Amptweaker FatRock


In Stock Now

To add this product to your wish list you must sign in or create an account.


Since its introduction, the TightRock has been very popular, but as usual Amptweaker received many requests for a variation.....the new FatRock is the culmination of discussions on online forums, from players who wanted a warmer version that worked better with brighter guitars and amps. All features are identical to the TightRock, but the tone has been tweaked to extend the low range of the Tight and Tone controls, add a fixed Fat boost at the frontend for a slightly less aggressive attack, knocking the edge down, and boosting the lowend in the output EQ

The SideTrak™ effects loop is a popular Amptweaker exclusive feature. This extra effects loop turns OFF when the pedal is ON and can be used to add a compressor, chorus or chain of effects that only works when you play clean, or to switch to another distortion pedal to use for the rhythm or lead sound...all without having to hit more than one’s like having a built-in A/B box. Standard effects loop with Pre/Post switch is also included on the back, as well as the LED illumination of controls, Battery On/Off switch, and magnetic battery access door.

Customer Reviews

Based on 2 reviews Write a review

Technical Specification

True Bypass switch
Tight Attack Control
Gain, Tone, & Volume Controls
Noise Gate with auto threshold based on gain
EQ switch with PlexEQ setting
Gain Boost switch
EFX Loop with Pre/Post switch..tracks On/Off Ftsw
SideTrak™ EFX loop that works when pedal is bypassed!
LED lit knobs when using a power supply
Battery disconnect switch with red indicator
Current: 12mA with 9V battery, 28mA with 9V adapter
Works with 9V-18V supplies–like 'variacing' your amp up and down
DC Adapter jack, standard 2.1mm X 5.5mm, center ground(-)
Magnetic Battery access door opens w/o tools
Handmade in the USA



Sold Out