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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.
V Series (26)
SALT Series (24)
X Series (24)
XDM Series (24)
Prime Series (23)
RD Series (22)
SFB Series (22)
Brutus Series (21)
Zeus Series (18)
JD Series (17)
N Series (17)
HD Series (15)
JAD Series (14)
CX Series (13)
VXi Series (13)
S Series (12)
Machete Series (10)
SAEv4 Series (10)
V Power Series (10)
Venezia Series (10)
Slash v3 Series (9)
Brutus X 14 Series (8)
GM Digital Series (8)
HCP Series (8)
Marine V Series (8)
N-Series (8)
Power Pack Series (8)
PowerZone Series (8)
Kappa Series (7)
R-Series (7)
GS Series (6)
GTO Series (6)
Mt. Olympus Series (6)
Reference Series (6)
XD-v2 Series (6)
AXL Series (5)
BB Series (5)
DPower Series (5)
GM Series (5)
Mille Power Series (5)
MSA Series (5)
Power One Series (5)
Apocalypse Atom Pro Series (4)
DSP Series (4)
KX Series (4)
ONYX Series (4)
PDX Series (4)
SPL Show Series (4)
XC-Series (4)
Anarchy Series (3)
BAMF Series (3)
BD Series (3)
BX Series (3)
Club Series (3)
Consumer Line Series (3)
Evolution Series (3)
eXcelon Series (3)
iON Series (3)
JX Series (3)
MX Series (3)
Phantom Series (3)
SAE Series (3)
SPL (3)
VFL Series (3)
XQ Series (3)
Alpha Series (2)
APMI Series (2)
DS Series (2)
HMS Series (2)
KXM Series (2)
MOJO Pro Series (2)
MVi Series (2)
Nano Edge Series (2)
Opti Drive Series (2)
Performance Series (2)
Prime R2 Series (2)
Reaper Series (2)
Status Series (2)
Street Edge Series (2)
Stroker Pro Series (2)
Tarantula Series (2)
The Epicenter Series (2)
Thunder Series (2)
WCC Series (2)
Apocalypse Sport Series (1)
Big Bang Series (1)
Black Ice Series (1)
Bomber Series (1)
Brutus BG Series (1)
Champion Series (1)
Chaos EXXtreme Series (1)
COLOSSUS Series (1)
CompVT Series (1)
Crypt Series (1)
D Series (1)
DX Series (1)
Edge Series (1)
Formula Series (1)
Gen-X (1)
Ground Pounder Series (1)
HED Series (1)
HX Series (1)
Kappa Perfect Series (1)
Low Profile Series (1)
MD Series (1)
Mean Machine Series (1)
Overdrive Series (1)
Power Reference (1)
Primo Series (1)
Punch BR Series (1)
Punch Series (1)
Razor Series (1)
Salt Water Series (1)
SIA Series (1)
SixFive Series (1)
Smart Series (1)
Stealth Bomber Series (1)
TS Series (1)
USX Series (1)
WET 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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Condition
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You are currently viewing discontinued products.

Cerwin-Vega B4 Open Box Complete

600W Bomber Series 4-Channel Class D Digital Amplifier

B4 big DISCONTINUED
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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

Hifonics ZRX1216.1D Open Box Complete (Very Good, Used)

1200 Watt Monoblock Zeus Series Class D 1-Ohm Stable Subwoofer Amplifier - (Zeus 1200 Watt)

ZRX1216.1D big DISCONTINUED
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Hifonics ZRX1216.1D Open Box Complete (Very Good, Used)

1200 Watt Monoblock Zeus Series Class D 1-Ohm Stable Subwoofer Amplifier - (Zeus 1200 Watt)

• Item Condition: Open Box
• Max Power: 400W x 1 @ 4 ohm, 600W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total Peak Power: 1200W
• Variable Low Pass Filter
• Dimensions: 10" W x 12.6" L x 2.4" H

• Item Condition: Open Box
• Max Power: 400W x 1 @ 4 ohm, 600W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total Peak Power: 1200W
• Variable Low Pass Filter
• Dimensions: 10" W x 12.6" L x 2.4" H

