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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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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 (60)
Zeus Series (53)
X Series (38)
Prime Series (28)
V Series (28)
CX Series (27)
XDM Series (26)
N Series (24)
SALT Series (24)
RD Series (22)
SFB Series (22)
HD Series (21)
JAD Series (19)
Kappa Series (19)
KX Series (17)
JD Series (16)
MD Series (16)
S Series (16)
XD-v2 Series (16)
ONYX Series (14)
Phantom Series (14)
Picasso-Nano Series (14)
Reference Series (14)
V Power Series (14)
VXi Series (14)
Brutus X 14 Series (13)
Marine V Series (13)
Razor Series (13)
GM Digital Series (12)
Machete Series (12)
N-Series (12)
Slash v3 Series (12)
Apocalypse Series (11)
BAMF Series (11)
HCP Series (11)
Mt. Olympus Series (11)
Tarantula Series (11)
Bass Series (10)
Black Ice Series (10)
iON Series (10)
JX Series (10)
SAEv4 Series (10)
Venezia Series (10)
PDX Series (9)
PowerZone Series (9)
SixFive Series (9)
BB Series (8)
GFX Series (8)
GS Series (8)
GTO Series (8)
HED Series (8)
MOJO Pro Series (8)
Power Pack Series (8)
Power Reference (8)
Stealth Series (8)
Alpha Series (7)
Consumer Line Series (7)
DS Series (7)
DX Series (7)
Mean Machine Series (7)
Mille Power Series (7)
MSA Series (7)
Nano Edge Series (7)
PowerZone 2 Series (7)
R-Series (7)
Reaper Series (7)
Stadium Series (7)
Torque Series (7)
XD Series (7)
Anarchy Series (6)
Big Bang Series (6)
Club Series (6)
COLOSSUS Series (6)
DPower Series (6)
Edge Series (6)
Evolution Series (6)
eXcelon Series (6)
GM Series (6)
MOFO Series (6)
Overdrive Series (6)
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SK Series (5)
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Trax Micro Series (5)
XQ Series (5)
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Atom Series (4)
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Compact Mean Machine Series (3)
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JackHammer Series (3)
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Reference MYKRO Series (3)
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ZTX Series (1)
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.

Power Acoustik MSA4‐1300D

Marine Grade 4-Channel Amplifier

MSA4‐1300D big DISCONTINUED
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Power Acoustik MSA4‐1300D

Marine Grade 4-Channel Amplifier

• Compact 4.75" Chassis
• Splash Resistant Circuit Boards
• High Level Input w/ Signal Sense Auto Turn-on
• Class D Amplifier

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• Compact 4.75" Chassis
• Splash Resistant Circuit Boards
• High Level Input w/ Signal Sense Auto Turn-on
• Class D Amplifier

Soundstream PN5.640D

640W 5-Channel Picasso Nano Class-D Amplifier

PN5.640D big DISCONTINUED
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Soundstream PN5.640D

640W 5-Channel Picasso Nano Class-D Amplifier

• RMS Power: 60 watts x 4 chan. + 200 watts @ 4 ohm, 80 watts x 4 chan. + 350 watts @ 2 ohm, 160 x 2 chan. + 350 watts @ 4 ohm Bridged
• Total Peak Power: 640W
• Dash Mount Remote Bass Level Control Included
• Dimensions: 4.75"W x 10.3"L x 2"H

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• RMS Power: 60 watts x 4 chan. + 200 watts @ 4 ohm, 80 watts x 4 chan. + 350 watts @ 2 ohm, 160 x 2 chan. + 350 watts @ 4 ohm Bridged
• Total Peak Power: 640W
• Dash Mount Remote Bass Level Control Included
• Dimensions: 4.75"W x 10.3"L x 2"H

NVX VADM4-Open Box(Very Good, Used)

400W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier

VADM4v2 big DISCONTINUED
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NVX VADM4-Open Box(Very Good, Used)

400W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier

• 400 Watt True RMS Output!
• Marine Certified 4-Channel Micro Class D Amplifier
• 75W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/2 Channel Operation
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint!

• 400 Watt True RMS Output!
• Marine Certified 4-Channel Micro Class D Amplifier
• 75W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/2 Channel Operation
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint!

