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X-Series amplifiers are built on a new Alpine-proprietary circuit design that achieves class-leading power density and reliability while performing at the top of its class. By simplifying the circuit topology, Alpine is able to ensure the cleanest possibl

Alpine® 4 Channel Power Amplifier

Alpine’s top engineers from all over the world gathered in Alpine headquarters to deeply research and evaluate sound systems from both the aftermarket and high-end OE manufacturers. Many systems today have incredible dynamic range and reach sufficient volume levels, but lacked the reality of instruments and spatial imaging. As a result, Alpine ID was born, a sound philosophy that continues to inspire us to create a new level of sonic performance.

Or Alpine ID for short, is the new Alpine global sound culture with an evolutionary approach for solving what’s missing in most car audio systems these days: great spatial imaging and depth of sound stage. It centers on developing matched sound systems with core components that work together to achieve greater realism in the sound stage while maintaining great dynamic range and accuracy.

Keeping The Heat Down While Faithfully Reproducing Music

At the core of the X-Series Amplifier’s chassis is a solid cast aluminum heat sink which keeps the amplifier cool when performing at its peak power levels. Excess heat is removed from the amplifier through the newly designed heat sink profile which both improves airflow and increases surface cooling area. The fan-less channels located on both sides of the amp allow for convection flow of air; hot air naturally rises out from the top of the amplifier, which causes a vacuum that sucks in cool air from below. This smart design allows for continuous thermal control for an uninterrupted listening experience.

X-Series Amplifiers come with their very own birth sheet which reveals each amplifier’s true power rating.

High Performance While Retaining Class-Leading Power Density

X-Series amplifiers are built on a new Alpine-proprietary circuit design that achieves class-leading power density and reliability while performing at the top of its class. By simplifying the circuit topology, Alpine is able to ensure the cleanest possible signal path. While the simplicity of the circuit contributes to a great sounding signal, we added an exclusive dual feedback loop that corrects signal distortion. This clever design results in a frequency response that not only meets the Hi-Rez audio standard of 40kHz but even extends up to 60kHz. The amp maintains a very low phase shift throughout the music spectrum which allows your music stay faithful to the original recording with realism that puts you in the center of the performance.

X-Series amplifiers are built on a new Alpine-proprietary circuit design that achieves class-leading power density and reliability while performing at the top of its class. By simplifying the circuit topology, Alpine is able to ensure the cleanest possible signal path. While the simplicity of the circuit contributes to a great sounding signal, we added an exclusive dual feedback loop that corrects signal distortion.

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)

JVCKENWOOD Corporation is a leading developer and manufacturer of consumer electronics and communications equipment. Founded in the United States in 1961, JVCKENWOOD USA is the largest sales subsidiary of JVCKENWOOD Corporation of Japan and is recognized 

Kenwood Class D Mono 4-Channel Power Amplifier

Size (inch) (W) 8-3/8" x (H) 2-1/16" x (D) 5-7/8"

Detachable sliding terminal cover offers a sleek design and easier installation.

All terminals and connections are on one side for easier installation and a cleaner look.

Speaker Level Input Harness is included to connect to speaker wires from factory installed receivers.

JVCKENWOOD Corporation is a leading developer and manufacturer of consumer electronics and communications equipment. Founded in the United States in 1961, JVCKENWOOD USA is the largest sales subsidiary of JVCKENWOOD Corporation of Japan and is recognized by consumers and industry professionals for providing products known for quality, performance, and value.

The new R-Series amplifiers produce accurate imaging and dependable power. Use them with the R-Series speakers and amplifiers for a loud and fun experience.

Alpine® R-Series 4/3/2 Channel Power Density Amplifier

Alpine’s Class D Amplifier Circuit with Dual Post-Filter Feedback Loops

CTA-2006-B Power Rating: 100W RMS x 4 (4ohm, 14.4V = 1% THD+N); 150W RMS x 4 (2ohm, 14.4V= 1% THD+N)

Bridged: 300W x 2 (4ohm, 14.4V, =1% THD+N)

S/N ratio: >85dB (ref: 1W into 4 ohm), 106dB (at rated power)

The R-Series amplifiers utilize Alpine’s advanced amplifier platform that takes the classic Class-D amplifier circuit and adds dual post-filter feedback loops for unmatched accuracy and control. This technology., originally launched in the premium X-Series amplifiers,, produces efficient power with enhanced dynamic range, qualifying the R-Series amplifiers to be Hi-Resolution Audio compliant.