Hifonics HFi1500D Open Box Complete (Very Good, Used)

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

HFi1500D big DISCONTINUED
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Hifonics HFi1500D Open Box Complete (Very Good, Used)

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

• Item Condition: Open Box
• 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

• Item Condition: Open Box
• 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

Power Acoustik RZ4-2000D Open Box Complete (Very Good, Used)

2000W 4-Channel RAZOR Series Full Range Class D Car Amplifier

RZ4-2000D big DISCONTINUED
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Power Acoustik RZ4-2000D Open Box Complete (Very Good, Used)

2000W 4-Channel RAZOR Series Full Range Class D Car Amplifier

• Item Condition: Open Box
• 4 ohm: 160 watts x 4-Chan.
• 2 ohm: 250 watts x 4-Chan.
• Bridged, 4 ohm: 500 x 2 chan.
• Max power output: 2000 watts
• 80Hz HP Crossover @ 12dB
• 80Hz LP Crossover @ 12dB

• Item Condition: Open Box
• 4 ohm: 160 watts x 4-Chan.
• 2 ohm: 250 watts x 4-Chan.
• Bridged, 4 ohm: 500 x 2 chan.
• Max power output: 2000 watts
• 80Hz HP Crossover @ 12dB
• 80Hz LP Crossover @ 12dB

NVX MVPA1 - Open Box, Acceptable Condition (Used)

Micro-V Series 300W RMS Monoblock Class D Compact Car Amplifier (MVPA.1)(Open Box Complete Used Functional)

MVPA1 big DISCONTINUED
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NVX MVPA1 - Open Box, Acceptable Condition (Used)

Micro-V Series 300W RMS Monoblock Class D Compact Car Amplifier (MVPA.1)(Open Box Complete Used Functional)

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

• FEATURE 1
• FEATURE 2
• FEATURE 3
• FEATURE 4
• FEATURE 5
• FEATURE 6
• FEATURE 7

Sound Storm Labs (SSL) EV3000D [Refurbished]

3000W Max Evolution Series Class D Monoblock Amplifier with Bass Remote

EV3000D big DISCONTINUED
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Sound Storm Labs (SSL) EV3000D [Refurbished]

3000W Max Evolution Series Class D Monoblock Amplifier with Bass Remote

• 563 Watts RMS x 1 @ 4 ohm
• 1125 Watts RMS x 1 @ 2 ohm
• 2250 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 3000 Watts
• Variable Bass Boost: 0 to +18 dB bass boost at 50 Hz
• Large aluminum heatsink for excellent heat dissipation
• 12.688"L x 10"W x 2.3"H

• 563 Watts RMS x 1 @ 4 ohm
• 1125 Watts RMS x 1 @ 2 ohm
• 2250 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 3000 Watts
• Variable Bass Boost: 0 to +18 dB bass boost at 50 Hz
• Large aluminum heatsink for excellent heat dissipation
• 12.688"L x 10"W x 2.3"H

NVX MVPA4 (Factory Refurbished)

Micro-V Series 400W RMS 4-Channel Bridgeable Micro Class D Compact Car Amplifier (MVPA.4)

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NVX MVPA4 (Factory Refurbished)

Micro-V Series 400W RMS 4-Channel Bridgeable Micro Class D Compact Car Amplifier (MVPA.4)

• The size of a postcard with 400 Watts True RMS Output!
• • MVP Series 4-Channel Micro Class D Amplifier
• 50W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint!

• The size of a postcard with 400 Watts True RMS Output!
• • MVP Series 4-Channel Micro Class D Amplifier
• 50W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint!