Kenwood KAC-9105D

900W RMS Class D Monoblock Performance Series Amplifier

KAC-9105D big DISCONTINUED
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Kenwood KAC-9105D

900W RMS Class D Monoblock Performance Series Amplifier

• RMS: 500 x 1 @ 4 ohm, 900W x 1 @ 2 ohm, >900W x 1 @ 1 ohm
• Total Peak Power: 1800W
• CEA-2006 Compliant
• Bass Boost: 0 - 18 dB at 40 Hz
• Class D Circuitry
• Dimensions: 13-3/4"L x 2-5/16"H x 9-3/8"D

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• RMS: 500 x 1 @ 4 ohm, 900W x 1 @ 2 ohm, >900W x 1 @ 1 ohm
• Total Peak Power: 1800W
• CEA-2006 Compliant
• Bass Boost: 0 - 18 dB at 40 Hz
• Class D Circuitry
• Dimensions: 13-3/4"L x 2-5/16"H x 9-3/8"D

Massive Audio D8000 + Free $100 Gift Card

8000W Max Monoblock Amplifier

D 8000, 100EGIFT big DISCONTINUED
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Massive Audio D8000 + Free $100 Gift Card

8000W Max Monoblock Amplifier

• RMS: 950W x 1 @ 4 ohm, 1500W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm, 4000W x 1 @ 0.5 ohm
• Total Peak Power: 8000W
• CEA-2006 Compliant
• Bass Boost: 0-12 dB
• Class D Circuitry
• Dimensions: 19-15/16"L x 6-1/2"W x 2-1/8"H

7

• RMS: 950W x 1 @ 4 ohm, 1500W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm, 4000W x 1 @ 0.5 ohm
• Total Peak Power: 8000W
• CEA-2006 Compliant
• Bass Boost: 0-12 dB
• Class D Circuitry
• Dimensions: 19-15/16"L x 6-1/2"W x 2-1/8"H

Kicker ZX750.1 (11ZX750.1)

750W RMS Class D Monoblock ZX Series Amplifier

11ZX750.1 big DISCONTINUED
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Kicker ZX750.1 (11ZX750.1)

750W RMS Class D Monoblock ZX Series Amplifier

• RMS: 375W x 1 @ 4 ohm, 750W x 1 @ 2 ohm
• Total RMS Power: 750W
• CEA-2006 Compliant
• Bass Boost: 0-18 dB at 40 Hz
• Optional Vinyl Skins For Personalization
• Dimensions: 14-11/16"L x 9-5/8"W x 2-1/8"H

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• RMS: 375W x 1 @ 4 ohm, 750W x 1 @ 2 ohm
• Total RMS Power: 750W
• CEA-2006 Compliant
• Bass Boost: 0-18 dB at 40 Hz
• Optional Vinyl Skins For Personalization
• Dimensions: 14-11/16"L x 9-5/8"W x 2-1/8"H

Alpine PDX-F6 Open Box, Accepatble Condition (Used)

600W PDX Series 4-Channel Power Density Digital Class D Car Amplifier(Open Box Complete Used Functional)

PDX-F6 big DISCONTINUED
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Alpine PDX-F6 Open Box, Accepatble Condition (Used)

600W PDX Series 4-Channel Power Density Digital Class D Car Amplifier(Open Box Complete Used Functional)

• Item Condition: Open Box
• RMS Power: 150W x 4-Chan. @ 4 ohm
• 600 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

• Item Condition: Open Box
• RMS Power: 150W x 4-Chan. @ 4 ohm
• 600 Watts RMS
• Class D
• Variable High-Pass and Low-Pass Filter
• Blue LED Power/Status Indicator
• Compact Size

Kenwood KAC-9104D

1800W Max, Class D Monoblock Amplifier

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Kenwood KAC-9104D

1800W Max, Class D Monoblock Amplifier

Class D Monoblock Car Amplifier • 500W x 1 chan. @ 4 ohm • 900W x 1 chan. @ 2 ohm • >900W x 1 chan. @ 1 ohm • 1800W x 1 chan. Max • Stackable operation capable • Speaker-level inputs • Preamp RCA outputs • Built-in cooling fan

85

Class D Monoblock Car Amplifier • 500W x 1 chan. @ 4 ohm • 900W x 1 chan. @ 2 ohm • >900W x 1 chan. @ 1 ohm • 1800W x 1 chan. Max • Stackable operation capable • Speaker-level inputs • Preamp RCA outputs • Built-in cooling fan

Phoenix Gold SX2 1200.6 (SX212006)

1200W 6 Channel System Amplifier

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Phoenix Gold SX2 1200.6 (SX212006)

1200W 6 Channel System Amplifier

• 1200W RMS 6 Channel Amplifier
• Variable phase output
• Strappable
• Remote bass and phase controller with Bass Shift® (RBPC)
• Switchable balanced or unbalanced inputs
• Power/Ground Wire Size: 4GA
• Tri-light LED amplifier status indicators

• 1200W RMS 6 Channel Amplifier
• Variable phase output
• Strappable
• Remote bass and phase controller with Bass Shift® (RBPC)
• Switchable balanced or unbalanced inputs
• Power/Ground Wire Size: 4GA
• Tri-light LED amplifier status indicators

