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  1. Home
  2. Discontinued Car Audio & Electronics
  3. Discontinued Car Amplifiers
  4. Discontinued Class-D Amplifiers

Discontinued Class-D Amplifiers

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Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
Amplifier Key Features
Amplifiers can offer a diverse array of features. If you select more than one feature, then you will view amplifiers that have ALL features selected. These include speaker-level inputs that facilitate seamless integration with factory audio systems, Bluetooth connectivity suitable for ATV/UTV or Classic vehicle setups, built-in DSPs that provide enhanced control over your audio signal, and a host of other functionalities to explore.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Brutus Series (49)
Zeus Series (38)
KX Series (15)
MD Series (15)
Phantom Series (15)
X Series (15)
CX Series (14)
Picasso-Nano Series (14)
Kappa Series (12)
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ONYX Series (11)
Reference Series (11)
VC Series (11)
Bass Series (10)
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N Series (8)
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iON Series (7)
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Power Reference (7)
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MOJO Pro Series (6)
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Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Remote bass/level controller
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Sonic Certified Amplifier
Sonic Certified amplifiers have been tested by the experts at Sonic Electronix to meet or exceed the wattage ratings provided by the manufacturer. If this is marked as Yes, then you can trust the wattage ratings. If marked as No, then we have tested the amplifier and it did not meet the advertised wattage ratings. If marked as Not Tested, then the Sonic Electronix experts have not yet been able to test the amp.
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Amp Bluetooth Connectivity
This feature will tell you if the amplifier has the capability to connect to a Bluetooth device.
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You are currently viewing discontinued products.

Phoenix Gold R5.0:1

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Phoenix Gold R5.0:1

500W RMS @ 2 ohm, Class D MonoBlock amplifier

500W RMS @ 2 ohm, Class D MonoBlock amplifier

MTX HCS06FB10A-TN

Fits Select 2006-2012 Honda Civic Vehicles - Amplified 10" 200W Loaded Thunderform Subwoofer Enclosure - Black

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MTX HCS06FB10A-TN

Fits Select 2006-2012 Honda Civic Vehicles - Amplified 10" 200W Loaded Thunderform Subwoofer Enclosure - Black

• 200W Single 10" Sealed Subwoofer Enclosure with Built-In Amplifier
• RMS: 200 W Total
• Preloaded with single 10" Terminator-Series Subwoofers
• 10" Sealed Vehicle Specific Enclosure
• Sealed enclosure with factory finish - Black

• 200W Single 10" Sealed Subwoofer Enclosure with Built-In Amplifier
• RMS: 200 W Total
• Preloaded with single 10" Terminator-Series Subwoofers
• 10" Sealed Vehicle Specific Enclosure
• Sealed enclosure with factory finish - Black

EXCLUSIVE

JL Audio Class D Amplifier + Two FREE NVX 10" VC-Series Subwoofers

JL Audio Slash 1200/1v3 1200W Monoblock Slash v3 Series Class D Amplifier + NVX VCW102 10" VC-Series Dual 2-ohm Subwoofers

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JL Audio Class D Amplifier + Two FREE NVX 10" VC-Series Subwoofers

JL Audio Slash 1200/1v3 1200W Monoblock Slash v3 Series Class D Amplifier + NVX VCW102 10" VC-Series Dual 2-ohm Subwoofers

• 1200W x 1 @ 2 ohm
• Pressed Paper Cone With Woven Fiber Top
• High Roll Foam Surround
• Die-Cast Aluminum Basket
• Dual 2-ohm Voice Coil
• Dual Poly-Cotton Spiders
• R.I.P.S. (Regulated, Intelligent Power Supply)
• Parametric Bass Boost EQ
• Fully Variable Infrasonic Filter
• Dimensions: 19.70"L x 9.25"W x 2.36"H

• 1200W x 1 @ 2 ohm
• Pressed Paper Cone With Woven Fiber Top
• High Roll Foam Surround
• Die-Cast Aluminum Basket
• Dual 2-ohm Voice Coil
• Dual Poly-Cotton Spiders
• R.I.P.S. (Regulated, Intelligent Power Supply)
• Parametric Bass Boost EQ
• Fully Variable Infrasonic Filter
• Dimensions: 19.70"L x 9.25"W x 2.36"H

