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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.
XDM Series (25)
SALT Series (24)
V Series (24)
X Series (24)
Prime Series (23)
RD Series (22)
SFB Series (22)
Brutus Series (21)
JD Series (18)
N Series (18)
Zeus Series (18)
HD Series (16)
JAD Series (15)
VXi Series (13)
CX Series (12)
S Series (12)
Machete Series (10)
N-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)
Power Pack Series (8)
PowerZone Series (8)
Kappa Series (7)
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Mt. Olympus Series (6)
Reference Series (6)
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DPower Series (5)
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ONYX Series (4)
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iON Series (3)
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SPL (3)
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Alpha Series (2)
APMI Series (2)
BD 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)
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Apocalypse Sport Series (1)
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Smart Series (1)
Stealth Bomber Series (1)
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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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Hifonics X2200.1D Open Box

2200W BRUTUS X-14 Series Class-D Monoblock 1-Channel Amplifier

X2200.1D big DISCONTINUED
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Hifonics X2200.1D Open Box

2200W BRUTUS X-14 Series Class-D Monoblock 1-Channel Amplifier

• RMS Power: 950W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 2200W x 1 @ 1 ohm
• Total Peak Power: 2200W
• Variable Low Pass Filter
• 13.39"W x 2.5"H x 9.49"L

• RMS Power: 950W x 1 @ 4 ohm, 1600W x 1 @ 2 ohm, 2200W x 1 @ 1 ohm
• Total Peak Power: 2200W
• Variable Low Pass Filter
• 13.39"W x 2.5"H x 9.49"L

Kenwood KAC-9106D Open Box Complete

1000W RMS Class D Monoblock Performance Series Car Amplifier

KAC-9106D big DISCONTINUED
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Kenwood KAC-9106D Open Box Complete

1000W RMS Class D Monoblock Performance Series Car Amplifier

  • Item Condition: Open Box complete
    • • RMS Power: 500W x 1 @ 4 ohm, 1000W x 1 @ 2 ohm
    • Total Peak Power: 2000W
    • CEA-2006 Compliant
    • Dimensions: 13-13/16"W x 7-9/16" D x 2-3/16"

  • Item Condition: Open Box complete
    • • RMS Power: 500W x 1 @ 4 ohm, 1000W x 1 @ 2 ohm
    • Total Peak Power: 2000W
    • CEA-2006 Compliant
    • Dimensions: 13-13/16"W x 7-9/16" D x 2-3/16"
    NVX - Worth the Envy - Direct to Consumer Car Audio

    SPL GRLA 5500/1D (GRLA5500/1D) R/B

    5500W Max, Gorilla Series Class D Digital Monoblock Amplifier

    GRLA5500/1D big DISCONTINUED
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    SPL GRLA 5500/1D (GRLA5500/1D) R/B

    5500W Max, Gorilla Series Class D Digital Monoblock Amplifier

    Gorilla Series Class D Digital Monoblock Car Amplifier • 1700 Watts x 1 Chan @ 4 Ohm • 2500 Watts x 1 Chan. @ 2 Ohm • 3200 Watts x 1 Chan @ 1 Ohm • Regulated MOSFET PMW Power Supply • Preamp RCA Outputs • Silver Texture

    Gorilla Series Class D Digital Monoblock Car Amplifier • 1700 Watts x 1 Chan @ 4 Ohm • 2500 Watts x 1 Chan. @ 2 Ohm • 3200 Watts x 1 Chan @ 1 Ohm • Regulated MOSFET PMW Power Supply • Preamp RCA Outputs • Silver Texture

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

    1000 Watt RMS Class D Monoblock HFi Series 1-Ohm Stable Subwoofer Amplifier Open Box Complete (Good, Used)

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

    1000 Watt RMS Class D Monoblock HFi Series 1-Ohm Stable Subwoofer Amplifier Open Box Complete (Good, Used)

    • 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

    • 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

    Hifonics GLX1400.1D (Factory Refurbished)

    1400W RMS Class D Monoblock Gladiator Series Amplifier

    GLX1400.1D big DISCONTINUED
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    Hifonics GLX1400.1D (Factory Refurbished)

    1400W RMS Class D Monoblock Gladiator Series Amplifier

    Gladiator Series Monoblock Class D Car Amplifier • 4 ohm: 500 watts x 1 chan. • 2 ohm: 1000 watts x 1 chan. • 1 ohm: 1400 watts x 1 chan.

    Gladiator Series Monoblock Class D Car Amplifier • 4 ohm: 500 watts x 1 chan. • 2 ohm: 1000 watts x 1 chan. • 1 ohm: 1400 watts x 1 chan.

