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2005 Mazda 3

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Use our shopping filters to find the right 2/3/4-channel amp to power upgraded speakers properly.

Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Amps for Adding Speakers for 2005 Mazda 3

Some vehicles require an amp bypass module, a line-output converter like the NVX XLCA2 or AudioControl LC2i, or a DSP to integrate with your factory radio and avoid bass roll-off. Bass roll-off occurs when a factory radio's crossover is designed only for the original equipment speakers, resulting in a not complete signal being sent to your new aftermarket amp.

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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.
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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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DC Audio 90.4

520W RMS Class AB Competition Series 4-Channel Car Amplifier (with Bass Remote)

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DC Audio 90.4

520W RMS Class AB Competition Series 4-Channel Car Amplifier (with Bass Remote)

• 90 watts x 4 channel @ 4 ohm
• 130 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class A/B 2 ohm Stable 4-Channel-Channel Amplifier

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Rockford Fosgate Punch P500X2 + FREE $50 Gift Card

500W RMS 2-Channel Amplifier (P500X.2)

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Rockford Fosgate Punch P500X2 + FREE $50 Gift Card

500W RMS 2-Channel Amplifier (P500X.2)

• 150W x 2 Chan. @ 4 ohm
• 250W x 2 Chan. @ 2 ohm
• Built In NOMAD "Real Time" Analog Computer
• 2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

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• 150W x 2 Chan. @ 4 ohm
• 250W x 2 Chan. @ 2 ohm
• Built In NOMAD "Real Time" Analog Computer
• 2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

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DS18 G1800.4D

1800W Peak (920W RMS) Class D GEN-X Series 4 Channel Full Range Car Amplifier

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DS18 G1800.4D

1800W Peak (920W RMS) Class D GEN-X Series 4 Channel Full Range Car Amplifier

• 150 watts x 4 channel @ 4 ohm
• 230 watts x 4 channel @ 2 ohm
• Bridged: 430 watts x 2 channel @ 4 ohm
• Total RMS Power: 920 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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NVX XKIT44

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Hertz HCP 5D

1500W Peak (750W RMS) Class D Hertz Compact Power (HCP) Series 5-Channel Full Range Car Amplifier

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Hertz HCP 5D

1500W Peak (750W RMS) Class D Hertz Compact Power (HCP) Series 5-Channel Full Range Car Amplifier

• 55 watts x 4 channel + 160 watts x 1 channel @ 4 ohm
• 90 watts x 4 channel + 280 watts x 1 channel @ 2 ohm
• Bridged: 180 watts x 2 channel + 160 watts x 1 channel @ 4 ohm
• Bridged: 180 watts x 2 channel + 280 watts x 1 channel @ 2 ohm
• Total RMS Power: 750 watts
• Class D 2 ohm Stable 5-Channel-Channel Amplifier

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NVX XKIT86

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Deaf Bonce Machete MFA 2.320

960W RMS Class D Machete Series 2 Channel Car Amplifier

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Deaf Bonce Machete MFA 2.320

960W RMS Class D Machete Series 2 Channel Car Amplifier

• 320 watts x 2 channel @ 4 ohm
• 480 watts x 2 channel @ 2 ohm
• Bridged: 960 watts x 1 channel @ 4 ohm
• Total RMS Power: 960 watts
• Class D 2 ohm Stable 2-Channel Amplifier

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NVX XAPK4 + XIV25 (XKIT42 Sub)

NVX XAPK4 + XIV25 (XKIT42 Sub)

$109.99

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Cerwin-Vega CVPM400.4D

400W Peak (360W RMS) Class D CVPM Series 4 Channel Car Amplifier

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Cerwin-Vega CVPM400.4D

400W Peak (360W RMS) Class D CVPM Series 4 Channel Car Amplifier

• 60 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 240 watts x 2 channel @ 4 ohm
• Total RMS Power: 360 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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MB Quart FA2-400.4

400W RMS Class D Formula Series 4 Channel Car Amplifier

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MB Quart FA2-400.4

400W RMS Class D Formula Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Kicker PXA1000.5 (48PXA10005)

1400W Peak (1000W RMS) Class D PXA Series 5-Channel Marine and Powersports Amplifier

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Kicker PXA1000.5 (48PXA10005)

1400W Peak (1000W RMS) Class D PXA Series 5-Channel Marine and Powersports Amplifier

• 100 watts x 4 channel + 300 watts x 1 channel @ 4 ohm
• 150 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• 700 watts x 1 channel @ 1 ohm (subwoofer output)
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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Deaf Bonce Machete MFA-5.1000

480W RMS Class D Machete Series 5-Channel Car Amplifier

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Deaf Bonce Machete MFA-5.1000

480W RMS Class D Machete Series 5-Channel Car Amplifier

• 80 watts x 4 channel + 300 watts x 1 channel @ 4 ohm
• 120 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• Bridged: 240 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 480 watts
• Class D 4 ohm Stable 5-Channel-Channel Amplifier

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Cerwin Vega B52

1000W Peak (500W RMS) Class D Stealth Bomber Series 2 Channel Car Amplifier with Bass Remote

