The Walrus Audio Defcon 4 Boost is a Walrus Audio boost pedal, currently around $299. Close alternatives include the One Control Granith Grey Booster V2 and the Vox TG1-FL4BT Flat 4 Boost. It pairs well with the Engl Savage 120 Mark II E610II 120 Watt 4 Channel Tube and the Laney GH100L.

Walrus Audio Defcon 4 Boost

Walrus Audio · pedal

The Walrus Audio Defcon 4 is a mini boost pedal from Walrus Audio of Oklahoma City, Oklahoma, delivering transparent clean boost with minimal coloration in Walrus Audio's premium build quality in a compact format.

What stands out

  • “The Walrus Audio Defcon 4 is a mini boost pedal from Walrus Audio of Oklahoma City, Oklahoma, delivering transparent clean boost with”

    — from the listing

  • “Build quality is excellent”

    — from the community notes

  • “Walrus Audio's mini clean boost, praised for transparent boost with”

    — from the community notes

  • “Transparent boost suits solo level increase and amp driving”

    — from the reviews

  • “Players who want premium clean boost in compact format find the Defcon 4 an excellent option”

    — from the community notes

  • clean boost
  • transparent
  • boost
  • walrus audio
  • amp driving
  • compact format

Price updated Oct 23, 2026

Genres the Walrus Audio Defcon 4 Boost is commonly used in

  • Country
    citedInferred from shared tonal signals, not a stated genre tag.

Amps that pair well with the Walrus Audio Defcon 4 Boost

Engl Savage 120 Mark II E610II 120 Watt 4 Channel Tube

Engl

18% match
$3169.99via Reverb

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (transparent → mid-forward)

Into a transparent tone, Engl Savage 120 Mark II E610II 120 Watt 4 Channel Tube brings a pull toward mid-forward that's missing

Comes later in the signal chain

Laney GH100L

Laney

18% match

Laney GH100L leans this transparent tone toward low gain, which it doesn't make on its own

Comes later in the signal chain

Synergy SL2 Module

Synergy

tonal match

Comes later in the signal chain

Into a transparent tone, Synergy SL2 Module brings a pull toward high gain that's missing

Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt

Mesa Boogie

tonal match

Comes later in the signal chain

Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt leans this transparent tone toward high gain, which it doesn't make on its own

Egnater Tweaker 88 Head

Egnater

tonal match

Comes later in the signal chain

Egnater Tweaker 88 Head leans this transparent tone toward low gain, which it doesn't make on its own

Ceriatone 2202H

Ceriatone

tonal match

Comes later in the signal chain

Into a transparent tone, Ceriatone 2202H brings a pull toward high gain that's missing

Carol-Ann OD-2R

Carol Ann

tonal match

Comes later in the signal chain

Carol-Ann OD-2R leans this transparent tone toward medium gain, which it doesn't make on its own

Marshall Studio JCM900 SN20H

Marshall

tonal match

Comes later in the signal chain

Marshall Studio JCM900 SN20H leans this transparent tone toward high gain, which it doesn't make on its own

Pedals that stack with the Walrus Audio Defcon 4 Boost

Wren and Cuff Box of War OG

Wren And Cuff

16% match
$297.57via Reverb

Wren and Cuff Box of War OG leans this transparent tone toward fuzzy, which it doesn't make on its own

Comes later in the signal chain

EarthQuaker Devices Hizumitas

EarthQuaker Devices

16% match

EarthQuaker Devices Hizumitas leans this transparent tone toward high gain, which it doesn't make on its own

Comes later in the signal chain

Earthquaker Devices Pyramids Stereo Flanging Device

EarthQuaker Devices

12% match
$282.69via Reverb

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

Keep Earthquaker Devices Pyramids Stereo Flanging Device after Walrus Audio Defcon 4 Boost in the signal chain, clear of Walrus Audio Defcon 4 Boost's own gain stage

Comes later in the signal chain

Xotic SP Compressor

Xotic

10% match
$147via Reverb

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (transparent → mid-forward)

Xotic SP Compressor leans toward smooth, and that's a real, usable character to pair with

Comes earlier in the signal chain

JHS 3 Series Oil Can Delay

JHS Pedals

6% 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.

Keep Walrus Audio Defcon 4 Boost's clean boost voice out front: JHS 3 Series Oil Can Delay goes after Walrus Audio Defcon 4 Boost in the signal chain so its modulated voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Walrus Audio Slö Multi-Texture Reverb

Walrus Audio

6% match
$209.51via Reverb

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

Put Walrus Audio Slö Multi-Texture Reverb after Walrus Audio Defcon 4 Boost in the signal chain, clear of Walrus Audio Defcon 4 Boost's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Dr. Scientist Frazz Dazzler V2

Dr Scientist

tonal match
$203.84via Reverb

Comes later in the signal chain

Into a transparent tone, Dr. Scientist Frazz Dazzler V2 brings a pull toward fuzzy that's missing

Warm Audio Jet Phaser

Warm Audio

tonal match
$109.24via Reverb

Comes later in the signal chain

Put Warm Audio Jet Phaser after Walrus Audio Defcon 4 Boost: modulation sits after the gain for a defined swirl

Cheaper alternatives

Similar charactersee all similar tone character →

See all alternatives to the Walrus Audio Defcon 4 Boost (cheaper + boutique) →

Questions people ask

What are good alternatives to the Walrus Audio Defcon 4 Boost?+

The closest matches in character are the One Control Granith Grey Booster V2, the Vox TG1-FL4BT Flat 4 Boost, the TC Electronic Rush Booster. Budget picks: One Control Granith Grey Booster, One Control Raspberry Booster, Wampler Decibel Plus Buffer Boost.

What pairs well with the Walrus Audio Defcon 4 Boost?+

Strong matches from rig and tone-complementarity evidence: Engl Savage 120 Mark II E610II 120 Watt 4 Channel Tube, Laney GH100L, Synergy SL2 Module — Into a transparent tone, Engl Savage 120 Mark II E610II 120 Watt 4 Channel Tube brings a pull toward mid-forward that's missing.

How much does the Walrus Audio Defcon 4 Boost cost?+

Around $299 (live listing price, updated Oct 23, 2026).

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