< p> DD AUDIO continues to redefine the venerable M Series with revisions that greatly improve power and efficiency without increasing unit size. The M2500 incorporates the finest in ultra-high current devices and optimizes their usage with intelligent configuration to successfully maintain the modest footprint of its predecessor.< br> < br> Using design features borrowed from the award winning Z12000, the new M Series expands its operating voltage with improvements to the power supply, output section, and high efficiency heat sink, giving it a 16v max operation that takes full advantage of today’s lithium batteries. These enhancements allow the best power to footprint ratio to date!< br> < br> To further enhance performance, the M Series features new end panels, raising the amps off the mounting surface, allowing the internal fan to pull more air through the PCB even on carpeted or padded surfaces.< br> < br> These high current half bridge amps are more compact, lighter and pack more punch than any previous M Series.< br> < br> Be sure to check out the app controlled LED Vanity Plates available for the M2500, M5000, and M8000!< /p>