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Audio Express

Quality Auto Sound

 | Quality Auto Sound | Western United States

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S-Series amplifiers are your sound system’s workhorse. With unmatched reliability and budget-friendly prices, these amplifiers are the better choice in performance value.

Alpine® S-Series 4/3/2 Channel Power Amplifier

CTA-2006-B Power Rating: 55W RMS x 4 (4ohm, 14.4V = 1% THD+N); 80W RMS x 4 (2ohm, 14.4V= 1% THD+N)

Bridged: 160W RMS x 2 (4ohm, 14.4V = 1% THD+N)

S/N ratio: >83dB (ref: 1W into 4 ohm), >98dB (ref: rated power into 4 ohm)

Perfect for beginners and enthusiasts alike, the S-Series amplifiers have the technology to improve your music experience yet are still friendly on your wallet. Used in conjunction with our advanced S-Series speakers and subwoofers, they create a complete sound system that takes your in-vehicle music experience to the next level.

The S-Series amplifiers are designed to fit anywhere.  Measuring at 8”, these amplifiers can be mounted under seats or behind panels.  Though they sport a compact footprint on the outside, they produce impressive power on the inside The S-A32F 4-Channel Amplifier boasts the perfect amount of power to drive the newly redesigned S-Series speakers to their optimal performance for clean and accurate sound.

The S-Series amplifiers contain technology that was previously only available in our premium line up of amplifiers, the R- and X-Series models. The S-Series models are based on Alpine’s intelligent amplifier platform that ensures superior sound reproduction and precision imaging. With an improved heat sink, and protection circuit design that eliminates thermal shut-down, your music will keep playing no matter where your drive takes you.

The Club A754 4-channel amplifier delivers a powerful 75-Watts RMS to each of the front and rear speakers in your car. You can also bridge the amp to 2-channel mode to drive a couple subs with 200 watts RMS or 3-channel mode to drive both a pair of full r

JBL® Black 4 Channel Car Amplifier

The JBL Club A754 amplifier features a low-profile chassis and a small overall footprint to fit in more vehicles where available space is limited.

Speaker-level and low-level inputs allow the Club A754 to integrate with both aftermarket and factory car stereo systems.

Unlike many amplifiers available at similar prices, the JBL Club A754 features variable electronic crossovers for precise system tuning and performance.

The Club A754 has been engineered using Balanced Differential Inputs to ensure low noise and distortion even at high output levels. This also makes it far less susceptible to line induced engine noise.

When low-level inputs are used, this control adjusts the input sensitivity between 200mVrms and 2.0 Vrms. When high-level inputs are used, this control adjusts the input sensitivity between 2Vrms and 20Vrms.

On-board circuitry protects the Club A754 from shorts, high-temperature, overvoltage and undervoltage. An LED indicator is provided to let you know when one of these conditions exists.

Using multiple amplifiers, the Club A754 has full range preamp outputs allowing you to feed an additional amplifier without using splitters.

The JBL Club A754 4 channels subwoofer amplifier delivers 400-Watts RMS using a Class H amplifier design to ensure high output and minimum current draw.

This switch changes DC to REM to adapt with low-level signals or high-level signals, this is especially helpful as part of remote turn-on lead of your installation more choice. A selectable “Turn-on mode” can protect battery to avoid current drain, when you don’t expect to turn on your amplifier.

The Club A754 4-channel amplifier delivers a powerful 75-Watts RMS to each of the front and rear speakers in your car. You can also bridge the amp to 2-channel mode to drive a couple subs with 200 watts RMS or 3-channel mode to drive both a pair of full range speakers and a subwoofer. Speaker-level inputs allow this amplifier to integrate into almost any system, even one using your car's factory radio. Separate high-pass and low-pass crossovers on the front and rear channels allow you dial in the perfect roll off to best suit speaker placement and cabin acoustics. 

Designed to simplify great audio, every VXi amplifier combines our advanced NexD2™ switching amplifier technology with an integrated, full-featured digital signal processor.