This new technology minimizes audible imperfections like excessive phase shift and internal noise which can deteriorate sound quality. With an incredibly low phase shift of 46°, the R-A60F 4-channel amplifier delivers accurate imaging compared to well over 100° of phase shift by a competitive amplifier model. This superior phase curve ensures a proper sound stage among the singers and instruments.

The R-Series amplifiers are tuned for a proper sound stage to make your music sound even better, no matter the genre you prefer. Like hip hop? These amplifiers deliver punchy notes with low extension. Prefer rock? The R-Series amplifiers will make you feel the power and energy of percussion, highs, and lows.

R-Series amplifiers have a built-in bandpass filter which lets you design an active speaker set-up without a separate processor. Improve the sound quality of component speakers by ditching your passive network.  Avoid added phase shifts and power losses by individually powering each component and assigning your own frequency bands for the incredible sound you’re looking for.

The “R” line of speakers and subwoofers have a heritage of sound quality you can hear from a block away, and the newly added R-Series amplifiers are no exception.  Aside from their best-in-class performance, these amplifiers are tuned to emphasize the characteristics of the R-Series speakers and subwoofers, giving you that legendary R-Series experience .

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.

This tiny amplifier can be installed with an aftermarket or factory head unit, resulting in up to 4 times the power increase over the head unit's original built-in power.

Alpine® 4-Channel Weather Resistant Tough Power Pack Amplifier

Alpine's Class D amplifier circuit with Dynamic Peak Power (D.P.P.)

150W x 4 D.P.P. (2O/4O, 14.4V, = 1% THD+N)

CTA-2006-B Specifications: 75W RMS x 4 (2O/4O, 14.4V, = 1% THD+N)

OEM-grade Tyco 26-pin connector with pigtail wire harness

Speaker/RCA inputs (Selectable, High range=0.5-10V, Low range=0.2-4V)

Crossovers: Off/HP/LP, Fc=50-400Hz @ -12dB/Oct. (variable)

A Sound System Boost Without The Big Space Commitment

The KTA-F30W is perfect for when you want to boost your sound system but don’t have the space for a large amplifier. It is compatible with an aftermarket or factory head unit and adds up to 4 times the power over the head unit's original built-in power.

The KTA-30FW features Alpine’s exclusive Dynamic Peak Power (DPP) technology which uses a new dynamic power supply design that delivers bursts of power during rigorous musical passages. When the amplifier senses that more power is required, the power supply quickly increases the internal gain level, effectively doubling the power for a significant increase in dynamic range at high music volumes.

The KTA-30FW is ready for your adventures. It is weather resistant, rated at IP66 for protection again dust ingress and high-pressure water spray. The KTA-30FW features a rugged chassis and high-quality waterproof connector so it can be used in installations where it will be exposed to the elements, like side-by-sides, boats, open-top vehicles and motorcycles.

Half The Size Of Our Smallest Traditional Amplifiers

The KTA-30FW measures just 9-3/16" (W) x 1-5/8" (H) x 3-3/4" (D), so its small footprint lets it fit where most amplifiers won't. The KTA-30FW can be tucked away under the dash or in the glove compartment, installed under the dash of a side-by-side, placed in the saddlebag of a motorcycle, or used in other places where space is an issue.

The next generation of Power Pack is here! The compact KTA-450 Power Pack Amplifier utilizes Alpine’s exclusive DPP technology for a big power boost in a small space.

Alpine® 4-Channel Power Pack Amplifier with PowerStack Capability

Compact size, measuring just 7” W x 3.5” H x 1.25” D

Dynamic Peak Power (DPP) technology doubles the power during dynamic musical passages

PowerStacking bracket included for mounting to the iLX-W650 7” Mech-less AV Receiver (sold separately)

The KTA-450 used with the iLX-W650 is a 2019 CES Innovation Awards Winner

DPP Power Rating: 100W DPP x 4 (2/4 Ohm, 14.4V, =1% THD+N)

CTA-2006 Power Rating: 45W RMS x 4 (2/4 Ohm, 14.4V, =1% THD+N)

Exclusive Amplifier Technology, Dynamic Peak Power (DPP)

The KTA-450 can mount behind select Alpine 2-DIN mech-less head units, like the iLX-W650, using the included bracket. The KTA-450’s recessed harness receptacle allows the wiring to fold between it and the head unit so both products fit in a standard 2-DIN space. This PowerStack design is a 2019 CES Innovation Awards winner  and makes the duo one of the most powerful 2-DIN radios available.

The KTA-450 features Alpine’s exclusive Dynamic Peak Power (DPP). DPP intelligently adjusts the gain to adapt to musical needs. DPP prevents the KTA-450 from clipping by supplying up to double the power for sudden, dynamic sounds. DPP ensures music sounds the way it should at high volumes and boosts the KTA-450 to 400 watts DPP, doubling its power without increasing its size.