EXCLUSIVE

Kicker & Hifonics - Dual 12" Bass Bundle

Kicker 40CWS122 (CompS122) 12" Comp S-Series Single 2-Ohm Subwoofer + Hifonics HFi1500D Class D Monoblock HFi Series Amplifier (HFi 1500D)

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Kicker & Hifonics - Dual 12" Bass Bundle

Kicker 40CWS122 (CompS122) 12" Comp S-Series Single 2-Ohm Subwoofer + Hifonics HFi1500D Class D Monoblock HFi Series Amplifier (HFi 1500D)

• 4 ohm: 500 watts x 1 chan.
• Injection-Molded Polypropylene Cone
• Ribbed Polyurethane Surround
• Large-Diameter Spider
• High-Strength Spiralead Tinsel Leads
• Wired remote bass level control included
• Preamp RCA outputs to daisy chain multiple amps
• 3-way protection circuitry (thermal, overload, and speaker short protection)
• Dual speaker terminals simplify the hookup of multiple speakers
• Signal to Noise Ration: >95 dB

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• 4 ohm: 500 watts x 1 chan.
• Injection-Molded Polypropylene Cone
• Ribbed Polyurethane Surround
• Large-Diameter Spider
• High-Strength Spiralead Tinsel Leads
• Wired remote bass level control included
• Preamp RCA outputs to daisy chain multiple amps
• 3-way protection circuitry (thermal, overload, and speaker short protection)
• Dual speaker terminals simplify the hookup of multiple speakers
• Signal to Noise Ration: >95 dB

Power Acoustik SL-5500D ( SL5500D )

5500W Max, Class D Monoblock Amplifier

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Power Acoustik SL-5500D ( SL5500D )

5500W Max, Class D Monoblock Amplifier

5500W Class D Monoblock Amplifier • 2100 watts @ 4 Ohm • • 3300W @ 2 Ohm • PWM power supply • four way protection circuit • system distress indicator • heavy duty power and speaker terminals

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5500W Class D Monoblock Amplifier • 2100 watts @ 4 Ohm • • 3300W @ 2 Ohm • PWM power supply • four way protection circuit • system distress indicator • heavy duty power and speaker terminals

Cerwin-Vega Stroker 2000.1 (STKR2000.1)

2000W RMS Stroker Series Monoblock Class GH Car Amplifier (STKR20001, S2000.1, S20001)

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Cerwin-Vega Stroker 2000.1 (STKR2000.1)

2000W RMS Stroker Series Monoblock Class GH Car Amplifier (STKR20001, S2000.1, S20001)

Stroker Series Monoblock Class GH Car Amplifier • 4 ohm: 1000 watts x 1 chan. • 2 ohm: 1500 watts x 1 chan. • 1 ohm: 2000 watts x 1 chan. • Clip indication LED's for simple amplifier system set-up

Stroker Series Monoblock Class GH Car Amplifier • 4 ohm: 1000 watts x 1 chan. • 2 ohm: 1500 watts x 1 chan. • 1 ohm: 2000 watts x 1 chan. • Clip indication LED's for simple amplifier system set-up

Visonik VXD609

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Visonik VXD609

Class-D Digital Amplifier • 300W RMS x 1 @ 2 • Bass Remote Included • 0-18dB Bass Boost • 3-Way Protection • Subsonic/Low-Pass Filters • Phase Shift Control • Adjustable Input Sensitivity

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Class-D Digital Amplifier • 300W RMS x 1 @ 2 • Bass Remote Included • 0-18dB Bass Boost • 3-Way Protection • Subsonic/Low-Pass Filters • Phase Shift Control • Adjustable Input Sensitivity

EXCLUSIVE

JL Audio Slash Amplifier + FREE Massive Audio 12" Summo Series Subwoofer

JL Audio Slash 1200/1v3 1200W Monoblock Slash v3 Series Class D Amplifier + Massive Audio SUMMO 124 12" Summo Series Dual 4 Ohm Subwoofer