Hifonics Brutus BRX1600.1D

1600W RMS Class NextGen Super-D Monoblock Brutus Series Amplifier

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Hifonics Brutus BRX1600.1D

1600W RMS Class NextGen Super-D Monoblock Brutus Series Amplifier

• RMS: 600W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1600W x 1 @ 1 ohm
• Total RMS Power: 1600W
• CEA-2006 Compliant
• Bass Boost: 0-10 dB at 40 Hz
• Aluminum Alloy Heatsink with Illuminated Hifonics Logo
• Dimensions: 15-15/16"L x 10-5/16"W x 2-1/2"H

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• RMS: 600W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 1600W x 1 @ 1 ohm
• Total RMS Power: 1600W
• CEA-2006 Compliant
• Bass Boost: 0-10 dB at 40 Hz
• Aluminum Alloy Heatsink with Illuminated Hifonics Logo
• Dimensions: 15-15/16"L x 10-5/16"W x 2-1/2"H

Soundstream ST4.1000D

1,000W Max (250W RMS) Stealth Series Class-D 4-Channel 2-Ohm Stable Amplifier

ST4.1000D big DISCONTINUED
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Soundstream ST4.1000D

1,000W Max (250W RMS) Stealth Series Class-D 4-Channel 2-Ohm Stable Amplifier

• 4 ohm: 900 watts x 4 chan.
• 2 ohm: 125 watts x 4 chan.
• Bridged, 4 ohm: 250 watts x 2 chan.
• Total Peak Power: 1000 Watts
• Compact Design Allows for Installation Anywhere
• Aluminum Heatsink
• 3" W x 6" L x 1.5" H

• 4 ohm: 900 watts x 4 chan.
• 2 ohm: 125 watts x 4 chan.
• Bridged, 4 ohm: 250 watts x 2 chan.
• Total Peak Power: 1000 Watts
• Compact Design Allows for Installation Anywhere
• Aluminum Heatsink
• 3" W x 6" L x 1.5" H

Hifonics Brutus BRZ1700.1D

1700W RMS Brutus Series 1-Channel Monoblock Super Class D Amplifier (BRZ 1700.1D)

BRZ1700.1D big DISCONTINUED
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Hifonics Brutus BRZ1700.1D

1700W RMS Brutus Series 1-Channel Monoblock Super Class D Amplifier (BRZ 1700.1D)

• 1700W x 1-Chan. @ 1 Ohm
• 1200W x 1-Chan. @ 2 Ohm
• 600W x 1-Chan. @ 4 Ohm
• Wired HFR-3 Remote
• 4-Way System Protection
• Phase Shift
• Silver-Plated RCA Inputs

161

• 1700W x 1-Chan. @ 1 Ohm
• 1200W x 1-Chan. @ 2 Ohm
• 600W x 1-Chan. @ 4 Ohm
• Wired HFR-3 Remote
• 4-Way System Protection
• Phase Shift
• Silver-Plated RCA Inputs

Precision Power PPI P1000.1

1000W RMS Phantom Series Class D Full Range Monoblock Amplifier

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Precision Power PPI P1000.1

1000W RMS Phantom Series Class D Full Range Monoblock Amplifier

• RMS: 580W x 1 @ 4 ohm, 725W x 1 @ 2 ohm 1000W x 1 @ 1 ohm
• Total RMS Power: 1000W
• Wired Bass Remote Included
• Bass Boost: 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 12-15/16" L x 6-3/4" W x 2" H

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• RMS: 580W x 1 @ 4 ohm, 725W x 1 @ 2 ohm 1000W x 1 @ 1 ohm
• Total RMS Power: 1000W
• Wired Bass Remote Included
• Bass Boost: 0-12 dB
• 1 Pair of Preamp Outputs
• Dimensions: 12-15/16" L x 6-3/4" W x 2" H

Power Acoustik BAMF-5500/1D (BAMF55001/D)

5500W Max Class D Monoblock BAMF Series Amplifier

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Power Acoustik BAMF-5500/1D (BAMF55001/D)

5500W Max Class D Monoblock BAMF Series Amplifier

• RMS: 1700W x 1 @ 4 ohm, 2300W x 1 @ 2 ohm, 3200W x 1 chan @ 1 ohm
• Total Peak Power: 5500W
• Class D Circuitry
• Bass Boost: 0-18 dB
• 1 Pair of Preamp Outputs
• Dimensions: 16-7/8"L x 8-1/4"W x 2-1/8"H

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• RMS: 1700W x 1 @ 4 ohm, 2300W x 1 @ 2 ohm, 3200W x 1 chan @ 1 ohm
• Total Peak Power: 5500W
• Class D Circuitry
• Bass Boost: 0-18 dB
• 1 Pair of Preamp Outputs
• Dimensions: 16-7/8"L x 8-1/4"W x 2-1/8"H

