JFET approximation of the Mesa Boogie Mark I preamp. Probably sounds nice 🙂 Update (05.05.2013): Now verified as working, both by myself and Derek. Thanks
Category: Preamp emulator
![](https://www.sabrotone.com/wp-content/uploads/2013/04/DR103preamp.gif)
Update (16.12.14): Now verified as working, thanks to jay 🙂
![](https://www.sabrotone.com/wp-content/uploads/2011/11/ModernSLO100.gif)
There’s been a few requests for this preamp circuit and I finally got around to it. I based this on a schematic I’m not really
![JCM800 vero layout](https://www.sabrotone.com/wp-content/uploads/2010/04/JCM800-Emulator-vero.gif)
Vero layout of the Marshall JCM-800 preamp emulator.
![Dr. Boogey vero layout](https://www.sabrotone.com/wp-content/uploads/2010/04/DrBoogey.gif)
Here’s a vero layout for the preamp emulator of the Mesa Boogie Dual Rectifier.
![Boogeyman vero layout](https://www.sabrotone.com/wp-content/uploads/2010/04/Boogeyman.gif)
Vero layout for the “Boogeyman”, a Mesa Boogie Mark IIc+ preamp emulator.
![](https://www.sabrotone.com/wp-content/uploads/2011/04/MarkIVLead.gif)
Based on a schematic of the Mesa Boogie Mark IV I found floating around the Internet and the owner’s manual I put together a schematic
![](https://www.sabrotone.com/wp-content/uploads/2011/01/Seventheaven.gif)
Mamat wanted to see a vero layout for the “Seventheaven” Bogner Ecstacy preamp emulator, and here it is. It’s not verified as of now, but
![](https://www.sabrotone.com/wp-content/uploads/2010/09/Bad-Cat-Hot-Cat-emulator-v2.gif)
Having built the Bad Cat Mini II amp, and given how happy I am about that one, I’m contemplating building a 30W Hot Cat amp