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JL Audio Slash Amplifier + FREE Massive Audio 12" Summo Series Subwoofer

JL Audio Slash 1200/1v3 1200W Monoblock Slash v3 Series Class D Amplifier + Massive Audio SUMMO 124 12" Summo Series Dual 4 Ohm Subwoofer

• 1200W x 1 @ 2 ohm
• Kevlar Fiber Enhanced Non-Pressed Paper Cone
• EROM Foam Surround with Red Stitching
• R.I.P.S. (Regulated, Intelligent Power Supply)
• Parametric Bass Boost EQ
• Fully Variable Infrasonic Filter
• Dimensions: 19.70"L x 9.25"W x 2.36"H

12

• 1200W x 1 @ 2 ohm
• Kevlar Fiber Enhanced Non-Pressed Paper Cone
• EROM Foam Surround with Red Stitching
• R.I.P.S. (Regulated, Intelligent Power Supply)
• Parametric Bass Boost EQ
• Fully Variable Infrasonic Filter
• Dimensions: 19.70"L x 9.25"W x 2.36"H

EXCLUSIVE

Two JL Audio 10W3v3-4 + Polk Audio PA D1000.1

500W RMS 10" W3v3 Series Single 4-Ohm Subwoofer s + PA D Series Class-D Monoblock Amplifier

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Two JL Audio 10W3v3-4 + Polk Audio PA D1000.1

500W RMS 10" W3v3 Series Single 4-Ohm Subwoofer s + PA D Series Class-D Monoblock Amplifier

• 800 Watts RMS x 1 @ 2 ohm
• Sensitivity: 87.15 dB
• Mounting depth: 6.65 "
• Injection-molded, mineral-filled polypropylene cone
• Nitrile butadiene rubber surround
•Customization trim ring
• Floating Cone Attach Method
• DMA Optimized Motor
• Wired remote bass level control included
• CEA-2006 Compliant
• Signal to Noise Ration: 105 dBA
• Variable Bass Boost: 0 to +12 dB bass boost at 44 Hz
• Dimensions: 6-3/4" W x 12-15/16" L x 1-13/16" H

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• 800 Watts RMS x 1 @ 2 ohm
• Sensitivity: 87.15 dB
• Mounting depth: 6.65 "
• Injection-molded, mineral-filled polypropylene cone
• Nitrile butadiene rubber surround
•Customization trim ring
• Floating Cone Attach Method
• DMA Optimized Motor
• Wired remote bass level control included
• CEA-2006 Compliant
• Signal to Noise Ration: 105 dBA
• Variable Bass Boost: 0 to +12 dB bass boost at 44 Hz
• Dimensions: 6-3/4" W x 12-15/16" L x 1-13/16" H

Image Dynamics SQ600.1D

600W RMS SQ Series Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob Included

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Image Dynamics SQ600.1D

600W RMS SQ Series Class-D Monoblock 1-Ohm Stable Amplifier with Bass Knob Included

• 250 Watts RMS x 1 @ 4 ohm
• 400 Watts RMS x 1 @ 2 ohm
• 600 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 1200 Watts
• Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation
• Dimensions: 8-1/2"W x 17-3/4"L x 2-1/4"H

• 250 Watts RMS x 1 @ 4 ohm
• 400 Watts RMS x 1 @ 2 ohm
• 600 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 1200 Watts
• Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
• Heavy duty aluminum alloy heat-sink for extreme heat dissipation
• Dimensions: 8-1/2"W x 17-3/4"L x 2-1/4"H

Lanzar VIBE4000D

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Lanzar VIBE4000D

• Description Coming Soon! •

• Description Coming Soon! •

EXCLUSIVE

Alpine + NVX Full Range High Performance Amplified System w/ 6.5" Speakers

Alpine SPR-60C/Alpine SPR-60 6.5" 2-Way Type-R Component/Coaxial Speakers + NVX JAD800.4 Class D 4-Channel Amplifier w/ Amp Wiring Kit

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Alpine + NVX Full Range High Performance Amplified System w/ 6.5" Speakers

