Mackie Active Portable PA Speaker Ease-of-use, professional sound quality and indestructible portability have made the Mackie SRMs a live sound legendWith 1000W of peak power, 500W of pure RMS and enhanced digital processing, the SRMs deliver an unmatched balance of power and sound quality in a lightweight, portable package. The legendary SRM Portable Series features two models, each with a different LF driver and overall size. The SRM450 and SRM350 feature a powerful 1000W amp platform paired with custom high-output drivers and Mackie Smart ProtectTM DSP for intelligent system protection for a solid, reliable PA solution perfect for your high-output application. SRMs feature an integrated 2-channel mixer, so you can easily mix multiple sources. 2 Mackie Wide-ZTM inputs offer flexible connection options and ultra-wide gain range. A stereo RCA input is included for connecting a smartphone, laptops, etc. There's also an n XL thru with source options for connecting to other speakers. You