JL Audio® 4 Channel 400 W Class D Full-Range Amplifier with Integrated DSP

4-Channel Class D Full-Range Amplifier with Integrated DSP, 100 W x 4 @ 2 O / 75 W x 4 @ 4 O - 14.4V

With our second-generation NexD2™ technology, the VX400/4i full-range amplifier outputs up to 75 watts per channel into 4 ohms, or 100 watts into 2 ohms. It can also be bridged into 4 ohms, producing up to 200 W x 2.

The NexD2™ full-range technology in this amplifier is DSP-controlled and features a reduced loop area design utilizing DirectFET™ outputs for outstanding fidelity, very low noise and exceptional efficiency. The amplifier chassis is ultra-compact, with all connections on one side, to greatly simplify installation into tight spaces.

Instead of traditional control knobs and switches, all amplifier adjustments and DSP functionality are configured via a compatible external device (PC, Tablet or Smartphone), with the appropriate JL Audio TüN™ Software application installed.

Amplifier includes: Power Connector (for 4 AWG wire), Analog Input/Pre-Out Harness, Speaker Output Harness, 6 ft A/B USB Cable

Frequency Response: 12 Hz - 24 kHz (+0, -1dB)

Min.Copper Power / Ground Wire Gauge: 4 AWG wire

This tiny amplifier packs a serious full-range punch, delivering a staggering 100 watts to each of its four channels into 2 ohms (14.4V, 1% THD). The breakthrough that makes this much power possible in such a small chassis is our NexD™ ultra-high-speed sw

JL Audio® 4 Channel Class D Full-Range Amplifier

4-Channel Class D Full-Range Amplifier, 100 W x 4 @ 2 O / 75 W x 4 @ 4 O - 14.4V

This tiny amplifier packs a serious full-range punch, delivering a staggering 100 watts to each of its four channels into 2 ohms (14.4V, 1% THD). The breakthrough that makes this much power possible in such a small chassis is our NexD™ ultra-high-speed switching design, which allows for full bandwidth Class D operation with extremely low distortion and outstanding efficiency.

Use the XD400/4v2 in combination with our XD600/1 monoblock to build a 1000 W amplification system to power four satellites and a subwoofer... and fit the whole thing under a seat. Or, use the XD400/4v2 by itself to power two satellites, plus a subwoofer. With XD's, the possibilities are endless.

The XD400/4v2 also features the v2 Spec feature set, which consists of automatic turn-on capability (via signal sensing or DC-offset sensing), and a dual-range differential-balanced input section able to handle a wide range of input voltage levels. With the addition of an HD-RLC remote level control (sold separately), the amplifier's level can be directly controlled from the driver's seat.

This amplifier features a black powder-coat finish and a gasketed, brushed aluminum cover for the controls.

Utilizing our exclusive NexD™ high-speed switching technologies, the ultra-compact RD400/4 amplifier is engineered to deliver loads of audio output power, with incredible efficiency and low distortion. Don’t let its modern styling and small size fool you 

Utilizing our exclusive NexD™ high-speed switching technologies, the ultra-compact RD400/4 amplifier is engineered to deliver loads of audio output power, with incredible efficiency and low distortion. Don’t let its modern styling and small size fool you though, this little powerhouse churns out 100 watts of crystal-clear audio from each of its four channels into 2 ohms (14.4V, 1% THD) and is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a whopping 200W x 2 into 4 ohms.

For your convenience, the RD400/4’s controls can be found on top of the amplifier, beneath a protective cover, with all connections located along one side of its chassis. Studio-grade signal processing features include high or low-pass 12 dB / octave filters (defeatable) for each channel pair, with continuously variable frequency selection from 50-500 Hz, and dual-range, differential-balanced inputs capable of accepting most input voltage levels. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard equipment, along with all-new input type switches for bridging of stereo output channels without needing to use Y-adaptors.

Onboard LED-clipping indicators are also included with your RD400/4. This all-new, innovative feature lets you easily set your amplifier’s input sensitivity settings, quickly and accurately, with no special equipment needed. You’ll also find a set of preamp outputs on-hand, so you can pass signals to another amplifier, almost effortlessly. The RD400/4 features a durable, black powder-coated finish and a top-mounted, dual-color LED light strip that reports the overall status and condition.

