See if this one will work for you.It's really small.
http://www.needledoctor.com/Clearaudio-Nano-Phono-Preamp?sc=2&category=401
http://www.needledoctor.com/Clearaudio-Nano-Phono-Preamp?sc=2&category=401
COMPACT PHONO PREAMP?
I need a phono preamp (for a high output moving coil cartridge) that will fit in the back of a cabinet and be inacessible once installed behind a MacIntosh preamp. It cannot be more than 12 inches wide, 10 inches deep and 6 inches high. The smaller the better. It goes with an SME 10, JBL Paragon and MacIntosh Amps and Preamp. Any suggestions?