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We are proud to present the renovated SR 4.500 (130 W x 4 @ 4O) introduced back in 1988 and constantly updated with the best technologies available.  

Audison Black 4-Channel Amplifier 

Class D amplifiers are also called “switching amplifiers”, since their efficiencies are arrived at by rapid on and off switching of the output transistors. Audison Class D uses a much higher switching frequency than most other amplifiers. You might think the switching frequency for all Class D amps are the same, but Class D chipsets allow significant latitude in many design aspects, such as switching frequency and timing. Most companies use as low a switching frequency as possible – this makes the timing easier to manage, and allows the use of lower-precision components which cost less. ACD uses a switching frequency twice as fast as many other modern Class D amplifiers. Higher switching frequencies require incredibly precise timing, which require higher-tolerance components to be used in order to keep the timing pulses from overlapping (that causes catastrophic failure of the output transistor). Audison uses very high-tolerance component parts to keep the timing correct even during temperature extremes (temperature changes shift the values of analog components). To Audison, this is worth the cost, since the higher switching frequency of Audison Class D moves noise much farther away from the audible band.

Audison Class D also uses a steeper 4th-order analog lowpass filter, rather than the simpler 2nd-order lowpass filters usually used in competing designs. The steeper filter will keep noise much lower in amplitude – which is good for controlling EMI and for preventing infrasonic noise getting to the tweeters. It also keeps phase shift outside the audible range. The cost is higher – twice as many components are needed for a 4th order filter compared to the usual 2nd-order filter, and each output channel needs its own filter – but Audison determined through exhaustive listening testing that this design was the best-sounding approach.

As for the electronics design, the Audison style center has taken care of every aesthetic and functional detail, obtaining a compact amplifier made of extruded aluminium with rounded corners that ease the installation of the product in narrow spaces. Thanks to the generous heat sinks on the two short sides of the amplifiers, internal cooling fans are not necessary, which are often cause of noise and dust accumulation.

As per tradition, the SR amplifiers confirm their vocation for versatility by including on all models a complete filter section, suitable for any type of audio system configuration. The controls, protected by a satin-finish aluminium panel, are located on the amplifier upper panel, to be easily reached from above even after the product has been installed. When the system includes an Audison bit processor, the filter section can be totally excluded.

Thanks to the integration of Audison USS technology (Universal Speakers Simulator) in the high-level inputs, the SR amplifiers can also be appropriately connected to OEM sources featuring the “speaker load detection” function that monitor the presence of a low-impedance load to enable audio outputs.

All models are equipped with high-level balanced inputs for connection to the OEM Head Unit speakers output and low RCA level for the after-market ones. When the high level input is used, the ART function (Automatic Remote Turn-On / Off) can be enabled to control the switching on of the amplifiers with the head unit switch-on button.

In addition, there is a remote IN / OUT socket to allow the control of multiple cascaded amplifiers switch on when required.

The SR 1.500, SR 4.300 and 4.500 models recreate the PRE-OUT signal by using the Speaker-IN input to interface it with OEM sources only equipped with amplified outputs, allowing the system expansion.

Class D amplifiers are also called “switching amplifiers”, since their efficiencies are arrived at by rapid on and off switching of the output transistors. Audison Class D uses a much higher switching frequency than most other amplifiers. You might think the switching frequency for all Class D amps are the same, but Class D chipsets allow significant latitude in many design aspects, such as switching frequency and timing. Most companies use as low a switching frequency as possible - this makes the timing easier to manage, and allows the use of lower-precision components which cost less. ACD uses a switching frequency twice as fast as many other modern Class D amplifiers. Higher switching frequencies require incredibly precise timing, which require higher-tolerance components to be used in order to keep the timing pulses from overlapping (that causes catastrophic failure of the output transistor). Audison uses very high-tolerance component parts to keep the timing correct even during temperature extremes (temperature changes shift the values of analog components). To Audison, this is worth the cost, since the higher switching frequency of Audison Class D moves noise much farther away from the audible band.

