Soundstream ST4.1000D Stealth Series — 1000W Class D 4-Channel Car Amplifier

The Soundstream ST4.1000D Stealth Series is a compact, high-efficiency 4-channel Class D car amplifier built to deliver strong output with low heat. It offers up to 1000 watts peak power and 500 watts RMS total, supporting full-range operation in both 2-ohm stereo and 4-ohm bridged configurations. Channel outputs include 90 watts x 4 RMS at 4 ohms, 125 watts x 4 RMS at 2 ohms, and 250 watts x 2 RMS when bridged at 4 ohms. The design uses a MOSFET power supply with IRTM transistors and a high-efficiency Class D topology for clean, powerful output. Crossovers are adjustable (variable 12dB high pass, low pass, and subsonic) to tailor frequency response, while a hybrid aluminum alloy heatsink and military-grade SMT PCB improve thermal performance and long-term reliability. Protections for direct shorts, thermal events, and overloads are built in. Inputs accept 200mV-12V high-level or low-level RCA signals. Convenience features include quick-disconnect RCA/high-level wire harness and quick-disconnect power and speaker output harness. Specifications: RMS power at 4 ohms: 90 watts x 4; RMS power at 2 ohms: 125 watts x 2; RMS power bridged at 4 ohms: 250 watts x 2; Max power: 1000 watts; Channels: 4; Class: D; Frequency response: 20Hz 30kHz; Impedance: 4 ohms; S/N ratio: 70 dB; Color: Black; Dimensions (L x W x H): 6.5 x 3 x 1.5 inches; Weight: 1.7 pounds; Manufacturer warranty: 1-year warranty.