JL Audio® 4 Channel Class D Full-Range Amplifier with Single-Cycle Control switching and R.I.P.S. technology

JL Audio® 600 W 4 Channel Class D Full-Range Amplifier

4-Channel Class D Full-Range Amplifier, 150 W x 4 @ 1.5-4 O

This compact multi-channel powerhouse employs our Single-Cycle Control switching design and R.I.P.S. technology to deliver 150 W x 4 or 300 W x 2. Tight power supply regulation keeps distortion down and maximizes sound quality.

When using the HD750/1 or HD1200/1 to drive a subwoofer system, the HD600/4 is the ideal satellite amplifier, delivering huge dynamics with pristine resolution. From a pure sound quality perspective, we invite you to compare the real-world, in-car performance of this amplifier to any other amplifier on the market, of any type, at any price.

It can also be deployed on its own as a very capable 3-channel system amplifier with 150 W x 2 to the satellites and 300 W x 1 to a subwoofer system.

This amplifier features a brushed aluminum finish with black powder-coated cast alloy heat sinks and bottom panel. A black powder-coated, gasketed cover is also provided to protect the controls.

Frequency Response: 6 Hz - 30 kHz (+0, -1dB)

THD+N @ Rated Power: <0.03% @ 4 O per Ch.

High-Resolution Audio is high-quality sound that exceeds CD standard. High-resolution audio captures and beautifully expresses all the details of your favorite music. Through ultra-high and low frequencies, immerse yourself in a rich and high-quality soni

Kenwood Class D 4 Channel Power Amplifier

Rich and Immersive  High-Resolution Audio

High-Resolution Audio is high-quality sound that exceeds CD standard. High-resolution audio captures and beautifully expresses all the details of your favorite music. Through ultra-high and low frequencies, immerse yourself in a rich and high-quality sonic experience.

Special capacitors and inductors have been carefully selected for the digital amplifier’s LC filter, which is essential for achieving highresolution audio. These high-performance parts reduce noise and distortion and ensure excellent sound quality.

By using a down-firing subwoofer and superior technologies, the audio system generates high-quality sound and powerful bass, while still being compact.

The feedback value of the current XR Amplifier has been optimized to improve the S/N ratio. As a result, the noise level has been reduced by up to 40%.

The noise reduction system employs a special layout that separates the analog circuit, digital amplifier circuit and power supply circuit. This keeps interference between the circuits to a minimum, decreasing noise and thereby achieving high performance and sound quality.

The wired remote control allows you to adjust the volume of a subwoofer when connected to the head unit.

Operating Voltage: 14.4V (11 - 16 V allowable)

Dimensions (W x H x D): 220 x 35 x 169 mm (8-11/16 x 1-3/8 x 6-5/8)

The CXA360.4 Four-Channel Amplifier is built to power all your door speakers in a single, powerful package.

Kicker® CXA360.4 4 Channel Amplifier

This CX-Series Amplifier delivers as much as 90 watts into four full-range channels, or 180 watts into two bridged channels. See below for more details.

Using Class A/B power, this amp features a variable bass boost with KickEQ™, giving you as much as a 6dB of extra bump. A powerful 12dB crossover is also included, letting you quickly tune your system to perfection.

CX-Series Amplifiers accept up to 40 volts (400 watts) of speaker-level input signal. This kind of flexibility both makes line-out converters unnecessary and optimizes your sound quality at the same time!

Highly efficient heat sinks keep the amp cool with a sophisticated new look, while KICKER’s FIT+™ (Fail-safe Integration Technology-PLUS), gives you outstanding noise rejection - even with premium factory audio systems.

The biggest advance - in the smallest package. Introducing the KEY smart amplifier and audio processor in one, featuring AI-driven DSP.

Kicker® KEY200.4 Smart 4-Channel Amplifier

Don't just make your system louder - make it clearer. Make it better…

Press the selector, and the microphone goes to work. The KEY uses a powerful internal computer to deliver dramatic improvements in realism and soundstage. A massive 40-band equalizer improves tonality, and a 24dB crossover re-defines the capabilities of each speaker.