Kicker DX250.1 (11DX250.1) - Factory Refurbished

250W RMS, Monoblock Class D DX Series Amplifier

11DX250.1 big DISCONTINUED
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Kicker DX250.1 (11DX250.1) - Factory Refurbished

250W RMS, Monoblock Class D DX Series Amplifier

• RMS: 140W x 1 @ 4 ohm, 250W x 1 @ 2 ohm
• Total RMS Power: 250W
• CEA-2006 Compliant
• Bass Boost 0-12 dB
• Balanced Differential Inputs for Noise Elimination
• Dimensions: 10-1/4"L x 8-5/16"W x 2-1/4"H

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• RMS: 140W x 1 @ 4 ohm, 250W x 1 @ 2 ohm
• Total RMS Power: 250W
• CEA-2006 Compliant
• Bass Boost 0-12 dB
• Balanced Differential Inputs for Noise Elimination
• Dimensions: 10-1/4"L x 8-5/16"W x 2-1/4"H

EXCLUSIVE

Hifonics Brutus BRX2400.1D [Open Box, Like New, Complete]

2400 Watt RMS Brutus Series NextGen Class D Monoblock 1-Ohm Stable Subwoofer Amplifier - (Brutus 2400 Watt)

sonic electronix certified amplifier logo

The Hifonics Brutus BRX2400.1D is tested & true to its power output!

BRX2400.1D big DISCONTINUED
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Hifonics Brutus BRX2400.1D [Open Box, Like New, Complete]

2400 Watt RMS Brutus Series NextGen Class D Monoblock 1-Ohm Stable Subwoofer Amplifier - (Brutus 2400 Watt)

• RMS: 850W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 2400W x 1 @ 1 ohm
• Total RMS Power: 2400W
• CEA-2006 Compliant
• Bass Boost: 0-10 dB at 45 Hz
• Aluminum Alloy Heatsink with Illuminated Hifonics Logo
• Dimensions: 18-11/16"L x 10-5/16"W x 2-1/2"H

Promo Savings Icon
sonic electronix certified amplifier logo

The Hifonics Brutus BRX2400.1D is tested & true to its power output!

• RMS: 850W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 2400W x 1 @ 1 ohm
• Total RMS Power: 2400W
• CEA-2006 Compliant
• Bass Boost: 0-10 dB at 45 Hz
• Aluminum Alloy Heatsink with Illuminated Hifonics Logo
• Dimensions: 18-11/16"L x 10-5/16"W x 2-1/2"H

NVX JAD800.4 (OPEN BOX, LIKE NEW)

True 1600 Watt Peak 800W RMS, Full Range Class D 4-Channel Amplifier (JAD-800.4)

JAD800.4 big DISCONTINUED
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NVX JAD800.4 (OPEN BOX, LIKE NEW)

True 1600 Watt Peak 800W RMS, Full Range Class D 4-Channel Amplifier (JAD-800.4)

• 4 ohm: 125 watts x 4-Chan. RMS
• 2 ohm: 200 watts x 4-Chan. RMS
• Bridged, 4 ohm: 400 x 2 chan. RMS
• Pulse Width Modulated MOSFET Power Supply
• 4/3/2 Channel Operation

• 4 ohm: 125 watts x 4-Chan. RMS
• 2 ohm: 200 watts x 4-Chan. RMS
• Bridged, 4 ohm: 400 x 2 chan. RMS
• Pulse Width Modulated MOSFET Power Supply
• 4/3/2 Channel Operation

NVX MVPA1 Open Box

Micro-V Series 300W RMS Monoblock Class D Compact Car Amplifier (MVPA.1)

MVPA1 big DISCONTINUED
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NVX MVPA1 Open Box

Micro-V Series 300W RMS Monoblock Class D Compact Car Amplifier (MVPA.1)

• Incredibly Tiny! The size of a postcard!
• RMS: 200 x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• Total RMS Power: 300W
• CEA-2006 Compliant
• Switchable Bass Boost: (0dB/+6dB/+12dB)
• Extremely Small Footprint
• Dimensions: 4"W x 5-7/16"L x 1-9/16"H

• Incredibly Tiny! The size of a postcard!
• RMS: 200 x 1 @ 4 ohm, 300W x 1 @ 2 ohm
• Total RMS Power: 300W
• CEA-2006 Compliant
• Switchable Bass Boost: (0dB/+6dB/+12dB)
• Extremely Small Footprint
• Dimensions: 4"W x 5-7/16"L x 1-9/16"H

Hifonics HFi1000.1D Open Box Complete (Very Good, Used)

1000 Watt RMS Class D Monoblock HFi Series 1-Ohm Stable Subwoofer Amplifier

HFi1000.1D big DISCONTINUED
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Hifonics HFi1000.1D Open Box Complete (Very Good, Used)

