio GEQ-5

Cnz Audio

46% similarity
$44.99via Reverb

Shared character: headroom, mix

Boutique & premium upgrades

Chaos Custom Shop HPF

Chaos Custom Shop

71% similarity
$69.18via Reverb

Shared character: filter, mix, bass

Lazy Bear Effects High Pass Filter

Lazy Bear Effects

57% similarity
$90.88via Reverb

Shared character: filter, mix, bass

Chaos Custom Shop Crossover

Chaos Custom Shop

52% similarity
$134.85via Reverb

Shared character: bass

Maxon AF-9 Auto Filter

Maxon

52% similarity
$263.83via Reverb

Shared character: filter, bass

Dirty Haggard Audio Mid-Band

Dirty Haggard Audio

50% similarity
$125via Reverb

Shared character: mix, bass

Fairfield Circuitry Long Life

Fairfield Circuitry

50% similarity
$348.39via Reverb

Shared character: filter

Similar charactersee all similar tone character →

dpFX Pedals Variable Low Pass Filter

Dpfx Pedals

58% similarity

Shared character: filter, mix

Empress Para EQ DLX

Empress

54% similarity

Shared character: filter, headroom

SB|LB Pedals Freq Boost

SB|LB Pedals

42% similarity

Shared character: mix

Creation Audio Labs Funkulator

Creation Audio Labs

93% similarity

similar tone character

Vox V847 Wah

Vox

90% similarity

similar tone character

See all alternatives to the Chaos Custom Shop Sub Sonic Filter (cheaper + boutique) →

Questions people ask

What are good alternatives to the Chaos Custom Shop Sub Sonic Filter?+

The closest matches in character are the dpFX Pedals Variable Low Pass Filter, the Empress Para EQ DLX, the SB|LB Pedals Freq Boost. Budget picks: BLAXX EQ5B 5-Band Equalizer, CNZ Audio GEQ-5. Boutique upgrades: Chaos Custom Shop HPF, Lazy Bear Effects High Pass Filter, Chaos Custom Shop Crossover.

What pairs well with the Chaos Custom Shop Sub Sonic Filter?+

Strong matches from rig and tone-complementarity evidence: Friedman Dirty Shirley, Marshall Origin 20 Combo, Bogner Ecstasy Mini 30W — Friedman Dirty Shirley's own crunchy character is the real reason this is worth trying.

How much does the Chaos Custom Shop Sub Sonic Filter cost?+

Around $52.77 (live listing price, updated Oct 23, 2026).

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