Sundown Audio SFB 4/5-Channel Class D Full Range Car Amplifier 1 Ohm, Brazilian Style Amp with Variable HPF/LPF, Bass Boost, Clipping Remote for Car & Marine Audio (SFB-200.4-4-Channel)

Unleash serious power with the Sundown Audio SFB200.4D, a high-performance full-bridge Class D 4-channel amplifier engineered for versatility and reliability. Compact yet powerful, this amp delivers 75 watts x 4 at 4 ohms and 125 watts x 4 at 2 ohms, making it ideal for car, marine, or PA mid/high systems. The SFB200.4D is 1-ohm stable and allows you to connect multiple speakers per channel—an excellent option for budget-friendly builds that demand serious volume. It features variable high-pass and low-pass filters (15–6000 Hz), 0–12 dB bass boost, and input sensitivity adjustment for both low and high-level signals. Advanced safety circuits protect against thermal overload, voltage spikes, speaker shorts, and DC offset issues. With a sleek, compact design and an impressive 100 dB signal-to-noise ratio, the SFB200.4D guarantees clean, distortion-free audio even at high power. Backed by a 1-year manufacturer’s warranty and engineered with durability in mind, this amp brings professional-grade performance within reach. Whether you're building a marine setup or a competition-level car audio system, Sundown’s SFB series is built to impress.Product Features:Class D 4-channel full bridge designClass D 4-channel full bridge design1-ohm stable per channel1-ohm stable per channel75W x 4 @ 4Ω and 125W x 4 @ 2Ω75W x 4 @ 4Ω and 125W x 4 @ 2ΩVariable high/low-pass filtersVariable high/low-pass filtersAdjustable bass boost (0–12 dB)Adjustable bass boost (0–12 dB)100 dB signal-to-noise ratio100 dB signal-to-noise ratioThermal and short circuit protectionThermal and short circuit protectionCompact and efficient designCompact and efficient designHigh/low-level input optionsHigh/low-level input options1-year manufacturer's warranty1-year manufacturer's warranty