Used Marshall MGP 9004 Guitar Preamp Microphone Preamp

The Marshall MGP 9004 is a classic rackmount guitar preamp delivering the iconic Marshall tone with solid-state reliability. Featuring dual channels—clean and overdrive—it offers flexible tonal shaping through a 3-band EQ, gain, and volume controls. Operating at 18V, it outputs line-level signals suitable for both live and studio use. This used unit is in good condition, showing normal cosmetic wear and fully functional, perfect for players seeking vintage character and straightforward performance.