Up to 25% Off Select Gear With Code: SPOOKY
Looking for Coupons?Call us Hablamos Español
MF MD HG01 Halloween Store 10-11-17
T-Rex Engineering Logo
501751 000000000

T-Rex Engineering Gristle King Guitar Effects Pedal

  • Write a Review

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...Click To Read More About This Product

Available 11-27-2017

Gold Coverage: (What’s This?)
  • Shipping (48 Contiguous U.S. States)
  • Your Price :
  Reserve Now Notify Me When This is in Stock
Add to Wish List

Earn up to 2,240 reward points.

See All T-Rex Engineering Distortion & Overdrive Effects Pedals

Two great effects in one unit.

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' best musicians. Their approach blends hi- tech innovation with old-world craftsmanship “ always in the service of killer tone.

  • Input Impedance @ 1 KHz: > 1 megohm
  • Output Impedance @ 1 kHz: < 10kOhm
    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)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars



Reviewed by 2 customers

Displaying reviews 1-2

Back to top

(2 of 2 customers found this review helpful)


Phenomenal overdrive pedal!*****

By Texasborn&proud

from SoCal

About Me Experienced

See all my reviews


  • 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.

    (2 of 3 customers found this review helpful)


    All Hail the Gristle King!

    By Kit Strong

    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.

    Displaying reviews 1-2

    Back to top

    You are changing the Ship-To country.

    Our product catalog varies by country due to manufacturer restrictions. If you change the Ship-To country, some or all of the items in your cart may not ship to the new destination.