The AMPED AMERICA AAP-1 is an ultra-high-grade analog and digital preamp that forms the heart of a modern music system. The chassis design harkens back to the glory days of analog audio, but don't be fooled, this technologically advanced unit is built for today's audio world and includes multiple analog and digital source inputs. Extreme care was taken in the design to isolate the pre-amplifier's critical sound reproducing components providing you with the clearest sound possible. Mates beautifully with AMP 2400.