Compact Size For Hidden Installation Applications

The KTA-450 measures just 7” W x 3.5” H x 1.25” D.  For vehicles that do not have the space for a traditional amplifier, the KTA-450’s small size allows it to be tucked away in hidden areas such as in the glove box or behind the radio. It could even be used in a motorcycle’s saddlebag or on a boat.

Simple Installation For Use With Any Radio

Thanks to the efficient power needs of the DPP technology, the KTA-450 does not require a new power supply wire at the battery, so installation is fast using the supplied radio power wires. In addition, the KTA-450 uses a 22-pin power harness with a recessed design on one side, so the cables can be tucked-in for a cleaner, less-bulky installation.

Primed for Performance, the R2-500X4 amplifier is a 500 watt, full-range class-D, capable of operating at 4Ohms or 2Ohms stereo, and 4Ohms bridged/mono. This amplifier is extremely efficient because of its class D technology which reduces demand on the ve

Rockford Fosgate® Prime 500 Watt 4-Channel Amplifier

The Prime Series were developed for car audio fanatics that want a reliable amplifier – with all the power and performance you’ve come to expect from Rockford Fosgate – at an economical price. Rockford Fosgate amplifiers are renowned world-wide for being “under rated,” easily surpassing all specifications, and most importantly, generating more power than their ratings. The latest generation of Prime Series amplifiers are also designed to be easy to setup and configure, making them perfect for use with factory audio or custom aftermarket systems.

Balanced Differential Inputs with RCA Pass Through Outputs

Auto-Sense bypass switch for vehicles with RAP (Retained Accessory Power)

Front and Rear Variable Input Gain adjustment level

Fully Adjustable 12 dB/octave High and Low pass Butterworth Crossovers

Power ratings on Rockford Fosgate amplifiers conform to CEA-2006 industry standards. These guidelines mean your amplifier's output power ratings are REAL POWER numbers, not inflated marketing ratings.

A full-range version of the Class-D topology which is a high efficiency amplifier design that reduces current consumption from the charging system.

C.L.E.A.N. (Calibrated Level Eliminates Audible Noise) is a patented circuit with in/out clip LEDs to help match a source to amp and optimize output.

Maximum Efficiency Heat Sink Application (4th Generation)

MEHSA4 reduces MOSFET temperatures, lowers distortion, increases durability and prolongs the output device life span.

Differential inputs eliminate noise picked up by signal cables.

NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances.

During demanding musical conditions, the amplifier can dynamically reduce demand to prevent stress on the output devices.

This product fulfills all essential safety and environmental requirements as defined in the European Directives (768/2008 EC).

Primed for Performance, the R2-500X4 amplifier is a 500 watt, full-range class-D, capable of operating at 4Ohms or 2Ohms stereo, and 4Ohms bridged/mono. This amplifier is extremely efficient because of its class D technology which reduces demand on the vehicles electrical system. The amp also features C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass.

Primed for Performance, the R2-300X4 amplifier is a 300 watt, full-range class-D, capable of operating at 4Ohms or 2Ohms stereo, and 4Ohms bridged/mono. This amplifier is extremely efficient because of its class D technology which reduces demand on the ve

Rockford Fosgate® Prime 300 Watt 4-Channel Amplifier

Primed for Performance, the R2-300X4 amplifier is a 300 watt, full-range class-D, capable of operating at 4Ohms or 2Ohms stereo, and 4Ohms bridged/mono. This amplifier is extremely efficient because of its class D technology which reduces demand on the vehicles electrical system. The amp also features C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass.

The KTP-445U Universal Power Pack amplifies both an aftermarket or factory installed head unit power output, resulting up to a 150 percent power increase over the original power from the head unit's built-in amplifier.

Alpine® 4 Channel Universal Power Pack Car Amplifier

Add higher output and more dynamic response with this easy-to-install Universal Power Pack upgrade.

For aftermarket and factory installed systems

Compact size lets the KTP-445U fit where most amplifiers won’t. The KTP-445U comes equipped with the RCA and Auto-Sensing-Speaker level connectors and it fits behind the head unit in the dash of most vehicles. It's small and compact at only 7-7/16” x 1-1/2” x 2-1/2”. The size and flexible wires make the Power Pack an easy choice to save space.

Independent Filters For Rear and Front Inputs

High-Pass selectable switches for Front & Rear allow frequency filtering for a wide variety of speakers. Choose from full range to selectable range: 60Hz, 80Hz or 120Hz to fine-tune your crossover points.

