Fulltone Fat Boost with trimmer option

Barcode · Post by **Barcode** » 26 Aug 2008, 04:05

MarkM had a great layout for this one, but i wanted the option to use trimpots so i could use it as a knob free booster driving a distortion on a switch. layout provides for either trimmers or regular pots, and i shrunk the original layout a bit too.

kokohi5 · Post by **kokohi5** » 08 Sep 2008, 17:33

Looks pretty cool. I built the GGG Boutique Boost which I think is pretty much the same thing. It's a great clean boost. I love how you can adjust the input gain.
I didn't see it labeled on your layout, but should 2 on the volume also be the out?

Barcode · Post by **Barcode** » 09 Sep 2008, 00:08

kokohi5 wrote:Looks pretty cool. I built the GGG Boutique Boost which I think is pretty much the same thing. It's a great clean boost. I love how you can adjust the input gain.
I didn't see it labeled on your layout, but should 2 on the volume also be the out?

yes, sorry for not labelling that. there is a solder pad for it just below that trimmer, but i forgot to label

Post by **modman** » 09 Sep 2008, 12:10

This is an oldie

The first Fulltone Fat Boost was almost a carbon copy of Orman's Minibooster, see here. Fuller only added a guitar volume pot on the input of the effect - silly because you already paid for one in your guitar

- same for the tone control at the end. That's why I would still not be more than a Minibooster

But there are Russian occurences of this type of circuit for fets from before Orman's Mini, and in fact it's just tube technology applied to fets, as you can all read here

When Paul Cochrane published his Fat Bastard mods on diystompboxes.com, Fuller jumped on the design and even included Paul's ad lib suggestion of an output buffer in the Fulltone Fat Boost V2

So I think it would be more useful to work on the basis of either the crude minibooster or the Fat Bastard, for which PaulC has supplied some hints for improvements in this thread.