The BLADE X "BPX SEIRES" Series Amplifiers are designed with our “Live, Loud, and Play Hard” motto. All amplifiers have built-in OEM line converters with RCA inputs that can take a high-level speaker signal at up to 9 Volts directly in. By sensing the DC offset of a factory radio the amplifier can activate the ATO (Auto Turn On) feature and convert the 12V turn-on into a 12V switched-out. All Blade X amps use Mil Spec PCBs, SMD parts, 5-way protection, full MOSFET high-grade switching devices and all comply with the “World Wide Standards”, “ROHS”, “E-Mark” and are CTA2006 Compliant. This ensures that no competition can stand up to the BLADE BP when it comes to features, performance, and value.