    Hifonics TXi 1508D R/B

    1500W RMS Class D Monoblock Titan TXi Series Amplifier (TXi1508D)

    TXi1508D big DISCONTINUED
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    Hifonics TXi 1508D R/B

    1500W RMS Class D Monoblock Titan TXi Series Amplifier (TXi1508D)

    Titan Series 1-Channel Class D Car Amplifier • 450W x 1 chan. @ 4 ohm • 900W x 1 chan. @ 2 ohm • 1500W x 1 chan. @ 1 ohm • PWM MOSFET power supply • Wired remote bass level control included • Mono channel operation • Preamp RCA outputs

    1

    Titan Series 1-Channel Class D Car Amplifier • 450W x 1 chan. @ 4 ohm • 900W x 1 chan. @ 2 ohm • 1500W x 1 chan. @ 1 ohm • PWM MOSFET power supply • Wired remote bass level control included • Mono channel operation • Preamp RCA outputs

    Hifonics BRX1516.1D (OPEN BOX COMPLETE)

    1500W Monoblock Brutus Series Super Class D Amplifier

    BRX1516.1D big DISCONTINUED
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    Hifonics BRX1516.1D (OPEN BOX COMPLETE)

    1500W Monoblock Brutus Series Super Class D Amplifier

    • RMS Power: 550W x 1 @ 4 ohm, 900W x 1 @ 2 ohm, 1500W x 1 @ 1 ohm
    • Total Peak Power: 1500W
    • Variable Low Pass Filter
    • Dimensions: 9.8" W x 12.5" L x 2.4" H

    • RMS Power: 550W x 1 @ 4 ohm, 900W x 1 @ 2 ohm, 1500W x 1 @ 1 ohm
    • Total Peak Power: 1500W
    • Variable Low Pass Filter
    • Dimensions: 9.8" W x 12.5" L x 2.4" H

    Hifonics Brutus BRZ1200.1D Open Box

    (Open Box) 1200W RMS, Brutus Series 1-Channel Monoblock Super Class D Amplifier (BRZ 1200.1D)

    BRZ1200.1D big DISCONTINUED
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    Hifonics Brutus BRZ1200.1D Open Box

    (Open Box) 1200W RMS, Brutus Series 1-Channel Monoblock Super Class D Amplifier (BRZ 1200.1D)

    Brutus Series Monoblock Class D Car Amplifier • 1200W x 1-Chan. @ 1 Ohm • 900W x 1-Chan. @ 2 Ohm • 450W x 1-Chan. @ 4 Ohm • Wired HFR-3 Remote • 4-Way System Protection • Phase Shift • Silver-Plated RCA Inputs

    Brutus Series Monoblock Class D Car Amplifier • 1200W x 1-Chan. @ 1 Ohm • 900W x 1-Chan. @ 2 Ohm • 450W x 1-Chan. @ 4 Ohm • Wired HFR-3 Remote • 4-Way System Protection • Phase Shift • Silver-Plated RCA Inputs

    DEI - Directed Audio D2400 R/B

    2400W Max, Class D Monoblock Amplifier

    D2400 big DISCONTINUED
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    DEI - Directed Audio D2400 R/B

    2400W Max, Class D Monoblock Amplifier

    Class-D Monoblock Amplifier • 12400W Max • 1200W RMS x 1 @ 1 • Remote Level Control Included • Variable Crossover • 8dB Bass Boost • Adjustable Input Sensitivity

    Class-D Monoblock Amplifier • 12400W Max • 1200W RMS x 1 @ 1 • Remote Level Control Included • Variable Crossover • 8dB Bass Boost • Adjustable Input Sensitivity

    Rockford Fosgate Prime R400-4D (Open Box, Complete)

    400W 4-Channel Class D Prime Series Full Range Amplifier

    R400-4D big DISCONTINUED
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    Rockford Fosgate Prime R400-4D (Open Box, Complete)

    400W 4-Channel Class D Prime Series Full Range Amplifier

    • 75W x 4-Chan. @ 4 ohm
    • 100W x 4-Chan. @ 2 ohm
    • 200W x 2 Chan. @ 4 ohm Bridged
    • Variable Bass Boost
    • Variable High-Pass Crossover
    • CEA-2006 Compliant

    • 75W x 4-Chan. @ 4 ohm
    • 100W x 4-Chan. @ 2 ohm
    • 200W x 2 Chan. @ 4 ohm Bridged
    • Variable Bass Boost
    • Variable High-Pass Crossover
    • CEA-2006 Compliant

    Alpine PDX-F4 R/B

    400W RMS PDX Series 4-Channel Power Density Digital Amplifier

    PDX-F4 big DISCONTINUED
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    Alpine PDX-F4 R/B

    400W RMS PDX Series 4-Channel Power Density Digital Amplifier

    PDX Series 4-Channel Car Amplifier • Class D • 400 Watts RMS • 100 Watts x 4 Chan. RMS • Variable High-Pass and Low-Pass Filter • Blue LED Power/Status Indicator • Compact Size

