Audio Control 4XS Crossover vintage,3way/2 channel, 2 way/4 channel Programmable 18 dB/octave Electronic Crossover With PFM, 4 Channel Or 2 Channel. Constant Bass Plus Independent Subwoofer Output. Optically Isolated, Transformer Balanced DC/DC Switching Power Supply. A Performance Match Component. Brand new in box, never used. Almost impossible to find one brand new The box has only been opened to take pictures and to show it's working. Made in USA Everything will come as pictured
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