Audison Class D also uses a steeper 4th-order analog lowpass filter, rather than the simpler 2nd-order lowpass filters usually used in competing designs. The steeper filter will keep noise much lower in amplitude - which is good for controlling EMI and for preventing infrasonic noise getting to the tweeters. It also keeps phase shift outside the audible range. The cost is higher - twice as many components are needed for a 4th order filter compared to the usual 2nd-order filter, and each output channel needs its own filter - but Audison determined through exhaustive listening testing that this design was the best-sounding approach.

We are proud to present the renovated SR 4.300 (85 W x 4 @ 4O) introduced back in 1988 and constantly updated with the best technologies available.  

The link300.4mini is in a class by itself. The most obvious thing is its extremely small size, but don’t Iet that fool you. Unlike most small footprint amplifiers, the link300.4mini is bridgeable. It can easily drive a nice set of components as well as a subwoofer. The link300.4mini has Wavtech’s best in class LOC, with built-in loading and the ability to handle up to 40V of hi-level input.   Perhaps the most unique feature is the built-in summing. For factory audio systems that don’t have a full range signal, the link300.4mini can handle that internally, so no additional processor is required. The level trim adjustment allows for fine tuning the output of each pair of channels.  As if all of that isn’t enough, the link300.4mini is compatible with OEM start/stop systems as well. 

The link300.4mini is in a class by itself. The most obvious thing is its extremely small size, but don’t Iet that fool you. Unlike most small footprint amplifiers, the link300.4mini is bridgeable. It can easily drive a nice set of components as well as a 

LINK300.4MINI Compact 4 Channel Amplifier

Small Footprint Only 6.4”x4.5”x1.65”

Variable Hi/Low Pass Crossover (-12dB/oct)

Auto Turn-On via DC-Offset or Audio Signal Detect

Locking Detachable Hi-Level Speaker Terminals

Compact Aluminum Chassis w/Detachable Mounting tabs

Input Sensitivity   SPK --------------------------- 1-20Vrms, 2-40Vrms  RCA --------------------------- 0.2V-5Vrms, 0.4V-10Vrms  Max Input Voltage (SPK) ------ 40Vrms  Frequency Response ----------- <10Hz to >45kHz (+0/-3dB)  THD+N ------------------------------- <1% at rated power  S/N ------------------------------------- >80dBA (1W, 4Ω)

A pair of new front speakers and a subwoofer is one of the most common aftermarket audio upgrades.  The link500.4mini is the perfect amplifier for this application.  When used in 3-channel mode, the amplifier can produce 125 watts x 2 for the main speaker

link500.4mini Compact 4 Channel Amplifier

Remote Level Control (RLC) w/Optional linkRC (CH 3/4)

lin500.4mini Specifications  Input Sensitivity   SPK --------------------------- 1-20Vrms, 2-40Vrms  RCA --------------------------- 0.2V-5Vrms, 0.4V-10Vrms  Max Input Voltage (SPK) ------ 40Vrms  Frequency Response ----------- <10Hz to >45kHz (+0/-3dB)  THD+N ------------------------------- <1% at rated power  S/N ------------------------------------- >80dBA (1W, 4Ω)

A pair of new front speakers and a subwoofer is one of the most common aftermarket audio upgrades.  The link500.4mini is the perfect amplifier for this application.  When used in 3-channel mode, the amplifier can produce 125 watts x 2 for the main speakers and 250 watts x 1 for the subwoofer, so it won’t lack for power.  Speaking of the subwoofer, channels 3/4 have a 1-band PEQ, a subsonic filter and the ability to add an RLC to fine tune the subwoofers performance.  The link500.4mini has Wavtech’s link4 built-in, with internal loading and the ability to handle up to 40V of hi-level input. It also has fully adjustable high and low pass crossovers.  For factory audio systems where no full-range signal is present, the link500.4mini has built-in summing, so it can handle that internally, without the need for an outboard processor.  Like all Wavtech amplifiers, the link500.4mini is start/stop system compatible.

