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QS Series amplifiers are all about efficient design capable of full-range frequency response at a great price!
The QS400.4 features a regulated power supply that is able to constantly deliver power and provides an unsurpassed efficiency rate of 80–90% in a small aluminum heatsink.
The QS series is our most recent line of full bridge high wattage amplifiers. You can count on these amplifiers to deliver incredible value for your money. QS Series 4 Channel amplifiers, also are available on QS800.4 and QS1200.4
Its wide frequency response allows you to use it in many different applications, such as subwoofers, midbass, midrange, full range speakers, phenolic drivers, titanium drivers, and super tweeters, among others. This versatile amplifier is the perfect solution for daily car audio systems.
Its small heatsink offers high fidelity sound, with precise midbass punch and crystal clear highs. This amplifier is perfect for anyone who wants to experience maximum sound quality and power at an affordable price.
This proprietary heat dissipation design will ensure its temperature to run cool on the most demanding playlists.
GENERAL SPECIFICATIONSImpedance2 OhmChannels4 ChannelRated RMS Power at 14.0 V at 2 Ohm4x 100 Watts RMSRated RMS Power at 14.0 V at 4 Ohm4x 70 Watts RMSBridged Rated RMS Power at 14.0 V at 4 Ohm2x 200 Watts RMSAverage Efficiency80%Operating Voltage9 to 15 VoltsMusical Current Draw45 AMinimal Power Wire Input(OFC) 8 Gauge wiresBuilt-in CrossoverFixed HPF & LPF at 90 HzMinimal Speaker Wire Output14 GaugeFrequency Response(-3dB)20 – 25,000 HzMin. Input Sensitivity for Max. Output200 mVSignal Input2 Pair RCASignal to Noise>90 dBProtection SystemHigh Temperature / Short circuit on OutputHeat Sink TypeHeavy Duty Cast AluminumDimensions ( Width x Depth x Height )4.00″ x 5.40″ x 2.00″Weight1.18 Lbs