DSM Noisemaker OmniCabSim

A tweakable cabinet simulator for both guitar and bass.
Original FSB thread and still unverified schematic available here.

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Marshall 3005 Preamp

The Marshall 3005 Lead 12 was a mini-stack with a 12 watt solid state head made in England between 1988 and 1991. People claim it's a great amp and can get vintage Marshall sounds from it, and that it takes overdrives really well.

One note in the amp the preamp was powered by +16V/-16V so you'll want to build a bipolar power board.

JHS Angry Charlie V3

Original FSB thread available here.

Marshall Plexi 1987x

Next, t Marshall Plexi 1987x.

With a switch to go between channels

With 2 separate inputs like the amp

With both channels jumpered

Marshall 1992 Super Bass

Next, the Marshall 1992 Super Bass

With a switch to go between channels

With 2 separate inputs like the amp

With both channels jumpered

Marshall JCM800 Super Lead

Next up we have the Marshall JCM800 Super Lead.

With a switch to go between channels

With 2 separate inputs like the amp

With both channels jumpered

Fender Bassman 5F6 Preamp

Alright ladies and gentlemen I finally had some time on my hands to relax and kick out a bunch of new layouts and since a lot of you out there have been playing around with those little Class D amps I thought I would be nice to have some more preamps based on amps we all know and love. First off the amp that gave birth to the likes of Marshall, Laney, Vox, and many others. It's the Fender Bassman 5F6. If you are unaware this is the amp that has essentially been copied and modified by every amp company.

With a switch to go between channels

With 2 separate inputs like the amp

With both channels jumpered