Listen to the subtlest nuances of studio-quality sound in higher than CD quality with High-Resolution Audio. Feel as if the artist was performing right in front of you.

Mobile ES™ 4-channel Power Amplifier

100 W x 4 (330 W x 2 bridged) RMS output power at 4 ohms

Signal summing for seamless connection to factory audio and combined pre-outs

Updated connection terminal/control panel design

Enjoy dynamic sound with an output power of 100W x 4 (330W x 2 bridged) RMS at 4 ohms / 165W x 4 RMS at 2 ohms. The highly efficient class-D amplifier provides a variety of speaker configurations to suit any car and impress any audio enthusiast.

Listen to the subtlest nuances of studio-quality sound in higher than CD quality with High-Resolution Audio. Feel as if the artist was performing right in front of you.  The XM-4ES 4-channel amplifier is engineered to enhance every track — including High-Resolution Audio files. A range of premium circuit components work together for ultimate efficiency and pitch-perfect sound reproduction, giving every road trip the soundtrack it deserves.

Sony’s expertise and long years of engineering experience with digital amplifiers has made it possible to realize a compact and powerful amplifier, with uncompromising sound quality.

The power supply block is optimally designed for low-noise, highly efficient electric power transmission, where the DC converter with a toroidal core transformer is chosen for less electro-magnetic interference. To reproduce delicate ultra-high-frequency sound, each channel block and the class-D amplification are all isolated with their own ground circuitry, minimising any signal interference.

The upgraded inductors with OFC wires are selected for lower internal resistance and improved sound character, while the high-capacity electrolytic capacitors contribute to precise and responsive bass.

The rigid, 1.2mm, cross-braced bottom plate reduces resonance by approximately and shifts resonance peaks away from the harsh vehicle vibration frequency bands, upgrading damping performance dramatically.

Enhanced logical control and connection placement

Controls for adjustments, and placement of connections, are logically placed for easy understanding and use. The carefully considered layout ensures both intuitive operation and installation simplicity.

The speaker terminal features Hex-key screws, providing a durable method of tightening the wire connections while accepting bare wire or wire ferrules (up to AWG #8) for superior electrical performance and high-quality sound, and safe connection.

The redesigned control panel features logical placements with easy-to-understand correlation, and updated graphics.

Signal summing for seamless connection to factory audio

The new signal summing feature combines filtered audio signals from modern factory car audio systems, such as those for the separate tweeter, woofer and subwoofer, accurately amplifying the full stereo frequency range easily. And you can even send the consolidated line-level signal onto other mono or stereo amps in the chain, allowing for flexible installation in various types of vehicles and audio system setups.

Channel Configuration

High Pass Filter

Low Pass Filter

Low-Pass Filter Slope

High Pass Filter Slope

CTA S/N

Signal to Noise Ratio

4 ohms

2 ohms

Micro amplifiers by Memphis are a great choice for any limited space application. These amps feature an IP66 weather rating and sealed pots and wire harness allowing them to handle extreme environments. Their compact micro design makes them perfect for mo

Memphis Micro 4 Channel Amplifier

Micro amplifiers by Memphis are a great choice for any limited space application. These amps feature an IP66 weather rating and sealed pots and wire harness allowing them to handle extreme environments. Their compact micro design makes them perfect for motorcycle and other small powersports applications. Don’t let the small size fool you, these amplifiers churn out big power where it is needed.

RMS POWER 4Ω

THD% 4Ω

FREQ RESPONSE

DIMENSIONS L xW x H

INPUT RANGE

The Excelon X303-4 4-Channel Power Amplifier delivers high-resolution output to your front and rear speakers.

Kenwood X303-4 Class D 4-Channel Power Amplifier

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

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.