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Cerwin Vega B52

1000W Peak (500W RMS) Class D Stealth Bomber Series 2 Channel Car Amplifier with Bass Remote

• 150 watts x 2 channel @ 4 ohm
• 250 watts x 2 channel @ 2 ohm
• Bridged: 500 watts x 1 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 2-Channel Amplifier

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DS18 FRP-1.2K4/BL

1200W RMS Class D FRP Series 4-Channel Car Amplifier (Blue)

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DS18 FRP-1.2K4/BL

1200W RMS Class D FRP Series 4-Channel Car Amplifier (Blue)

• 120 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• 300 watts x 4 channel @ 1 ohm
• Bridged: 350 watts x 2 channel @ 4 ohm
• Bridged: 500 watts x 2 channel @ 2 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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List price $359.99
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NVX XKIT44

NVX XKIT44

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• 120 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• 300 watts x 4 channel @ 1 ohm
• Bridged: 350 watts x 2 channel @ 4 ohm
• Bridged: 500 watts x 2 channel @ 2 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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DS18 SMD-200.4AB

800W RMS Class AB SMD Series 4 Channel Car Amplifier with Bass Remote

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DS18 SMD-200.4AB

800W RMS Class AB SMD Series 4 Channel Car Amplifier with Bass Remote

• 150 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

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NVX XKIT44

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DS18 SMD-2800.5

2800W RMS Class AB/D SMD Series 5 Channel Car Amplifier with Bass Remote

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DS18 SMD-2800.5

2800W RMS Class AB/D SMD Series 5 Channel Car Amplifier with Bass Remote

• 180 watts x 4 channel + 700 watts x 1 channel @ 4 ohm
• 250 watts x 4 channel + 1100 watts x 1 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm + 1100 watts x 1 channel @ 2 ohm
• Total RMS Power: 2800 watts
• Class AB / D 1 ohm Stable 5-Channel Amplifier

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NVX XKIT06

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MB Quart RA1-150.2

100W RMS Class D Reference Series 2 Channel Car Amplifier

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MB Quart RA1-150.2

100W RMS Class D Reference Series 2 Channel Car Amplifier

• 50 watts x 2 channel @ 4 ohm
• 100 watts x 2 channel @ 2 ohm
• Bridged: 200 watts x 1 channel @ 4 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 2-Channel Amplifier

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Hertz ML Power 5

950W RMS Class D Mille Power Series 5-Channel Full Range Car Amplifier

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Hertz ML Power 5

950W RMS Class D Mille Power Series 5-Channel Full Range Car Amplifier

• 70 watts x 4 channel + 380 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 550 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 380 watts x 1 channel @ 4 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm + 550 watts x 1 channel @ 2 ohm
• Total RMS Power: 950 watts
• Class D 2 ohm Stable 5-Channel-Channel Amplifier

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List price $1060.00
-17% $879.99

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DS18 FRP-1.2K4/TI

1200W RMS Class D FRP Series 4-Channel Car Amplifier (Titanium)

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DS18 FRP-1.2K4/TI

1200W RMS Class D FRP Series 4-Channel Car Amplifier (Titanium)

• 120 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• 300 watts x 4 channel @ 1 ohm
• Bridged: 350 watts x 2 channel @ 4 ohm
• Bridged: 500 watts x 2 channel @ 2 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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List price $359.99
-17% $299.95

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• 120 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• 300 watts x 4 channel @ 1 ohm
• Bridged: 350 watts x 2 channel @ 4 ohm
• Bridged: 500 watts x 2 channel @ 2 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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Cerwin-Vega XED4004D

400W Peak (360W RMS) Class D XED Series 4 Channel Car Amplifier

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Cerwin-Vega XED4004D

400W Peak (360W RMS) Class D XED Series 4 Channel Car Amplifier

• 60 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 170 watts x 2 channel @ 4 ohm
• Total RMS Power: 360 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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DS18 G1000.4D

1000 Peak (600W RMS) Class D Gen-X Series 4 Channel Full Range Car Amplifier

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DS18 G1000.4D

1000 Peak (600W RMS) Class D Gen-X Series 4 Channel Full Range Car Amplifier

• 90 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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DS18 SXE-2000.4D/RD

2000W Peak (640W RMS) Class D SXE Series 4 Channel Car Amplifier

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DS18 SXE-2000.4D/RD

2000W Peak (640W RMS) Class D SXE Series 4 Channel Car Amplifier

• 100 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 3 channel @ 4 ohm
• Total RMS Power: 640 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Red Brushed Aluminum Body Color

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$239.95

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MTX Terminator TN1502

150W RMS Class D Terminator Series 2 Channel Car Amplifier

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MTX Terminator TN1502

150W RMS Class D Terminator Series 2 Channel Car Amplifier

• 50 watts x 2 channel + @ 4 ohm
• 75 watts x 2 channel + @ 2 ohm
• Bridged: 150 watts x 1 channel @ 4 ohm + @ 2 ohm
• Total RMS Power: 150 watts
• Class D 2 ohm Stable 2-Channel-Channel Amplifier

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    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 2005 Mazda 3?

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