QS Series amplifiers are all about efficient design capable of full-range frequency response at a great price! The QS800.4 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 QS400.4 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 a high air flow cooling fans controls its temperature to run cool on the most demanding playlists.

Features: 

• 4 x 220 watts TRUE RMS certified at full range output Digital Class D Brazilian Technology
• 4 Channel car audio amplifier stable at 2 Ohm gives you the benefit of wiring multiple speakers and dividing the power per channel.
• Engineered to be the most efficient full range amplifier so that you can get the most out of your vehicle’s electrical system!
• A small footprint and compact chassis make this amplifier easy to install anywhere in the vehicle: 8″ Wide x 7.90″ Length x 2.65″ Height
• 2 Channel Bridged – double the power output to your speakers by bridging two channels. Minimum impedance of 4 Ohms per bridged channel at output power of 2 x 450 Watts RMS.

Specifications: 

• Impedance: 2 Ohm
• Channels: 4 Channel
• Rated RMS Power at 14.0 V at 2 Ohm: 4 x 220 Watts RMS
• Rated RMS Power at 14.0 V at 4 Ohm: 4 x 140 Watts RMS
• Bridged Rated RMS Power at 14.0 V at 4 Ohm: 2 x 450 Watts RMS
• Average Efficiency: 82%
• Operating Voltage: 9 to 15 Volts
• Musical Current Draw: 45 A
• Minimal Power Wire Input(OFC): 4 Gauge wires
• Built-in Crossover: Fixed HPF & LPF at 90 Hz
• Minimal Speaker Wire Output: 14 Gauge
• Frequency Response(-3dB): 20 – 25,000 Hz
• Min. Input Sensitivity for Max. Output: 200 mV
• Signal Input: 2 Pair RCA
• Signal to Noise: >90 dB
• Protection System: High Temperature / Short circuit on Output
• Heat Sink Type: Heavy Duty Cast Aluminum
• Dimensions (W x D x H): 7.98″ x 8.00″ x 2.65″
• Weight: 4.25 Lbs

Before Installing:

You must follow the instructions for the product’s installation to guarantee optimal performance. If you have any questions, get in touch with us. Before using the amplifier, always follow these guidelines:

• Make sure the amplifier is switched off before adding or removing any connections. This prevents possible damage to equipment.
• Keep all cables as far away as possible from the ignition cables, electronic injection modules and starter switch since they may cause noise interference;
• Always use 100% Copper wire and good quality connectors. This guarantees reliability and performance.
• To avoid damaging the cables, make sure that they do not touch sharp metal edges. Important: For this amp use a 60A fuse 12 inches away from the battery as a safety precaution