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2000 Harley Davidson FXSTD/I Softail Deuce

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

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Amps for Adding Speakers for 2000 Harley Davidson FXSTD/I Softail Deuce

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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Kicker PXA400.4 (48PXA4004)

800W Peak (400W RMS) Class D PXA Series 4-Channel Marine and Powersports Amplifier

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Kicker PXA400.4 (48PXA4004)

800W Peak (400W RMS) Class D PXA Series 4-Channel Marine and Powersports Amplifier

• 100 watts x 4 channel @ 4 ohm
• 150 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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Deaf Bonce Machete MLA-60.4

360W RMS Class D Machete Series 4-Channel Car Amplifier

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Deaf Bonce Machete MLA-60.4

360W RMS Class D Machete Series 4-Channel Car Amplifier

• 60 watts x 4 channel @ 4 ohm
• 90 watts x 4 channel @ 2 ohm
• Bridged: 180 watts x 2 channel @ 4 ohm
• Total RMS Power: 360 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

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NVX XKIT44

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Hertz Venezia V5C Compact

1010W RMS Venezia Series Class-D 5-Channel Marine Amplifier

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Hertz Venezia V5C Compact

1010W RMS Venezia Series Class-D 5-Channel Marine Amplifier

• 5 Channel: 80 watts x 4 channel + 330 watts x 1 channel (at 4 ohms)
• 5 Channel: 115 watts x 4 channel + 550 watts x 1 channel (at 4 ohms)
• 3 Channel: 230 watts x 2 channel + 330 watts x 1 channel (at 4 ohms)
• 3 Channel: 230 watts x 2 channel (at 4 ohms) + 550 watts x 1 channel (at 2 ohms)
• Total RMS Power: 1010 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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• 5 Channel: 80 watts x 4 channel + 330 watts x 1 channel (at 4 ohms)
• 5 Channel: 115 watts x 4 channel + 550 watts x 1 channel (at 4 ohms)
• 3 Channel: 230 watts x 2 channel + 330 watts x 1 channel (at 4 ohms)
• 3 Channel: 230 watts x 2 channel (at 4 ohms) + 550 watts x 1 channel (at 2 ohms)
• Total RMS Power: 1010 watts
• Class D 2 ohm Stable 5-Channel Amplifier

Diamond Audio MICRO84U

660W RMS Class D Micro8U Series 4-Channel Full Range Car Amplifier

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Diamond Audio MICRO84U

660W RMS Class D Micro8U Series 4-Channel Full Range Car Amplifier

• 85 watts x 4 channel @ 4 ohm
• 85 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 660 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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MB Quart RA1-710.5

700W Peak (550W RMS) Class D Reference Series 5 Channel Car Amplifier with Bass Remote

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MB Quart RA1-710.5

700W Peak (550W RMS) Class D Reference Series 5 Channel Car Amplifier with Bass Remote

• 50 watts x 4 channel + 150 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 150 watts x 1 channel @ 2 ohm
• Bridged: 350 watts x 1 channel @ 4 ohm + 150 watts x 1 channel @ 2 ohm
• Total RMS Power: 550 watts
• Class D 1 ohm Stable 5-Channel Amplifier

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Autotek MM-3025.4D Mean Machine

3000W Peak Class D Mean Machine Series 4-Channel Car Amplifier

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Autotek MM-3025.4D Mean Machine

3000W Peak Class D Mean Machine Series 4-Channel Car Amplifier

• 375 watts x 4 channel @ 4 ohm
• 750 watts x 4 channel @ 2 ohm
• Bridged: 1500 watts x 2 channel @ 4 ohm
• Total Peak Power: 3000 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

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Deaf Bonce Apocalypse ASA 2000.2

2000W RMS Class D Apocalypse Sport Series 2-Channel Car Amplifier

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Deaf Bonce Apocalypse ASA 2000.2

2000W RMS Class D Apocalypse Sport Series 2-Channel Car Amplifier

• 940 watts x 2 channel @ 4 ohm
• 1490 watts x 2 channel @ 2 ohm
• 2000 watts x 2 channel @ 1 ohm
• Bridged: 2980 watts x 1 channel @ 4 ohm
• Bridged: 4000 watts @ 2 ohm
• Total RMS Power: 2000 watts
• Class D 1 ohm Stable 2-Channel-Channel Amplifier

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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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DS18 FRP4K4TI

4000W RMS Class D FRP Series 4-Channel Compact Car Amplfier (Titanium)

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DS18 FRP4K4TI

4000W RMS Class D FRP Series 4-Channel Compact Car Amplfier (Titanium)

• 400 watts x 4 channel @ 4 ohm
• 700 watts x 4 channel @ 2 ohm
• 1000 watts x 4 channel @ 1 ohm
• Bridged: 1200 watts x 2 channel @ 4 ohm
• Bridged: 1800 watts x 2 channel @ 2 ohm
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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• 400 watts x 4 channel @ 4 ohm
• 700 watts x 4 channel @ 2 ohm
• 1000 watts x 4 channel @ 1 ohm
• Bridged: 1200 watts x 2 channel @ 4 ohm
• Bridged: 1800 watts x 2 channel @ 2 ohm
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable 4-Channel Amplifier