Alpine SPR-60C/Alpine SPR-60 6.5" 2-Way Type-R Component/Coaxial Speakers + NVX JAD800.4 Class D 4-Channel Amplifier w/ Amp Wiring Kit

• 4 ohm: 125 watts x 4-Chan.
• Hybrid Layered-Pulp Cone
• 4 Ohm Impedance
• 1" Textile ring-dome tweeter
• Pulse Width Modulated MOSFET Power Supply
• High speed rectifying diodes
• Heavy duty aluminum alloy heat-sink

• 4 ohm: 125 watts x 4-Chan.
• Hybrid Layered-Pulp Cone
• 4 Ohm Impedance
• 1" Textile ring-dome tweeter
• Pulse Width Modulated MOSFET Power Supply
• High speed rectifying diodes
• Heavy duty aluminum alloy heat-sink

EXCLUSIVE

Sonic Combo: 2 Kicker 08S12L74 + 1 MTX Audio TE1501D

3000W Max / 1500W RMS Matched System with 2 S12L7 Solo-Baric L7 12" Subs + 1 MTX Class D Amplifier

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Sonic Combo: 2 Kicker 08S12L74 + 1 MTX Audio TE1501D

3000W Max / 1500W RMS Matched System with 2 S12L7 Solo-Baric L7 12" Subs + 1 MTX Class D Amplifier

2 Awesome L7 Sub woofers Plus 1 Competition Level Thunder Elite Series Monoblock Class D Car Amplifier • Amp Power Output, RMS: 1500W / Max: 3000W • Fan-cooled • Overload and thermal protection • Sub Power Handling: RMS: 1500W per pair, Max: 3000W per pair • Titanium deposit impregnated cone woofer with rolled outer edge • Santoprene rubber surround • Highly-efficient UniPlate™ pole-piece/back plate

5

2 Awesome L7 Sub woofers Plus 1 Competition Level Thunder Elite Series Monoblock Class D Car Amplifier • Amp Power Output, RMS: 1500W / Max: 3000W • Fan-cooled • Overload and thermal protection • Sub Power Handling: RMS: 1500W per pair, Max: 3000W per pair • Titanium deposit impregnated cone woofer with rolled outer edge • Santoprene rubber surround • Highly-efficient UniPlate™ pole-piece/back plate

EXCLUSIVE

Kicker + Hifonics 750 Watt Amplified Bass Bundle

(2) Kicker CVR102 10" CompVR Series Dual 2 ohm Subwoofer + Hifonics HFi1000.1D Class D Monoblock HFi Series Amplifier

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Kicker + Hifonics 750 Watt Amplified Bass Bundle

(2) Kicker CVR102 10" CompVR Series Dual 2 ohm Subwoofer + Hifonics HFi1000.1D Class D Monoblock HFi Series Amplifier

• 2 ohm: 750 watts x 1 chan.
• Rigid SoloKon cone
• Double Stitched Surround
• Ribbed Santoprene Surround
• Spring-Loaded Terminals
• Spiralead Tinsel Leads
• Wired HFR-3 remote bass level control included
• Preamp RCA outputs to daisy chain multiple amps
• Frequency Response: 15 - 250 Hz
• Signal to Noise Ration: >95 dB
• Variable low-pass filter: 30 - 250 Hz, 24 dB/octave

161

• 2 ohm: 750 watts x 1 chan.
• Rigid SoloKon cone
• Double Stitched Surround
• Ribbed Santoprene Surround
• Spring-Loaded Terminals
• Spiralead Tinsel Leads
• Wired HFR-3 remote bass level control included
• Preamp RCA outputs to daisy chain multiple amps
• Frequency Response: 15 - 250 Hz
• Signal to Noise Ration: >95 dB
• Variable low-pass filter: 30 - 250 Hz, 24 dB/octave

SoundStorm (SSL) EV5000D Open Box

5000W Max, Evolution Series Class D Monoblock Power Amplifier with Remote Level Control

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SoundStorm (SSL) EV5000D Open Box

5000W Max, Evolution Series Class D Monoblock Power Amplifier with Remote Level Control

