Stinger SPX350X2 2-Channel 350W Class D Powersports Amplifier with IPX-4/5 Weather Resistance Built for the elements a compact, weather-resistant Class D powersports amplifier delivering 350W bridged into boats, ATVs, UTVs, motorcycles, and 4x4s where standard car amplifiers won't survive. Product Overview The Stinger SPX350X2 is a 2-channel Class D powersports amplifier engineered for use in harsh environments where conventional car amplifiers fall short. With an IPX-4/5 weather-resistant design, weather-resistant PCB, and D-Class MOSFETs, it is built to handle the moisture, dust, vibration, and wide voltage swings encountered in marine, off-road, ATV, UTV, motorcycle, and 4x4 applications. The unregulated power supply design operates across a wide voltage range (8–16V), making it suitable for applications with non-standard battery systems. An AUX RCA pass-through output allows multiple SPX350X2 units to be daisy-chained from a single audio source, and an included remote volume control knob with mute function provides easy level adjustment. Features & Benefits IPX-4/5 weather-resistant design — moisture, splash, and dust resistant Weather-resistant PCB for long-term durability in harsh environments Full range Class D amplifier with D-Class MOSFETs Unregulated power supply — operates across 8V to 16V AUX RCA pass-through output for linking multiple amplifiers from one source Included remote volume control knob with mute function 12dB/octave Linkwitz-Riley crossover, adjustable 40Hz–400Hz Balanced 2-channel RCA input (200mV–12Vrms) Diecast endcaps with removable mounting feet Compact, low-profile footprint Suitable for motorcycles, ATVs, UTVs, boats, marine, and mobile applications Technical Specs Specification Detail SKU / Part Number SPX350X2 Brand Stinger Channels 2-Channel Class Class D (Full Range) RMS Power @ 4Ω (Stereo) 125W RMS x 2 RMS Power @ 2Ω (Stereo) 175W RMS x 2 RMS Power @ 4Ω (Bridged) 350W RMS Rated Voltage 14.4V Operating Voltage Range 8V – 16V (Unregulated) Preamp Input 2-Channel Balanced RCA Input Voltage Range 200mV – 12Vrms (Balanced) Preamp Output 2-Channel AUX RCA Pass-Through Frequency Response 20Hz – 20kHz Signal to Noise Ratio >110dB (CEA Standard) THD+N
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