    PDX Series 4-Channel Car Amplifier • Class D • 400 Watts RMS • 100 Watts x 4 Chan. RMS • Variable High-Pass and Low-Pass Filter • Blue LED Power/Status Indicator • Compact Size

    Hifonics X1900.1D-RB (Factory Refurbished)

    1900W BRUTUS X-14 Series Class D Monoblock 1-Channel Amplifier

    X1900.1D big DISCONTINUED
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    Hifonics X1900.1D-RB (Factory Refurbished)

    1900W BRUTUS X-14 Series Class D Monoblock 1-Channel Amplifier

    • RMS Power: 800W x 1 @ 4 ohm, 1400W x 1 @ 2 ohm, 1900W x 1 @ 1 ohm
    • Total Peak Power: 1900W
    • CEA-2006 Compliant
    • 13.39"W x 2.5"H x 9.49"L

    • RMS Power: 800W x 1 @ 4 ohm, 1400W x 1 @ 2 ohm, 1900W x 1 @ 1 ohm
    • Total Peak Power: 1900W
    • CEA-2006 Compliant
    • 13.39"W x 2.5"H x 9.49"L

    Kenwood KACM3004 OPEN BOX COMPLETE

    600W Class D 4-Channel Compact Digital Car/Marine Certified Amplifier

    KAC-M3004 big DISCONTINUED
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    Kenwood KACM3004 OPEN BOX COMPLETE

    600W Class D 4-Channel Compact Digital Car/Marine Certified Amplifier

    Item has been previously installed and wires cut
    • RMS: 50W x 4 @ 4 ohm, 75W x 4 @ 2 ohm &bull, 150W x 2 Bridged @ 4 Ohm ; Total Peak Power: 600W
    • CEA-2006 Compliant/Preamp Outputs/LPF
    • Variable Bass Boost: 0 to +12 dB bass boost at 50 Hz
    • Lo-Level (RCA) and Speaker-level (high-level) inputs
    • Dimensions: 6-1/2"W x 4"D x 1-13/16"H

    Item has been previously installed and wires cut
    • RMS: 50W x 4 @ 4 ohm, 75W x 4 @ 2 ohm &bull, 150W x 2 Bridged @ 4 Ohm ; Total Peak Power: 600W
    • CEA-2006 Compliant/Preamp Outputs/LPF
    • Variable Bass Boost: 0 to +12 dB bass boost at 50 Hz
    • Lo-Level (RCA) and Speaker-level (high-level) inputs
    • Dimensions: 6-1/2"W x 4"D x 1-13/16"H

    SPL DK-3400D R/B

    (Refurbished) 3400W Max, Phantom Series Class D Monoblock Amplifier ( DK3400D )

    DK-3400D big DISCONTINUED
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    SPL DK-3400D R/B

    (Refurbished) 3400W Max, Phantom Series Class D Monoblock Amplifier ( DK3400D )

    SPL DK-3400D 3400W Max, Phantom Series Class D Monoblock Amplifier • 4 ohm: 1400 watts x 1 chan. • 2 ohm: 2100 watts x 1 chan. • 1 ohm: 2600 watts x 1 chan.

    SPL DK-3400D 3400W Max, Phantom Series Class D Monoblock Amplifier • 4 ohm: 1400 watts x 1 chan. • 2 ohm: 2100 watts x 1 chan. • 1 ohm: 2600 watts x 1 chan.

    Belva BB3000D (Factory Refurbished)

    1800W RMS Class D Monoblock BB Series Car Amplifier

    BB3000D big DISCONTINUED
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    Belva BB3000D (Factory Refurbished)

    1800W RMS Class D Monoblock BB Series Car Amplifier

    • RMS: 780W x 1 @ 4 ohm, 1260W x 1 @ 2 ohm, 1800W x 1 @ 1 ohm
    • Total Peak Power: 3000W
    • 1 Pair of Preamp Outputs
    • Bass Boost 0-12 dB from 30-80 Hz
    • Subsonic Filter from 20-50 Hz
    • Dimensions: 13-3/4"W x 8-1/4"D x 2-1/4"H

    • RMS: 780W x 1 @ 4 ohm, 1260W x 1 @ 2 ohm, 1800W x 1 @ 1 ohm
    • Total Peak Power: 3000W
    • 1 Pair of Preamp Outputs
    • Bass Boost 0-12 dB from 30-80 Hz
    • Subsonic Filter from 20-50 Hz
    • Dimensions: 13-3/4"W x 8-1/4"D x 2-1/4"H

    Hifonics GLX1000.1D (Factory Refurbished)

    1000W RMS, Class D Monoblock Gladiator Series Amplifier

    GLX1000.1D big DISCONTINUED
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    Hifonics GLX1000.1D (Factory Refurbished)

    1000W RMS, Class D Monoblock Gladiator Series Amplifier

    Gladiator Series Monoblock Class D Car Amplifier • 4 ohm: 475 watts x 1 chan. • 2 ohm: 750 watts x 1 chan. • 1 ohm: 1000 watts x 1 chan.