Prevents magnetic flux from radiating from the subwoofer's coil, resulting in reduced noise and enhanced sound quality.

PMLCAP's (Polymer Multi-Layer Capacitors) are utilized in the LC filter circuits to decrease distortion, ensuring clear detail for a truer to life sound.

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.  Gauge-style terminals lock wire into position with set screw for secure installation.

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

The Wāvtech mini series amplifiers pack an incredible amount of power and features into an extremely small package.  Still, with a width of only 4.5”, there are some limitations.  That is where the plus series comes in.  While still incredibly small at ju

link700.4plus 4 Channel Car Audio Amplifier

Small Footprint Only 10.25”x5.5”x1.65”

Variable HP Crossover (-12dB/oct) with 1x/10x CH1/2

Variable HP/BP/LP Crossover (-12dB/oct) CH3/4

Variable LP Crossover (-24dB/oct) RCA Pre-Out

Variable Subsonic Filter (-24dB/oct) RCA Pre-Out

Remote Level Control (RLC) w/Optional linkRC (Channels 3/4 or RCA Pre-Out)

bassFREQ Bass Processor w/Parametic EQ (CH 3/4 or Pre-Out)

The Wavtech mini series amplifiers pack an incredible amount of power and features into an extremely small package.  Still, with a width of only 4.5”, there are some limitations.  That is where the plus series comes in.  While still incredibly small at just 5.5” wide, that extra 1” opens up some interesting possibilities.   Introducing the link700.4plus.  The link700.4plus is the most versatile 4-channel amplifier available.  Like our mini series multi-channel amplifiers, the plus series models have built-in summing.  But with the additional width, we can now accommodate 6-channels of input.  That means you can sum a 3-way OEM system and get front and rear full-range output, plus an RCA Pre-Out for a subwoofer amplifier.   It is powerful, producing 100 watts x 4 RMS @ 4 ohms, or 175 watts RMS x 4 @ 2 ohms.  In BTL mode the power is 350 watts x 2 RMS @ 4 ohms.  The link700.4plus has our bassFREQ processor, with 24 dB/octave lowpass and subsonic filters, as well as a fully adjustable 1-band parametric EQ.  The optional RLC can be configured to control channels 3/4 when in lowpass mode, or the RCA Pre-Out.

Mille power amplifiers are born to fully enhance the outstanding performance of the Mille speakers. The new ADC (ADVANCED D-CLASS TECHNOLOGY) ensures pure listening pleasure while keeping a compact size with unmatched power efficiency.

Hertz Mille Power D-Class 4 Channel Amplifier

Mille power amplifiers are born to fully enhance the outstanding performance of the Mille speakers. The new ADC (ADVANCED D-CLASS TECHNOLOGY) ensures pure listening pleasure while keeping a compact size with unmatched power efficiency. The heat sink, engineered with double technology, extrusion and aluminium die-casting, enables the Mille Power amplifiers to work constantly at full power without ever overheating, further maximizing thermal efficiency. The Hertzaudio car amplifier ML Power 4 (4 x 250 W 2 O) is the obvious choice for a top level front-rear Mille system.

Ensures pure listening pleasure while keeping a compact size with unmatched power efficiency.

It monitors the amplifiers operating status in real time pointing out possible faults such as overheating, excessive loads on the outputs or short-circuits on cables or loudspeakers. This information allows the user to identify possible issues with the installation and to intervene before the amplifier goes into protection to prevent any damages.

The ML Power IN module features a Speaker In input (with balanced circuitry minimizing noise) for OEM head units and an RCA IN input for aftermarket sources. When the Speaker In is used, the ART™ function (Automatic Remote Turn On-Off) is enabled, managing the amplifier remote turn on to avoid unpleasant “bumps”.

The heat sink, engineered with double technology, extrusion and aluminium die-casting, enables the Mille Power amplifiers to work constantly at full power without ever overheating, further maximizing thermal efficiency.