Wet Sounds SYN-DX6

1400W Peak Class D SYN-DX Series 6 Channel Marine Amplifier

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Wet Sounds SYN-DX6

1400W Peak Class D SYN-DX Series 6 Channel Marine Amplifier

• 125 watts x 4 channel + 150 watts x 2 channel @ 4 ohm
• 200 watts x 4 channel + 300 watts x 2 channel @ 2 ohm
• Bridged: 400 watts x 2 channel + 600 watts x 1 channel @ 4 ohm
• Total RMS Power:
• Class D 2 ohm Stable 6-Channel Marine Amplifier

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• 125 watts x 4 channel + 150 watts x 2 channel @ 4 ohm
• 200 watts x 4 channel + 300 watts x 2 channel @ 2 ohm
• Bridged: 400 watts x 2 channel + 600 watts x 1 channel @ 4 ohm
• Total RMS Power:
• Class D 2 ohm Stable 6-Channel Marine Amplifier

Wet Sounds HTM-8

1200W RMS Class D HTM Series 8 Channel Marine Amplifier with LED Backlit Badge

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Wet Sounds HTM-8

1200W RMS Class D HTM Series 8 Channel Marine Amplifier with LED Backlit Badge

• 85 watts x 8 channel @ 4 ohm
• 150 watts x 8 channel @ 2 ohm
• Bridged: 300 watts x 4 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 2 ohm Stable 8-Channel Amplifier

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• 85 watts x 8 channel @ 4 ohm
• 150 watts x 8 channel @ 2 ohm
• Bridged: 300 watts x 4 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 2 ohm Stable 8-Channel Amplifier

Cerwin Vega S9600.4D

600W RMS Class D Stroker Series 4 Channel Car Amplifier

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Cerwin Vega S9600.4D

600W RMS Class D Stroker Series 4 Channel Car Amplifier

• 140 watts x 4 channel @ 4 ohm
• 170 watts x 4 channel @ 2 ohm
• Bridged: 400 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Wet Sounds STX MICRO-4

560W Peak Class D Stealth STX Series 4 Channel Compact Marine and Powersports Amplifier

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Wet Sounds STX MICRO-4

560W Peak Class D Stealth STX Series 4 Channel Compact Marine and Powersports Amplifier

• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power:
• Class D 2 ohm Stable 4-Channel Amplifier

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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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Wet Sounds Sinister-SDX2

1250W RMS Class D Sinister Series 2 Channel Marine Amplifier

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Wet Sounds Sinister-SDX2

1250W RMS Class D Sinister Series 2 Channel Marine Amplifier

• 400 watts x 2 channel @ 4 ohm
• 620 watts x 2 channel @ 2 ohm
• Bridged: 1250 watts x 1 channel @ 4 ohm
• Total RMS Power: 1250 watts
• Class D 2 ohm Stable 2-Channel Marine Amplifier

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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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$209.90

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Wet Sounds SYN-DX4

800W Peak Class D SYN-DX Series 4 Channel Marine Amplifier

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Wet Sounds SYN-DX4

800W Peak Class D SYN-DX Series 4 Channel Marine Amplifier

• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power:
• Class D 2 ohm Stable 4-Channel Amplifier

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• @ 4 ohm
• @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power:
• Class D 2 ohm Stable 4-Channel Amplifier

MB Quart RA1-280.4

280W RMS Class D Reference Series 4 Channel Car Amplifier

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MB Quart RA1-280.4

280W RMS Class D Reference Series 4 Channel Car Amplifier

• 50 watts x 4 channel @ 4 ohm
• 70 watts x 4 channel @ 2 ohm
• Total RMS Power: 280 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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List price $290.00
-9% $262.50

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Save 30% off an NVX XKIT44 Amp Kit at Checkout! Add a qualifying amplifier to your cart and save 30% on the NVX XKIT44 Amp Kit! No code needed — discount applies automatically at checkout.
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DS18 G3600.6D

3600W Peak (1500W RMS) Class D GEN-X Series 6-Channel Car Amplifier with Bass Remote

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DS18 G3600.6D

3600W Peak (1500W RMS) Class D GEN-X Series 6-Channel Car Amplifier with Bass Remote

• 200 watts x 6 channel @ 4 ohm
• 250 watts x 6 channel @ 2 ohm
• Bridged: 500 watts x 3 channel @ 4 ohm
• Total RMS Power: 1500 watts
• Class D 2 ohm Stable 6-Channel Amplifier

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Cerwin-Vega XED6004D

500W Peak (480W RMS) Class D XED Series 4 Channel Car Amplifier

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Cerwin-Vega XED6004D

500W Peak (480W RMS) Class D XED Series 4 Channel Car Amplifier

• 80 watts x 4 channel @ 4 ohm
• 120 watts x 4 channel @ 2 ohm
• Bridged: 220 watts x 2 channel @ 4 ohm
• Total RMS Power: 480 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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    FAQ for Multi-channel Amplifiers for Adding Speakers in 2000 FXSTD/I Softail Deuce

    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 2000 Harley Davidson FXSTD/I Softail Deuce?

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