Overview:

Since its introduction, the TightRock has been very popular, but as usual Amptweaker received many requests for a variation.....the new Amptweaker  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 EQ switch converts the tone from the TightDrive EQ to a new PlexEQ which gives the pedal the classic vintage stack tones....a little less mids, and the classic 412 bottom, but this FatRock version doesn't add as much sizzle as the TightRock PlexEQ does. The Gain Boost switch modifies the gain from a classic distortion sound to a very modern amount of gain, but doesn't color the sound of your amp as much as the TightMetal.  With the Gain Boost and EQ turned off the pedal can be used as a fat overdrive for an already distorted amp or pedal, without changing the character very much.  The TightRock noise gate has also been retweaked to make it smoother, and to sound better with the reduced highs of the FatRock to allow it to work better for solos.
• A new cool Amptweaker feature is the SideTrak™ effects loop.Several consumer requests led to this extra effects loop that turns OFF when the pedal is ON.  Since the FatRock makes such a good ‘solo’ pedal, it’s the perfect pedal to include this unique idea.
• It 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 sound...all without having to hit more than one switch....it’s like having a built-in A/B box.  A green LED alternates with the normal red one to indicate that the loop is active when the pedal is bypassed.     
• Another cool SideTrak trick is that if you only plug in the SideTrak Send, and don't plug in the Return, then that Sent dry signal can be sent to another amp.....meaning you could have the FatRock going through a 412 halfstack while sending the clean tone to a Twin or some other clean amp.  All this ability comes from two simple jacks on the side of the pedal!
• All other features from the TightRock remain intact, including the Effects Loop with its Pre/Post switch, the LED illumination of the controls, and the Battery On/Off switch and magnetic battery access door. The rear effects loop send can also be used as a clean guitar send for re-amping in the studio if switched to Pre.