Used ADA Signal Processors MB1 Effect Processor

Used and in good condition, the ADA Signal Processors MB1 is a legendary bass preamp celebrated for its rich tonal versatility and studio-quality performance. This compact rackmount unit features a tube/solid-state hybrid design, offering a wide dynamic range and seamless transitions between clean and overdriven tones. It includes a 4-band semi-parametric EQ, dual outputs (XLR and 1/4"), and a bi-amp capability for ultimate tone shaping and signal routing flexibility. Ideal for both live and studio use, the MB1 delivers warm tube saturation and punchy low-end clarity that has made it a favorite among bass players. This unit shows minor signs of cosmetic wear consistent with age, but is fully functional and ready to elevate your bass rig. Whether you're seeking vintage tube character or modern clarity, the MB1 stands as a powerful tool for crafting your signature sound.