Need configurable options for Speaker-Level or RCA inputs to the Power Pack? On the bottom panel of the Power Pack there are selectable input options to accommodate Speaker-Level (0.5V-10V) or RCA (0.2V – 4V) inputs. Selectable 2 Channel and 4 Channel options give you the control to determine source inputs, and can eliminate the need for Y-adapters.

The Power Pack provides simple variable gain controls on the end panel for flexibility and a wide variety of system applications.

Best Signal-To-Noise Contender In Its Class

In order to ensure that Alpine sound quality is heard at your ears, we’ve created a platform that offers an unbelievably low noise floor, taking extra care to ensure a clean signal path, with no extraneous interference. The end result: The Power Pack boasts 1 Watt Signal-to-Noise Ratio of 82dB or better.

Total Harmonic Distortion (THD+N) Vs. Frequency

Uniquely, the Power Pack distortion actually decreases at higher frequencies, resulting in a clean and clear signal where your ear is most sensitive to distortion. - < 0.03% THD+N @ 1W, 1% THD+N @ rated power.

Kenwood Compact Bluetooth 4 Channel Digital Amplifier

With today's smartphones hosting a wide variety of listening choices such as stored music, internet radio, podcasts, etc., it is no wonder that customers want to use this as their primary listening source. Bluetooth offers the easiest and most popular connection, KAC-M1824BT is not only your standalone Bluetooth gateway but if used with an in-dash receiver, it will double the power of a typical CD receiver with it's built-in 45Watts x 4 of amplification. A water resistant controller can be used to adjust volume and change tracks.

Many of today's powersports have very limited space to work in and tend to be a harsh environment for electronics because of the exposure to outdoor environments. KENWOOD's compact performance amplifiers are small in size so they fit even the most limited installation areas. The amplifiers also use a conformal coated main PCB (printed circuit boards) which offer extra layers of protection to help prevent moisture or damp air from damaging the product.

The KAC-M1824BT remote control is designed to be mounted in places that are exposed to the elements. To operate in these conditions the remote control has a IPX-5 certification. This water resistant certification is the grade at which a device continues to function when directly subjected to 12.5 L of water per minute from all directions using a 6.3 mm inside diameter nozzle at a distance of approximately 3m for at least 3 minutes. This level of water resistance makes it perfect for ATV, Motorcycles and boats.

The KTP-445A Power Pack amplifies power output on select 2005 and newer Alpine head units, resulting in up to a 150 percent power increase over the original power from the head unit's built-in amplifier.

Alpine® 4-Channel Power Pack Car Amplifier

Add higher output and a more dynamic response with this easy-to-install Alpine head unit Power Pack upgrade.

For select 2005 and newer Alpine head units

Compact size lets the KTP-445A fit where most amplifiers won’t. The KTP-445A comes equipped with direct plug-in connectors for select 2005 and newer Alpine head units and it fits behind the dash of most vehicles. It's small and compact at only 7-7/16” x 1-1/2” x 2-1/2”. Its size and flexible wires make the Power Pack an easy choice to save space.

In order to ensure that Alpine sound quality is heard, we’ve created a platform that offers an unbelievably low noise floor, taking extra care to ensure a clean signal path, with no extraneous interference. The end result: The Power Pack boasts 1 Watt Signal-to-Noise Ratio of 82dB or better.

Total Harmonic Distortion (THD+N) vs. Frequency

Uniquely, the Power Pack distortion actually decreases at higher frequencies, resulting in a clean and clear signal where your ear is most sensitive to distortion. - <0.03% THD+N @ 1W, 1% THD+N @ rated power.

4-Channel Amps

Alpine® 4 Channel Power Amplifier

$799.95

Alpine® 4 Channel Universal Power Pack Car Amplifier

$289.95

Alpine® 4-Channel Power Pack Amplifier with PowerStack Capability

$219.95

Alpine® 4-Channel Power Pack Car Amplifier

$279.95

Alpine® 4-Channel Weather Resistant Tough Power Pack Amplifier

$419.95

Alpine® R-Series 4/3/2 Channel Power Density Amplifier

$499.95

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

$219.95

Kenwood Class D 4 Channel Power Amplifier

$450.00

Kenwood Class D Mono 4-Channel Power Amplifier

$300.00

Kenwood Compact Bluetooth 4 Channel Digital Amplifier

$300.00

Rockford Fosgate® Prime 300 Watt 4-Channel Amplifier

$219.99

Rockford Fosgate® Prime 500 Watt 4-Channel Amplifier

$329.95

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