1000 Watt RMS Class D Monoblock HFi Series 1-Ohm Stable Subwoofer Amplifier

• Item Condition: Open Box
• 4 ohm: 475 watts x 1 chan.
• 2 ohm: 750 watts x 1 chan.
• 1 ohm: 1000 watts x 1 chan.
• 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

• Item Condition: Open Box
• 4 ohm: 475 watts x 1 chan.
• 2 ohm: 750 watts x 1 chan.
• 1 ohm: 1000 watts x 1 chan.
• 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

Belva BB2000Dv2 (BB2000D v2) LIKE NEW DAMAGED PACKAGING

2000W Max (1200W RMS) Class D Monoblock BB Series Version 2 Car Amplifier

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Belva BB2000Dv2 (BB2000D v2) LIKE NEW DAMAGED PACKAGING

2000W Max (1200W RMS) Class D Monoblock BB Series Version 2 Car Amplifier

• Like new Damaged Package
• RMS: 540W x 1 @ 4 ohm, 900W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total Peak Power: 2000W
• 1 Pair of Preamp Outputs
• Bass Boost 0-12 dB at 30 - 80 Hz
• Subsonic Filter From Off - 50 Hz
• Dimensions: 12-1/2"W x 8-1/4"D x 2-1/4"H

• Like new Damaged Package
• RMS: 540W x 1 @ 4 ohm, 900W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total Peak Power: 2000W
• 1 Pair of Preamp Outputs
• Bass Boost 0-12 dB at 30 - 80 Hz
• Subsonic Filter From Off - 50 Hz
• Dimensions: 12-1/2"W x 8-1/4"D x 2-1/4"H

NVX BDA7501 (Open Box, Very Good Condition Used)

True 750W RMS Monoblock Class D Amplifier Specifically made for BD Series

BDA7501 big DISCONTINUED
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NVX BDA7501 (Open Box, Very Good Condition Used)

True 750W RMS Monoblock Class D Amplifier Specifically made for BD Series

• Open Box Complete
• True RMS Power: 450W x 1 @ 4 ohm, 750W x 1 @ 2 ohm
• CEA-2006 Compliant
• Dimensions: 7" W x 9.75" L x 2" H

• Open Box Complete
• True RMS Power: 450W x 1 @ 4 ohm, 750W x 1 @ 2 ohm
• CEA-2006 Compliant
• Dimensions: 7" W x 9.75" L x 2" H

NVX JAD1200.1 Open Box Complete (Very Good, Used)

True 1200W RMS Class D Monoblock Amplifier with Bass Remote Included

JAD1200.1 big DISCONTINUED
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NVX JAD1200.1 Open Box Complete (Very Good, Used)

True 1200W RMS Class D Monoblock Amplifier with Bass Remote Included

• Item Condition: Open Box
• RMS: 500W x 1 @ 4 ohm, 800W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• Wired Bass Remote Included
• Ultra Efficient Class D Design
• Dimensions: 6-7/10"W x 12-8/10"L x 1-8/10"H

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• Item Condition: Open Box
• RMS: 500W x 1 @ 4 ohm, 800W x 1 @ 2 ohm, 1200W x 1 @ 1 ohm
• Total RMS Power: 1200W
• CEA-2006 Compliant
• Wired Bass Remote Included
• Ultra Efficient Class D Design
• Dimensions: 6-7/10"W x 12-8/10"L x 1-8/10"H

Precision Power P900.5, Open Box (Very Good, Used)

900W RMS, Phantom Series Class D Full Range 5-Channel Amplifier

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Precision Power P900.5, Open Box (Very Good, Used)

900W RMS, Phantom Series Class D Full Range 5-Channel Amplifier

• Item Condition - Very Good, Used
• 70W RMS x 4 Channels + 270W RMS x 1 channel @ 4 ohm
• Tri-Mode Capable
• 3-Way System Protection
• Variable Low-Pass Crossover
• Variable High-Pass Crossover
• Band-Pass Crossovers
• Input Source Selector