Audison Thesis Black 4-Channel Amplifier 

TH quattro  is a four-channel amplifier fully adjustable and entirely manageable by the internal microprocessor, for limitless system configurations.

Pure digital signal transfer with a resolution up to 24 bit / 96 kHz

Innovation is at the heart of the state-of-the-art digital decoding section. The S/PDIF optical input allows direct connection to digital sources with the ability to re-launch the digital signal to other Thesis amplifiers through the AD Link (Audison DigitalLink) system. Each amplifier features 192 kHz/24 bit PCM D/A conversion through a very high quality converter.

Provides the selection of four possible presets: Energy Saving, Hi-Current, Hi-AB Class and full A Class operation.

Inherited from the HV venti and making the most of TH’s extreme versatility, the complete crossover circuit of the TH amplifier is removable; a high-end sound quality solution.

Four Synchro-PWM power supplies allow for a very fast transient current response and to create a Dual Mono configuration.

According to the definition of HiRes audio provided by JAS (Japan Audio Society - jas-audio.or.jp), HV venti far exceed the above 40 kHz bandwith analog requirement, providing an astonishing 5 ÷ 75k Hz (@ -3 dB, 2 VRMS, 4 Ω).

Thesis amplifiers are born with the know-how and experience achieved with the HV venti, improved by the innovation of digital technology. The result is a perfect combination between the highest level of analog technology and the advanced features of the digital technology in one unique product. The precious synergy with Full DA HD technology takes the in-car listening experience to a new level of excellence; the synthesis of a unique know-how employed in mobile audio reproduction.  

AV quattro is a four-channel amplifier which can work in four, three, two channel mode, delivering 1700 W (RMS) power total. It is designed to handle complex configurations as front/rear and multi-channel systems. 

Audison Voce 4-Channel Amplifier 

AMP (Amplifier Management Processor) constantly checks the operating status system and communicates with the user through 4 different coloured LEDs, located on the top panel; ART (Automatic Remote Turn On-Off) allows automatic turn-on/off when a remote signal isn’t available from the source; up to 24 dB/Oct. slope crossovers allow to build front-rear, front-sub or multi-amplified systems while still ensuring a non-filtered output signal to expand the system.

According to the definition of HiRes audio provided by JAS (Japan Audio Society - jas-audio.or.jp), Voce amplifiers exceed the above 40 kHz bandwith analog requirement, providing an astonishing 4 ÷ 60k Hz (@ -3 dB, 2 VRMS, 4 Ω).

AP4.9 bit amplifier is ideal to realize a powerful two way front full active. The built-in processor, that this amplifier shares with the AP8.9 bit, provides the ability to assign the pre-outs to the AP1 D amplifier, creating a very powerful system in a s

Audison Prima Forza Black 4-Channel Amplifier 

Pure digital signal transfer with a resolution up to 24 bit / 48 kHz.

Auto tuning by Audison bit Tune and communication with bit Drive portal.

De-equalization function to “flatten” any equalization applied by default by OEM sources.

To speed-up installation time preserving safety and reliability, the Audison R&D team equipped the AP bit amplifiers with DCC, an innovative management circuit which monitors the power supply current consumption in real-time. This solution provides the ability to connect the amplifier to the cockpit directly without reaching the battery.

When AP bit amplifiers are installed into a compatible vehicle using the iDatalink Maestro AR (sold separately), the user can enjoy a perfect integration with factory installed navigation, advanced safety systems, voice-controlled hands-free and infotainment. (Only for North America)

AP4.9 bit amplifier is ideal to realize a powerful two way front full active. The built-in processor, that this amplifier shares with the AP8.9 bit, provides the ability to assign the pre-outs to the AP1 D amplifier, creating a very powerful system in a small space thanks to the “rack mounting” system.  

The AP4 D amplifier was designed as an extension for the AP 4.9 bit and AP 5.9 bit amplifiers, offering 4 additional 70 W amplified channels.  

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