{"product_id":"powerbass-acs-4090-4-channel-amplifier","title":"Powerbass ACS-4090 4-Channel Amplifier","description":"\u003cdiv\u003e\n\u003cp\u003ePowerbass ACS-4090 is a compact 4-channel amplifier delivering 90W RMS per channel into 2 ohms, engineered for high-fidelity, space-limited car installs. Built for enthusiasts who demand Class A\/B full-range performance in a small chassis, it uses a 6 oz\/kg high-density heatsink for efficient cooling.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003e4-Channel, 90W RMS x4 @ 2 ohms\u003c\/b\u003e: Provides solid, per-channel power to four speakers, delivering clear, dynamic performance even when the system demands loud, clean playback at low impedances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003e2-ohm Stable (4-ohm in Bridged Mode)\u003c\/b\u003e: Supports low-impedance speaker loads for higher output per channel, and, when bridged, can yield higher mono power into a 4-ohm load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePeak Power: 720 watts\u003c\/b\u003e: Represents the amplifier’s maximum instantaneous power potential, useful for transient dynamics and bass impact during peak musical moments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003ePWM MOSFET Power Supply\u003c\/b\u003e: Uses a switching power design to supply the amplifier with consistent voltage, contributing to efficient operation and compact cooling demands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eInputs: High Level (Speaker)\/Low Level (RCA) Input\u003c\/b\u003e: Flexible integration with both factory head units and aftermarket sources, enabling easy installation paths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRemote Soft Delay Turn On\/Off Circuit\u003c\/b\u003e: Eliminates turn-on pops and creates a smoother power-up sequence, preserving speaker integrity and listening fatigue.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVariable High\/Low Pass Electronic Crossover\u003c\/b\u003e: Lets you tailor the frequency range for each channel, optimizing voice and instrument clarity and matching speaker characteristics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSelectable 12dB Bass Boost EQ\u003c\/b\u003e: Adds targeted bass energy without overwhelming the rest of the spectrum, usable to align bass response with speaker\/system goals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVariable Gain Control\u003c\/b\u003e: Allows precise input level matching to prevent distortion and maximize dynamic range across all channels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eProtection Circuit\u003c\/b\u003e: Guards against impedance overload, speaker short, thermal overheating, and DC output conditions, helping maintain reliability in recoverable fault scenarios.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eOutput Power (14.4V)\u003c\/b\u003e: @ 4 ohm: 45 watts x 4; @ 2 ohm: 90 watts x 4; @ 1 ohm: N\/A — defines real-world operating power under typical automotive electrical conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFrequency Response\u003c\/b\u003e: 10 Hz – 50 kHz — covers the full audible spectrum with headroom for musical transients and high-frequency detail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSignal-to-Noise Ratio\u003c\/b\u003e: \u0026gt;100 dB — indicates very low intrinsic noise for clean, quiet backgrounds at generous listening levels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTotal Harmonic Distortion\u003c\/b\u003e: 0.3% @ Rated Power — low distortion contributes to accurate, musical playback across the amp’s output range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDimensions\u003c\/b\u003e: Dimensions (in Inches): 12.8\" x 7.1\" x 2.0\"; Depth: 12.8\" — a compact footprint suitable for tight installations while preserving mounting versatility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHigh-Density Heatsink\u003c\/b\u003e: 6 oz\/kg design provides efficient cooling in a small chassis, helping maintain performance during longer listening sessions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn a real-world build, the ACS-4090 shines as a four-channel power base for component systems or a compact multi-amp setup in vehicles with limited space. Its adjustable crossovers, bass boost, and broad frequency response let you sculpt a balanced, high-fidelity signal to each speaker while protective features and solid thermal management help keep the system stable under demanding listening sessions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Powerbass","offers":[{"title":"Default Title","offer_id":49850257768676,"sku":null,"price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0842\/2522\/9028\/files\/a592860dda956f2.98102618.png?v=1789262065","url":"https:\/\/www.12voltoutlet.com\/products\/powerbass-acs-4090-4-channel-amplifier","provider":"12 Volt Outlet","version":"1.0","type":"link"}