Proco Fatrat

I bought this because I wanted a thicker sounding proco rat sound. Having owned several iterations of the rat pedal in the past, I thought I would give this one a go. A good year or so down the line, I have decided that although this pedal has its uses it is overpriced.

Pros:
Classic rat tone, with the ability to dial in the tone more specifically. Switches are handy for cutting through the mix or thickening the sound of the dirt pedal. It works well with humbuckers or single coils.

Cons:
The price. A lot of people are opting for the cheaper clones you see around that can do the same thing.

Further Information:
This is great for thick 90's dirt tones. The rat voiced pedals are popular with grunge and indie bands, and is a useful in front of a clean amp. The Fat Rat is probably the best of the bunch, as it can cover most of the ground the other pedals are trying to achieve.

First of all i already like the way the original RAT sounds on guitars and i was on the lookout for a distortion pedal for my synths.
Well the name says it all. It can go very low and it can compliment (or obliterate) a synth especially when creating bass sounds. Very cool sound, it has the grit and the 3D feeling i was looking for.
I've also tried it with a bass guitar and the results were amazing.
Although it operates on a 9V power supply if you have a 18V one use it. It helps with headroom a lot.

I got fatrat as a fan of '80 rat sound and i was really curious how the new features (fat & mosfet) could affect the sound of my rickenbacker 4003. Well, the result is really awesome. The "fat" mode is the way to go for the bass. The "mosfet" mode makes the sound more wide and soft. though I found out that the "stock" (not "mosfet") keeps more the attack of playing. Depending of the needs i switch it to "mosfet" but i mostly play with "stock".
Also, it is remarkable (as in all rats) that with just 2 knobs and a volume knob you can make out various sounds, from clean with little dirt to real distorted and fuzzy.
A very very interesting thing is that the op amp is socketed. +1 to the open minded people of proco for adding this option. So, if desired, the replacement of the op amp with others is really easy. I did change it with the legendary lm308n and believe me it is worthy doing this. The sound with the stock op amp is really good but lm308n gave this pedal really better fuzzy low end.