Evolution Series Class D Car Amplifier • Single-Channel Monoblock • 5000W x 1 Chan. @ 1 Ohm • 3500W x 1 Chan. @ 2 Ohm • 1800W x 1 Chan. @ 4 Ohm • LED Protection Indicators • DataLink for Strapping Amps Together

Evolution Series Class D Car Amplifier • Single-Channel Monoblock • 5000W x 1 Chan. @ 1 Ohm • 3500W x 1 Chan. @ 2 Ohm • 1800W x 1 Chan. @ 4 Ohm • LED Protection Indicators • DataLink for Strapping Amps Together

Alpine MRX-F30

300W RMS 4-Channel X Power Series Car Amplifier

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Alpine MRX-F30

300W RMS 4-Channel X Power Series Car Amplifier

MRX Series 4-Channel Car Amplifier • 50W RMS @ 4 Ohm x 4 Channels • 75W RMS @ 2 Ohm x 4 Channels • 150W RMS @ 4 Ohm Bridged x 2 Channels • Variable Low-Pass Crossover • Variable High-Pass Crossover • Variable Bass Boost

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MRX Series 4-Channel Car Amplifier • 50W RMS @ 4 Ohm x 4 Channels • 75W RMS @ 2 Ohm x 4 Channels • 150W RMS @ 4 Ohm Bridged x 2 Channels • Variable Low-Pass Crossover • Variable High-Pass Crossover • Variable Bass Boost

Rockford Fosgate Power T1000-1bd (New Black Box) OB Incomplete

(Open Box Incomplete Unit, Missing Face Plate Cover, Bass Knob)1000W RMS, Compact Class BD Monoblock Car Amplifier (2009-2010 Edition)

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Rockford Fosgate Power T1000-1bd (New Black Box) OB Incomplete

(Open Box Incomplete Unit, Missing Face Plate Cover, Bass Knob)1000W RMS, Compact Class BD Monoblock Car Amplifier (2009-2010 Edition)

Compact Class DB Monoblock Car Amplifier • 350W x 1 Chan. @ 4 Ohm • 650W x 1 Chan. @ 2 Ohm • 1000W x 1 Chan. @ 1 Ohm • Discrete Surface Mount Components • MEHSA MOSFET Power Supply • Utilizes TO-247 MOSFETs •

Compact Class DB Monoblock Car Amplifier • 350W x 1 Chan. @ 4 Ohm • 650W x 1 Chan. @ 2 Ohm • 1000W x 1 Chan. @ 1 Ohm • Discrete Surface Mount Components • MEHSA MOSFET Power Supply • Utilizes TO-247 MOSFETs •

Power Acoustik RZ1-1500D

1500W Peak (900W RMS) Class D RAZOR Series Monoblock Car Amplifier (with Bass Remote)

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Power Acoustik RZ1-1500D

1500W Peak (900W RMS) Class D RAZOR Series Monoblock Car Amplifier (with Bass Remote)

• 600 watts x 1 channel @ 4 ohm
• 900 watts x 1 channel @ 2 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable Monoblock Amplifier

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• 600 watts x 1 channel @ 4 ohm
• 900 watts x 1 channel @ 2 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable Monoblock Amplifier

EXCLUSIVE

MTX Thunder Elite Amplifier + Amp Kit Combo

Monoblock Class D Thunder Elite Amplifier + 4 AWG Amp Kit + Interconnect Cable + Sound Dampening

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MTX Thunder Elite Amplifier + Amp Kit Combo

Monoblock Class D Thunder Elite Amplifier + 4 AWG Amp Kit + Interconnect Cable + Sound Dampening

MTX TE801D Monoblock Class D Thunder Elite Amplifier + StreetWires ZN5K-04 ZN5 Series 4 AWG Amplifier Installation Kit + StreetWires ZN9250 ZN9 Series 2-Channel Interconnect Cable + Ballistic SSTKT Sound Dampening Trunk Kit Sonic Exclusive Combo

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MTX TE801D Monoblock Class D Thunder Elite Amplifier + StreetWires ZN5K-04 ZN5 Series 4 AWG Amplifier Installation Kit + StreetWires ZN9250 ZN9 Series 2-Channel Interconnect Cable + Ballistic SSTKT Sound Dampening Trunk Kit Sonic Exclusive Combo