The concert quality of your factory stereo is revealed! What would take hours for a professional to achieve happens in a matter of minutes. All automatically. All with the press of a single button.

In addition to an unbelievable sound quality, the KEY200.4 delivers 200 watts of pumpin' power to your factory speakers. At KICKER, we know power and clarity always go hand-in-hand.

Measuring less than eight inches long and only two inches high, the KEY200.4 fits nearly anywhere. Mount it behind your radio, under the seat, or in your trunk with ease.

The KEY200.4 is one of the first amps fully compatible with newer vehicles using start-stop systems. The amplifier also features FIT2™ (Fail-Safe Integration Technology), providing compatibility with nearly every stock and aftermarket radio on the road today.

If the temperature reaches the threshold, the KEY200.4's dynamic power-management algorithms kick into gear! Instead of hearing the amplifier's volume “pumping” or blowing a fuse – KEY technology engages a nearly inaudible limiter/compressor, applied only to the peaks of the music for as little as milliseconds at a time. The amplifier quickly cools, which deactivates the compressor. Music returns to its full dynamic range without a moment’s interruption!

Auto EQ Microphone With Selector Switch Included

Compatible with Start/Stop Vehicle Technology

Turn On Via Remote 12v Signal Or DC Offset

60/80/120hz High Pass Filter (Defeatable)

Infinity's Reference 3004A amplifier will add plenty of muscle to your music without breaking a sweat, and it'll look good doing it. This 4-channel powerhouse delivers 75 watts RMS to each of the front and rear speakers in your car. Into planning ahead? Y

Infinity® High Performance 4 Channel Car Amplifier

Infinity's Reference 3004A amplifier will add plenty of muscle to your music without breaking a sweat, and it'll look good doing it. This 4-channel powerhouse delivers 75 watts RMS to each of the front and rear speakers in your car. Into planning ahead? You could use this amp in 2-channel mode now to drive a couple subwoofers with 200 watts RMS each, then reassign it to your front and rear speakers when you get a bigger sub amp. Speaker-level inputs allow this amplifier to work in almost any system, even if you're keeping your car's factory radio. You can use the separate high- and low-pass filters on the front and rear channels to maximize the performance of your speakers or subs.

Infinity Reference amplifiers have been engineered with a compact footprint to fit in more vehicles even if available space is limited.

Speaker-level and low-level inputs allow the Reference 3004A to integrate with both aftermarket and factory car stereo systems.

Unlike many amplifiers available at similar prices, the Infinity Reference 3004A features variable electronic crossovers circuits allowing for precise system tuning and performance.

The Reference 3004A has been engineered using Balanced Differential Inputs to ensure low noise and distortion even at high output levels. This also makes it far less susceptible to line induced radiated engine noise.

On-board circuitry protects the Reference 3004A from shorts, high-temperature, overvoltage and undervoltage. An LED indicator is provided to let you know when one of these conditions exists.

Using multiple amplifiers, the Reference 3004A has full range preamp outputs allowing you to feed an additional amplifier without using splitters.

Infinity's Reference 3004A amplifier will add plenty of muscle to your music without breaking a sweat, and it'll look good doing it. This 4-channel powerhouse delivers 75 watts RMS to each of the front and rear speakers in your car. Into planning ahead? You could use this amp in 2-channel mode now to drive a couple subwoofers with 200 watts RMS each, then reassign it to your front and rear speakers when you get a bigger sub amp.

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4-Channel Amps

Alpine® S-Series 4/3/2 Channel Power Amplifier

JBL® Black 4 Channel Car Amplifier

JL Audio® 4 Channel 400 W Class D Full-Range Amplifier with Integrated DSP

JL Audio® 4 Channel Class D Full-Range Amplifier

JL Audio® 4 Channel Class D Full-Range Amplifier

JL Audio® 600 W 4 Channel Class D Full-Range Amplifier

Kenwood Class D 4 Channel Power Amplifier

Kicker® CXA360.4 4 Channel Amplifier

Kicker® KEY200.4 Smart 4-Channel Amplifier

Infinity® High Performance 4 Channel Car Amplifier

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