The Demon FX Gladiator Double Preamp Just is a Demon Fx preamp pedal, currently around $64.88. Close alternatives include the ISP Technologies Theta Preamp Distortion and the Boscoe Music Riab. It pairs well with the Fjord Fuzz Fjaer Spring Reverb and the Soldano SLO.

Demon FX Gladiator Double Preamp Just

Demon Fx · pedal

The Demon FX GLADIATOR DOUBLE PREAMP is a dual-channel preamp and distortion pedal from the Chinese budget effects manufacturer Demon FX, offering two independent preamp and gain stages with separate Volume, Gain, and EQ controls per channel. The dual preamp design allows switching between clean/low-gain and high-gain distortion tones for versatile live performance.

What stands out

  • “The GLADIATOR DOUBLE PREAMP delivers two independent preamp channels in one pedal, allowing switching between clean and distorted tones with separate gain and EQ settings per channel for players who want dual-voice versatility at a budget p…”

    — from the community notes

  • “The dual preamp design allows switching between clean/low-gain and high-gain distortion tones for versatile live performance”

    — from the listing

  • “Strengths: Dual independent preamp channels allow switching between clean and high-gain distortion tones with separate control sets”

    — from the reviews

  • “Budget pricing makes dual-channel preamp performance accessible”

    — from the reviews

  • “Channel switching provides versatility for live performance”

    — from the reviews

  • distortion
  • high gain
  • clean
  • dual voice versatility
  • low gain
  • stage
  • dirty
$64.88View on Reverb

Price updated Oct 23, 2026

Genres the Demon FX Gladiator Double Preamp Just is commonly used in

  • Metal
    citedInferred from shared tonal signals, not a stated genre tag.
  • Hard Rock
    citedInferred from shared tonal signals, not a stated genre tag.

Pedals that stack with the Demon FX Gladiator Double Preamp Just

Fjord Fuzz Fjaer Spring Reverb

Fjord Fuzz

19% match
$249via Reverb

gain stackingStacks two gain stages for more saturation than either produces alone. (low gain → fuzzy)

Run Fjord Fuzz Fjaer Spring Reverb into that low gain platform and it finally leans toward fuzzy

Comes earlier in the signal chain

Soldano SLO

Soldano

19% match
$119.99via Reverb

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → tight)

Feed a high gain signal into Soldano SLO and it comes out closer to tight

Electro-Harmonix Deluxe Electric Mistress

Electro-Harmonix

16% match
$200.51via 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. (high gain → shimmer)

Keep Electro-Harmonix Deluxe Electric Mistress after Demon FX Gladiator Double Preamp Just in the signal chain, clear of Demon FX Gladiator Double Preamp Just's own gain stage

Comes earlier in the signal chain

Meris Mercury7 Reverb

Meris

14% match
$299via 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. (high gain → lush)

Keep Demon FX Gladiator Double Preamp Just's high gain voice out front: Meris Mercury7 Reverb goes after Demon FX Gladiator Double Preamp Just in the signal chain so its ambient voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Free the Tone Future Factory FY-1

Free The Tone

14% match
$395.75via 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. (high gain → lush)

Free the Tone Future Factory FY-1's lush voice goes after Demon FX Gladiator Double Preamp Just in the signal chain — it's not there to compete with Demon FX Gladiator Double Preamp Just's own high gain character — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Wampler Ego Compressor

pedal

11% match

shapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain.

What Demon FX Gladiator Double Preamp Just brings here leans toward high gain — that's worth building a pairing around

Comes earlier in the signal chain

MXR CAE Wah

MXR

tonal match
$121.14via Reverb

Comes earlier in the signal chain

Put MXR CAE Wah in front of Demon FX Gladiator Double Preamp Just: a wah tracks picking dynamics best on the raw signal

JAM Pedals RetroVibe Mk.4

Jam Pedals

tonal match

Comes earlier in the signal chain

Stack JAM Pedals RetroVibe Mk.4 on top and a high gain tone tightens toward mid-forward

Cheaper alternatives

Caline CP-12 Blue Pure Sky

Caline

57% similarity
$30.88via Reverb

Shared character: high gain settings, signal chain, clean

Donner Big Mouth Distortion

Donner

48% similarity
$29.95via Reverb

Shared character: high gain settings, distortion

Boutique & premium upgrades

Airis Effects -Nemesis Preamp

Airis Effects

62% similarity
$185.72via Reverb

Shared character: high gain settings, distortion

Mooer Dual-Channel Preamp

Mooer

51% similarity
$99via Reverb

Similar role and voicing

Electronic Audio Experiments Surveyor Instrument Voicing Preamp

Electronic Audio Experiments

50% similarity
$249via Reverb

Shared character: signal chain, distortion, stage

Crowther Hot Cake

Crowther

49% similarity
$209.21via Reverb

Shared character: high gain settings, distortion

Catalinbread Sabbra Cadabra Blackout

Catalinbread

49% similarity
$145via Reverb

Shared character: live performances, high gain settings

Revv Amplification Mauler

Revv

48% similarity
$249via Reverb

Shared character: high gain settings, distortion

Similar charactersee all similar tone character →

ISP Technologies Theta Preamp Distortion

Isp Technologies

61% similarity

Shared character: high gain settings, distortion, stage

Boscoe Music Riab

Boscoe Music

56% similarity

Shared character: signal chain

Mooer Micro Preamp 16 Phoenix

Mooer

54% similarity

Shared character: high gain settings

Mooer 001

Mooer

54% similarity

Shared character: two channels, high gain settings

Caline CP-16 MR. Mark

Caline

53% similarity

Shared character: high gain settings, signal chain, distortion

JHS Colour Box V2

JHS Pedals

49% similarity

Shared character: distortion, clean, stage

See all alternatives to the Demon FX Gladiator Double Preamp Just (cheaper + boutique) →

Questions people ask

What are good alternatives to the Demon FX Gladiator Double Preamp Just?+

The closest matches in character are the ISP Technologies Theta Preamp Distortion, the Boscoe Music Riab, the Mooer Micro Preamp 16 Phoenix. Budget picks: Caline CP-12 Blue Pure Sky, Donner Big Mouth Distortion. Boutique upgrades: Airis Effects -Nemesis Preamp, Mooer Dual-Channel Preamp, Electronic Audio Experiments Surveyor Instrument Voicing Preamp.

What pairs well with the Demon FX Gladiator Double Preamp Just?+

Strong matches from rig and tone-complementarity evidence: Fjord Fuzz Fjaer Spring Reverb, Soldano SLO, Electro-Harmonix Deluxe Electric Mistress — Run Fjord Fuzz Fjaer Spring Reverb into that low gain platform and it finally leans toward fuzzy.

How much does the Demon FX Gladiator Double Preamp Just cost?+

Around $64.88 (live listing price, updated Oct 23, 2026).

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