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Product 501751

T-Rex Engineering Gristle King Guitar Effects Pedal   

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The T-Rex Engineering Gristle King Effects Pedal was developed especially for Greg Koch. The Gristle King offers you a wide variety of boost and over...Read More

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The T-Rex Engineering Gristle King Effects Pedal was developed especially for Greg Koch. The Gristle King offers you a wide variety of boost and overdrive possibilities. The Gristle, Tone, Gravy and Flavour controls and 2 toggles dial in just the tone you're looking for. The T-Rex Gristle King pedal gives you 2 effects, plus extra tonal possibilities, in one compact stompbox.

Like the tasty combination of chocolate and peanut butter, the Gristle King is a combination of the DGTM and a tone-filled boost circuit. This combination offers you a wide variety of boost and overdrive possibilities.


Use this control to set the amount of gain desired.

Sets the tone of the overdrive.

Sets the boost level.

This feature places the boost either before or after your overdrive. Use the Pre setting to give you an additional boost in the level of gain. Use the post set- ting to boost the volume of the signal, such as a lead boost.

Selects between a throaty open type of overdrive (right), or a more compressed type of overdrive sound (left).

With this switch toggled to the right, there is an increase in the low end of the overdrive effect.
The Gristle and More foot switches turn on the repective effects. Each effect can be used separately or in combination.

The Gristle pedals were all born in the US as a result of the cooperation between technician Tim Jauernig and guitar player Greg Koch. T-Rex adopted the Gristle pedals and they are now official members of the T-Rex pedal family.

Based in Vejle, Denmark, T-Rex Engineering makes classic and signature effects pedals for the world™s best musicians. Their approach blends hi- tech innovation with old-world craftsmanship “ always in the service of killer tone.

Two great effects in one unit.

  • Input Impedance @ 1 KHz: 1 megohm
  • Output Impedance @ 1 kHz: Power supply: 9V DC
  • Minimum Power supply Voltage: 8V DC
  • Maximum Power supply Voltage: 12.5V DC
  • Current Draw @ 9V DC: 12 mA
  • Maximum input signal Vp/p: 3 Vp/p
  • Battery Type: 9V battery 6F22
  • Battery Life: 12 to 16 Hours
  • External connectors: Input Jack. Output Jack, 9V DC Jack
  • Controls: Gristle (On/Off), More switch, Gristle (distortion), Tone, Gravy (volume), More, Pre/Post, Flavor
  • Dimensions: 5" W x 2-1/4" H x 3-7/10" D
  • Weight with Power supply: .88 lb.

Review Snapshot®

by PowerReviews
T-Rex EngineeringGristle King Guitar Effects Pedal

(based on 2 reviews)

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Reviewed by 2 customers

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(2 of 2 customers found this review helpful)


Phenomenal overdrive pedal!*****


from SoCal

About Me Experienced


  • Compact Design
  • Custom Shop Quality
  • Excellent Sound Quality
  • Good Selection Of Effects
  • Responsive
  • Versatile


    Best Uses

    • Boost Or Drive
    • Events
    • Performances
    • Professional Recording

    Comments about T-Rex Engineering Gristle King Guitar Effects Pedal:

    Overdrive or boost, this pedal lacks nothing! Transparent or dirty, the whole spectrum! I started playing this thru my Silverface Deluxe and was blown away. Most pedals don't compliment both guitar and amp. This gives you options and quality sound, with a permanent place in your rig for any style.

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    (2 of 3 customers found this review helpful)


    All Hail the Gristle King!


    from Under The Bridge

    Comments about T-Rex Engineering Gristle King Guitar Effects Pedal:

    The Gristle King is quickly becoming my favorite pedal on my board. For light bluesy crunch, to claaic rock, and beyond, this is one OD pedal that can cover many styles with aplomb. In a crowded field full of top notch overdrive pedals the Gristle King definitely holds its own.
    The Gristle King is an extremely versatile pedal. Between the Pre/Post poisioning of the Boost switch, the Flavor switch which basically gives you 2 completely different Overdrive sounds, and the phat switch to thicken up anemic single coils in addiitio to the normal OD/Boost controls this pedal provides a plethora of tones and should please the inner-tweaker in everyone.
    Metal casing, high quality switches, etc.. what's not to like.
    The price might seem a bit steep at first glance but considering all this pedal can do I think it's actually a pretty good bargain.

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