robust pre-amp pedal?

[eniacmike]

I have a friend who is looking for a deluxe preamp pedal with a 3 band eq and a presence not unlike the dr. boogie but not as high gain as the dr. boogie. he's using an old fender p.a. and it doesn't have a whole lot of tone shaping. does anybody know any diy projects out there that do this kind of thing.

[jkokura]

Go check out Run Off Groove (ROG). They have tonnes of preamp and emulation circuits available. I have the ac30 and dc30 boards I've yet to build, but they're gonna be the closest out there as far as I know.

Jacob

[aziltz]

you're going to want a speaker simulator on the output, for going direct.  Either a filter on the output or a standalone box, for direct into PA.

[Myramyd]

BYOC has a Parametric EQ with boost. I would think that would work. You could choose any frequencies you want with that. Otherwise, there is also a SansAmp clone on the Tonepad site. It's only a two-band EQ but it "simulates" amps (never tried it).

There are lots of preamp simulation circuits out there. I've seen a vero layout of a Mesa Boogie MkIIc+ preamp (Boogeyman). That might be closer to what he wants. I would think it would be lower gain but somewhat in the ballpark.

Also the runoffgroove projects as mentioned above.

Maybe there is a way to reduce the gain with some component replacements on the Chunk Chunk as well?

J

[Myramyd]

you're going to want a speaker simulator on the output, for going direct.  Either a filter on the output or a standalone box, for direct into PA.

Yeah, you would want to know if he's running that as a PA into full-range PA speakers or using the Fender PA as a head going into a guitar cabinet. If it's a straight up full-range PA, you might need some kind of speaker simulation to get it more "guitar-like."

Some of the runoffgroove projects would apply here, along with the SansAmp project.

Non-DIY route, there are the Tech21 pedals. They do speaker simulation along with preamp.

J

[eniacmike]

you're going to want a speaker simulator on the output, for going direct.  Either a filter on the output or a standalone box, for direct into PA.

Yeah, you would want to know if he's running that as a PA into full-range PA speakers or using the Fender PA as a head going into a guitar cabinet. If it's a straight up full-range PA, you might need some kind of speaker simulation to get it more "guitar-like."

Some of the runoffgroove projects would apply here, along with the SansAmp project.

Non-DIY route, there are the Tech21 pedals. They do speaker simulation along with preamp.

J

It's a fender tube bandmaster tube pa into guitar cabs. I saw the byoc parametric project and it is cool but I HATE the layout. probably something ROG will do it. I built a flipster for bass and I love that circuit.

[madbean]

The Peppermill is worth a look. You could add a stock TMB tone control and a recovery stage after it to get something close to what you are describing, Mike.