The third tier in Lexicon’s award-winning MPX Series, the MPX550 offers high-end professional features and “Lexicon Sound” at an affordable price. Like its predecessors, the MPX 550 is a true stereo processor that includes 24-bit analog-to-digital and digital-to-analog conversion. It relies on the proprietary LexiChip engine to perform 24-bit internal processing. Its 255 carefully-crafted presets feature legendary Lexicon reverb, as well as dual programs that combine two independent effects in four routing configurations. Tempo can be set using audio input, a dual footswitch, the front panel Tap button, or an external MIDI device. A powerful editing tool called Learn Mode allows patching of up to five front panel controls. To this, the MPX 550 adds impressive features such as balanced analog inputs and outputs, a large front panel display, four Edit knobs for simple parameter adjustment, and an internal power supply

 Legendary Lexicon reverb from proprietary Lexichip™
 24-bit internal processing and A/D/A conversion
 Selectable 44.1 or 48kHz sampling rate
 255 presets and 64 User programs, including a Compressor Bank
 Dynamics algorithm with enhanced metering
 S/PDIF I/O (may be set to wet or dry)
 Balanced analog I/O (XLR and 1/4 inch TRS)
 Simultaneous analog and digital outputs
 Independent processing of each input
 Dual programs that combine two independent effects in four routing configurations
 Multiple delay, modulation, and pitch effects
 Built-in digital compressor with four adjustable parameters
 Tap Tempo
 Full MIDI control with software-selectable MIDI Out/Thru connector
 Large, graphic front panel display
 Four Edit knobs for quick parameter adjustment
 Cue Program Mode
 Global Mix, Tempo, and Compressor Modes
 Internal power supply