    Gladiator Series Monoblock Class D Car Amplifier • 4 ohm: 475 watts x 1 chan. • 2 ohm: 750 watts x 1 chan. • 1 ohm: 1000 watts x 1 chan.

    Earthquake Sound T2000WD/1 OPEN BOX INCOMPLETE

    2000W Max Digital Monoblock TNT Series Car Amplifier with High Level Inputs

    T2000WD/1 big DISCONTINUED
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    Earthquake Sound T2000WD/1 OPEN BOX INCOMPLETE

    2000W Max Digital Monoblock TNT Series Car Amplifier with High Level Inputs

    Box damaged, used, has marks, and is missing High Input Cable
    • RMS: 500W x 1 @ 4 ohm, 1000W x 1 @ 2 ohm
    • Total Peak Power: 2000W
    • Wired Bass Remote Included
    • Bass Boost: 0-10 dB
    • Class D Stealth Design
    • Dimensions: 11"D x 9-3/4"W x 2-1/4"H

    Box damaged, used, has marks, and is missing High Input Cable
    • RMS: 500W x 1 @ 4 ohm, 1000W x 1 @ 2 ohm
    • Total Peak Power: 2000W
    • Wired Bass Remote Included
    • Bass Boost: 0-10 dB
    • Class D Stealth Design
    • Dimensions: 11"D x 9-3/4"W x 2-1/4"H

    Hifonics ZRX2400.1D (Factory Refurbished)

    2400W Max Class D Monoblock Zeus Series Amplifier

    ZRX2400.1D big DISCONTINUED
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    Hifonics ZRX2400.1D (Factory Refurbished)

    2400W Max Class D Monoblock Zeus Series Amplifier

    • Peak: 650W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 2400W x 1 @ 1 ohm
    • Total Peak Power: 2400W
    • Class D Circuitry
    • Variable Bass Boost: 0 to +10 dB at 50 Hz
    • Wired Bass Remote Included
    • Dimensions: 17-3/16"L x 10"W x 2-7/16"H

    • Peak: 650W x 1 @ 4 ohm, 1200W x 1 @ 2 ohm, 2400W x 1 @ 1 ohm
    • Total Peak Power: 2400W
    • Class D Circuitry
    • Variable Bass Boost: 0 to +10 dB at 50 Hz
    • Wired Bass Remote Included
    • Dimensions: 17-3/16"L x 10"W x 2-7/16"H

    Precision Power PPI S850.1D Open Box

    850W RMS, Sedona Series Class D Monoblock Amplifier

    S850.1D big DISCONTINUED
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    Precision Power PPI S850.1D Open Box

    850W RMS, Sedona Series Class D Monoblock Amplifier

    Sedona Series Monoblock Car Amplifier • Class D • 350W @ 4 ohm • 600W @ 2 ohm • 850W @ 1 ohm • Variable Bass Boost • High Level Inputs • Brushed Aluminum Finish

    Sedona Series Monoblock Car Amplifier • Class D • 350W @ 4 ohm • 600W @ 2 ohm • 850W @ 1 ohm • Variable Bass Boost • High Level Inputs • Brushed Aluminum Finish

    Precision Power PPI i640.5- OPEN BOX

    640W RMS 5-Channel iON Series Class D Full-Range Digital Stereo Bridgeable Amplifier

    i640.5 big DISCONTINUED
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    Precision Power PPI i640.5- OPEN BOX

    640W RMS 5-Channel iON Series Class D Full-Range Digital Stereo Bridgeable Amplifier

    • Full-Range RMS: 60W x 4 @ 4 ohm, 80W x 4 @ 2 ohm
    • Subwoofer RMS: 200W x 1 @ 4 ohm, 350W x 1 @ 2 ohm
    • Double Sided FR-4 PC Board
    • SMT (Surface Mount Technology)
    • Variable Bass Boost: 0 - 12 dB
    • Dimensions: 5-5/16"W x 10-5/16"L x 1-11/16"H

    • Full-Range RMS: 60W x 4 @ 4 ohm, 80W x 4 @ 2 ohm
    • Subwoofer RMS: 200W x 1 @ 4 ohm, 350W x 1 @ 2 ohm
    • Double Sided FR-4 PC Board
    • SMT (Surface Mount Technology)
    • Variable Bass Boost: 0 - 12 dB
    • Dimensions: 5-5/16"W x 10-5/16"L x 1-11/16"H

    NVX - Worth the Envy - Direct to Consumer Car Audio
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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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