XTi 2 series amplifiers features Peakx Plus™ limiters provide ultimate in system performance and protection by allowing full control over threshold, attack, and release. Enhanced Subharmonic Synth section provides user control over frequency, gain and filter type for system specific tuning. 3 user-defined fan mode controls, normal, early and full speed for matching fan performance to specific application. New system monitoring provides software visibility of AC line voltage and power supply temperature. Increased number of presets to total of 50 presets, 49 of which are user definable. Integrated cast-aluminum handles for easy handling and enhanced durability. Locking power cord clip provides a secure connection between amplifier and power cord. Updated HiQnet system architect control software. XTi 2 series amplifiers set the standard for unmatched performance and value, with universal tracking switch-mode power supply and a fully integrated suite of speaker processing tools, these amps are at the top of their class.