Boss OL4KD R/B

Refurbished 4000W Max, Class D Monoblock Outlaw Series Amplifier

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Boss OL4KD R/B

Refurbished 4000W Max, Class D Monoblock Outlaw Series Amplifier

Boss Outlaw Monoblock Class D Car Amplifier • 1550W x 1 Chan. @ 4 ohm • 2800W x 1 Chan. @ 2 ohm • 4000W x 1 Chan. @ 1 ohm • Wired Remote Bass • Preamp RCA Outputs • Tuned Bass EQ • LED Indicators • Subsonic Filter

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Boss Outlaw Monoblock Class D Car Amplifier • 1550W x 1 Chan. @ 4 ohm • 2800W x 1 Chan. @ 2 ohm • 4000W x 1 Chan. @ 1 ohm • Wired Remote Bass • Preamp RCA Outputs • Tuned Bass EQ • LED Indicators • Subsonic Filter

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    FAQ Frequently asked questions in Discontinued Class-D Amplifiers

    Class D Amplifiers Frequently Asked Questions (FAQ)
    Class D amplifiers are a type of switching amplifier known for their high efficiency and compact size. Unlike traditional Class A, B, and AB amplifiers that use continuous analog voltage to amplify audio signals, Class D amplifiers employ a digital switching technique. This process rapidly switches the output transistors on and off, effectively turning them into binary switches that deliver the audio signal to the speaker. The switching nature of Class D amplifiers drastically reduces power wastage, resulting in higher efficiency and less heat production. As a result, Class D amplifiers are ideal for applications with limited space or power constraints, making them popular in car audio, home theater systems, and portable devices.
    Yes, modern Class D amplifiers have made significant advancements in audio fidelity and can deliver high-quality sound performance. While traditional audiophiles may have associated Class D with lower audio quality due to early models' limitations, today's Class D amplifiers have overcome many of these challenges. With advancements in switching technology, filtering, and feedback mechanisms, Class D amplifiers can now offer exceptional audio reproduction that rivals traditional Class AB amplifiers. Additionally, Class D amplifiers' efficiency and lower heat generation make them well-suited for high-power audio applications where traditional amplifiers would be impractical.
    Yes, Class D amplifiers are versatile and can power various speaker types, including subwoofers, woofers, mid-range, and tweeters. When selecting a Class D amplifier for your speakers, consider the power output (wattage) and impedance rating. Ensure that the amplifier's power rating matches or slightly exceeds your speakers' power handling capabilities to prevent underpowering or overpowering, which can lead to distortion or speaker damage. Additionally, check the amplifier's impedance range to ensure compatibility with your speakers' impedance. Most Class D amplifiers can handle both 4-ohm and 2-ohm loads, making them suitable for a wide range of speaker configurations.
    No, Class D amplifiers are known for their high efficiency, which results in significantly less heat generation compared to other amplifier classes like Class A or Class AB. The digital switching technique used in Class D amplifiers reduces power loss, resulting in a more efficient conversion of electrical energy into audio output. As a result, Class D amplifiers remain relatively cool even at high volume levels, making them suitable for space-constrained installations and applications where heat dissipation is a concern. Their cool operation also extends the lifespan of internal components and reduces the need for large heat sinks or fans.
    Yes, many Class D amplifiers support bridge mode, allowing you to increase the power output when driving a single speaker or subwoofer. In bridge mode, the amplifier combines the power output from two channels into a single channel, effectively doubling the power delivered to the speaker. However, it's essential to follow the manufacturer's guidelines and ensure that your amplifier supports bridging. Additionally, pay attention to the speaker's impedance requirements, as bridging may change the amplifier's impedance capabilities. If you're unsure or need assistance with bridging your Class D amplifier, contact Sonic Electronix's knowledgeable staff, who can help you find the right amplifier and configuration for your audio setup. With their compact size, high efficiency, and versatility, Class D amplifiers offer a compelling solution for various audio applications, delivering powerful and clear sound performance with minimal heat output.
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