EXCLUSIVE

Hifonics HFi1500D

1500 Watt RMS Class D Monoblock HFi Series 1-Ohm Stable Subwoofer Amplifier (HFi 1500D)

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Hifonics HFi1500D

1500 Watt RMS Class D Monoblock HFi Series 1-Ohm Stable Subwoofer Amplifier (HFi 1500D)

• 4 ohm: 500 watts x 1 chan.
• 2 ohm: 1000 watts x 1 chan.
• 1 ohm: 1500 watts x 1 chan.
• 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.
• 2 ohm: 1000 watts x 1 chan.
• 1 ohm: 1500 watts x 1 chan.
• 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

Soundstream PN1.1000D

1000W Monoblock Picasso Nano Series Class D Amplifier

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Soundstream PN1.1000D

1000W Monoblock Picasso Nano Series Class D Amplifier

• RMS: 350W x 1 @ 4 ohm, 600Wx 1 @ 2 ohm
• Total Power: 1000W
• Pulse Width Modulated MOSFET power supply
• 4.75 W x 10.25 L x 1.50 H

5

• RMS: 350W x 1 @ 4 ohm, 600Wx 1 @ 2 ohm
• Total Power: 1000W
• Pulse Width Modulated MOSFET power supply
• 4.75 W x 10.25 L x 1.50 H

Cerwin-Vega B4 Open Box Complete

600W Bomber Series 4-Channel Class D Digital Amplifier

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Cerwin-Vega B4 Open Box Complete

600W Bomber Series 4-Channel Class D Digital Amplifier

• Item Condition: Open Box Complete
• RMS Power: 80W x 4 @ 4 ohm, 150W x 4 @ 2 ohm
• Dual Zone , operate two separate devices to two separate stages (front vs rear)
• Ultra Compact High Density Aluminium Alloy Chassis
• Direct FET Power Mosfet Output Stage
• Dimensions: 4.02"W x 8.7"L x 1.4"H

• Item Condition: Open Box Complete
• RMS Power: 80W x 4 @ 4 ohm, 150W x 4 @ 2 ohm
• Dual Zone , operate two separate devices to two separate stages (front vs rear)
• Ultra Compact High Density Aluminium Alloy Chassis
• Direct FET Power Mosfet Output Stage
• Dimensions: 4.02"W x 8.7"L x 1.4"H

Kicker DX300.2 (11DX300.2)

300W RMS 2-Channel DX Series Amplifier (DX3002)

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Kicker DX300.2 (11DX300.2)

300W RMS 2-Channel DX Series Amplifier (DX3002)

• DX Series 2-Channel Class D Car Amplifier
• 150 Watts x 2-Channel @ 2 Ohm
• 75 Watts x 2-Channel @ 4 Ohm
• 300 Watts x 1-Channel @ 4 Ohm
• Muting Circuit
• 3 Automatic Turn-On Modes
• Balanced Differential Inputs

3

• DX Series 2-Channel Class D Car Amplifier
• 150 Watts x 2-Channel @ 2 Ohm
• 75 Watts x 2-Channel @ 4 Ohm
• 300 Watts x 1-Channel @ 4 Ohm
• Muting Circuit
• 3 Automatic Turn-On Modes
• Balanced Differential Inputs

Hifonics Atlas

3000W RMS 1-Channel Monoblock Mt. Olympus Series Class D Amplifier

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Hifonics Atlas

3000W RMS 1-Channel Monoblock Mt. Olympus Series Class D Amplifier

• RMS: 1200W x 1 @ 4 ohm, 2100W x 1 @ 2 ohm, 3000W x 1 @ 1 ohm
• Total RMS Power: 3000W
• Class D Circuitry
• Bass Boost: 0-10 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9"W x 21-3/4"L x 2-3/4"H

5

• RMS: 1200W x 1 @ 4 ohm, 2100W x 1 @ 2 ohm, 3000W x 1 @ 1 ohm
• Total RMS Power: 3000W
• Class D Circuitry
• Bass Boost: 0-10 dB
• 1 Pair of Preamp Outputs
• Dimensions: 9"W x 21-3/4"L x 2-3/4"H

Alpine MRP-M1000

1000W RMS, Class D Monoblock Amplifier

MRP-M1000 big DISCONTINUED
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Alpine MRP-M1000

1000W RMS, Class D Monoblock Amplifier

V-Power Series Class D Monoblock Car Amplifier • 600W x 1 chan. @ 4 ohm • 1000W x 1 chan. @ 2 ohm • 2000W x 1 chan. Max approx. • MOSFET Power supply • Bass EQ 0-12dB at 50Hz • Continuously adjustable gain control • Thermal management control

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V-Power Series Class D Monoblock Car Amplifier • 600W x 1 chan. @ 4 ohm • 1000W x 1 chan. @ 2 ohm • 2000W x 1 chan. Max approx. • MOSFET Power supply • Bass EQ 0-12dB at 50Hz • Continuously adjustable gain control • Thermal management control

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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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