• Item Condition - Very Good, Used
• 70W RMS x 4 Channels + 270W RMS x 1 channel @ 4 ohm
• Tri-Mode Capable
• 3-Way System Protection
• Variable Low-Pass Crossover
• Variable High-Pass Crossover
• Band-Pass Crossovers
• Input Source Selector

Planet Audio ZR900.1 R/B

900W Max, Class D Monoblock Subwoofer Amplifier

ZR900.1-RB big DISCONTINUED
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Planet Audio ZR900.1 R/B

900W Max, Class D Monoblock Subwoofer Amplifier

Class D Monoblock Subwoofer Amplifier • 900W Max • 525 Watts x 1 Chan. @ 2 Ohm • 300 Watts x 1 Chan. @ 4 Ohm • 35 Nanosecond Rectifiers • Preamp RCA Outputs • Master/Slave Modes • 3-Way System Protection Circuitry

Class D Monoblock Subwoofer Amplifier • 900W Max • 525 Watts x 1 Chan. @ 2 Ohm • 300 Watts x 1 Chan. @ 4 Ohm • 35 Nanosecond Rectifiers • Preamp RCA Outputs • Master/Slave Modes • 3-Way System Protection Circuitry

AudioControl ACM4300 (Open Box, Complete)

300W RMS ACM Series 2 ohm Stable 4-Channel Class-D Amplifier

ACM-4.300 big DISCONTINUED
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AudioControl ACM4300 (Open Box, Complete)

300W RMS ACM Series 2 ohm Stable 4-Channel Class-D Amplifier

• 50 Watts RMS x 4 @ 4 ohm
• 175 Watts RMS x 2 @ 2 ohm
• 150 Watts RMS x 2 @ 4 ohm, Bridged
• Small Footprint for Flexible Mounting
• AccuBASS and GTO Signal Sense Built In
• Linkwitz-Riley Crossover
• Aluminum Heatsink
• Dimensions: 9.4" W x 3" L x 1.75" H

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• 50 Watts RMS x 4 @ 4 ohm
• 175 Watts RMS x 2 @ 2 ohm
• 150 Watts RMS x 2 @ 4 ohm, Bridged
• Small Footprint for Flexible Mounting
• AccuBASS and GTO Signal Sense Built In
• Linkwitz-Riley Crossover
• Aluminum Heatsink
• Dimensions: 9.4" W x 3" L x 1.75" H

Pioneer GM-D9605 - Open Box, Good Condition (Used)

2000W Max 5 Channel GM Digital Champion Series Class D Amplifier Open Box Complete (Good, Used)

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Pioneer GM-D9605 - Open Box, Good Condition (Used)

2000W Max 5 Channel GM Digital Champion Series Class D Amplifier Open Box Complete (Good, Used)

• RMS: 75 Watts x 4 + 350 Watts x 1 @ 4 ohm
•RMS: 100 Watts x 4 + 600 Watts x 1 @ 2 ohm
• 200 Watts RMS x 2 @ 4 ohm, Bridged
• Total Peak Power: 2000 Watts
• CEA-2006 Compliant
• CEA-2006 Compliant Amplifier
• Wired remote bass boost level control included
• Speaker-level (high-level) inputs

• RMS: 75 Watts x 4 + 350 Watts x 1 @ 4 ohm
•RMS: 100 Watts x 4 + 600 Watts x 1 @ 2 ohm
• 200 Watts RMS x 2 @ 4 ohm, Bridged
• Total Peak Power: 2000 Watts
• CEA-2006 Compliant
• CEA-2006 Compliant Amplifier
• Wired remote bass boost level control included
• Speaker-level (high-level) inputs

Rockford Fosgate Prime R500X1D

500W RMS Prime Series Class D Monoblock Amplifier (Open Box Complete)

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Rockford Fosgate Prime R500X1D

500W RMS Prime Series Class D Monoblock Amplifier (Open Box Complete)

• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• Remote PLC (Punch Level Control) Included
• Efficient Class-D circuit topology
• Dimensions: 8-1/2"L x 6-3/4"W x 2"H

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• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• Remote PLC (Punch Level Control) Included
• Efficient Class-D circuit topology
• Dimensions: 8-1/2"L x 6-3/4"W x 2"H

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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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