Preamp for 147-type Leslie?

[Tom Strano <8STRANO_T@spcvxa.spc.edu>]

I just got my first piece of classic equpiment this weekend - a Leslie 125.

I'm currently modifying it so I can easily use it with any signal source,
but I'm not sure what kind of preamp I should use to drive the 125's
amplifier.  (It's similar to the 147's, though only 20 watts, I think.)

Buying a Trek preamp pedal is overkill and too expensive - I tested it
by using a $10 test amplifier, and had it not been for the test amp's 
terrible S/N ratio, it would have been fine.

Any suggestions?  Guitar pedal?  Rip apart a cheap guitar practice
amp?  Build something (where can I get the schematic)?

Thanks!

- Tom

Hey, I can actually put an equipment tagline on my message now!
Voce DMI-64 MkII, Leslie 125, not working too well together yet.