The XS series amplifiers are RAW POWER machines capable of INSANE POWER LEVELS. Each amplifiers circuit board is based on years of high power research and development along with years of experience to make sure every XS amplifier will perform beyond expectations. Every XS amplifier was designed for competition SPL vehicles in mind, and also for the ridiculously loud daily driven GROUND POUNDERS. The XS amplifiers were designed and built without compromise to deliver the strongest amplifiers possible.

We offer 4 mono block XS Series amplifiers, the XS-6K, 8K, 8X and the 16K. The XS-6K, 8K & 16K power supples were designed for the STREET consumer or competitor when voltages are under 16 VOLTS or less. The XS-8X power supply was built for the EXTREME HIGH VOLTAGE consumer or competitor looking for maximum power at 18 VOLTS.



Product Features
· XS-6K, 8K, 8X Strapable Mono Block Amplifiers
· XS-16K Non-Strapable
· Dual MOSFET PWM Power Supply
· Stable Into 1 Ohm Mono Load
· 24 dB / Octave, Variable Low-Pass Crossover
· 24 dB / Octave, Variable Subsonic Filter
· 9 dB / Octave, Variable Bass Boost (N/A on XS-16K)
· 180 Variable Phase Shift
· 4 Way Protection Circuit
· Subwoofer Level Controller Included
· XS-6K, 8K, 16K Working Voltage From 8.5V ~16V
· XS-8X Working Voltage From 8.5V ~18V



SQ4 Amp


The XS-SQ4 amplifier features the finest in audio components such as BURR BROWN OP-AMPS, MONOLITHIC SIGNAL CAPACITORS, and SANKEN OUTPUT TRANSISTORS. This result is unparalleled sonic performance in a mobile audio amplifier. The XS-SQ4 amplifier’s dynamic range conveys a musical realism that transcends standard amplifier designs. With seemingly UNLIMITED FREQUENCY RESPONSE and smashing dynamic range, the end result is the finest sounding amplifier Crossfire has ever built, period.



Product Features
· Class A/B Topology
· Burr Brown Operational Amplifiers
· Monolithic Signal Capacitors
· Sanken Output Devices
· Overbuilt Dual Unregulated Power Supplies
· Hand Wound Power Supply Transformers
· 24 dB / Octave, Variable High / Low-Pass Crossover
· Isolated Pre-Amp Section
· Crossovers Have 41 Detents For Exact Frequency Selection
· Aluminum Shaft Potentiometers
· Panel Mounted  Tiffany RCAs
· Clip Indicators
· Proprietary Extruded Aluminum Heatsink
· Remote Level Controller Included
· Working Voltage From 10V ~ 18V

XS SQ4 Amp Spec Chart

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