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2011 Lexus IS250C

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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 2011 Lexus IS250C

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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DS18 X4

1320W Peak (560W RMS) Class D X-Series 4 Channel Full Range Car Amplifier

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DS18 X4

1320W Peak (560W RMS) Class D X-Series 4 Channel Full Range Car Amplifier

• 70 watts x 4 channel @ 4 ohm
• 140 watts x 4 channel @ 2 ohm
• Bridged: 220 watts x 2 channel @ 4 ohm
• Total RMS Power: 560 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 70 watts x 4 channel @ 4 ohm
• 140 watts x 4 channel @ 2 ohm
• Bridged: 220 watts x 2 channel @ 4 ohm
• Total RMS Power: 560 watts
• Class D 2 ohm Stable 4-Channel Amplifier

MTX Terminator TN3004

300W RMS Class D Terminator Series 4 Channel Car Amplifier

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MTX Terminator TN3004

300W RMS Class D Terminator Series 4 Channel Car Amplifier

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

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JL Audio XDM500/3

500W RMS Class D XDM Series 3 Channel Car and Marine Amplifier

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JL Audio XDM500/3

500W RMS Class D XDM Series 3 Channel Car and Marine Amplifier

• 75 watts x 2 channel + 180 watts x 1 channel @ 4 ohm
• 100 watts x 2 channel + 300 watts x 1 channel @ 2 ohm
• Bridged: 200 watts x 1 channel @ 4 ohm + 300 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 3-Channel Amplifier

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Hifonics HCM-400.4D Colossus Mini

400W Peak Class D Colossus Mini Series 4 Channel Amplifier

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Hifonics HCM-400.4D Colossus Mini

400W Peak Class D Colossus Mini Series 4 Channel Amplifier

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

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JBL Marine A5055 (JBLMA5055AM)

800W RMS Class AB/D Marine Series 5-Channel Marine Amplifier with Remote Bass Knob

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JBL Marine A5055 (JBLMA5055AM)

800W RMS Class AB/D Marine Series 5-Channel Marine Amplifier with Remote Bass Knob

• 50 watts x 4 channel + 300 watts x 1 channel @ 4 ohm
• 75 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• Bridged: 130 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class AB / D 2 ohm Stable 5-Channel-Channel Amplifier

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• 50 watts x 4 channel + 300 watts x 1 channel @ 4 ohm
• 75 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• Bridged: 130 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class AB / D 2 ohm Stable 5-Channel-Channel Amplifier

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Planet Audio MB1200.4D

1200W RMS Class D Planet Pro Series 4 Channel Car Amplifier with Bass Remote

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Planet Audio MB1200.4D

1200W RMS Class D Planet Pro Series 4 Channel Car Amplifier with Bass Remote

• 113 watts x 4 channel @ 4 ohm
• 225 watts x 4 channel @ 2 ohm
• Bridged: 450 watts x 2 channel @ 4 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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NVX XKIT44

NVX XKIT44

$119.99

$83.99

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• 113 watts x 4 channel @ 4 ohm
• 225 watts x 4 channel @ 2 ohm
• Bridged: 450 watts x 2 channel @ 4 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Soundstream PN2.2000DX

2000W Peak (600W RMS) Class D Picasso Nano Series 2-Channel Car Amplifier with Bass Remote

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Soundstream PN2.2000DX

2000W Peak (600W RMS) Class D Picasso Nano Series 2-Channel Car Amplifier with Bass Remote

• 220 watts x 2 channel @ 4 ohm
• 300 watts x 2 channel @ 2 ohm
• Bridged: 600 watts x 1 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 2-Channel Amplifier

Save 30% on an NVX XKIT42 Amp Kit with Purchase!
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List price $158.99
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NVX XAPK4 + XIV25 (XKIT42 Sub)

NVX XAPK4 + XIV25 (XKIT42 Sub)

$109.99

$76.99

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Stinger SPX700X4

700W RMS Class D SPX Series 4 Channel Marine and Powersports Amplifier

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Stinger SPX700X4

700W RMS Class D SPX Series 4 Channel Marine and Powersports Amplifier

• 125 watts x 4 channel @ 4 ohm
• 175 watts x 4 channel @ 2 ohm
• Bridged: 125 watts x 2 channel @ 4 ohm
• Total RMS Power: 700 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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List price $629.00
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• 125 watts x 4 channel @ 4 ohm
• 175 watts x 4 channel @ 2 ohm
• Bridged: 125 watts x 2 channel @ 4 ohm
• Total RMS Power: 700 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Hifonics HCM-800.4D Colossus Mini

800W Peak Class D Colossus Mini Series 4 Channel Car Amplifier

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Hifonics HCM-800.4D Colossus Mini

800W Peak Class D Colossus Mini Series 4 Channel Car Amplifier

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

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List price $449.99
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Crunch DR-2525.4D

2525W Peak Class D V-Drive Series 4-Channel Car Amplifier

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Crunch DR-2525.4D

2525W Peak Class D V-Drive Series 4-Channel Car Amplifier

• 320 watts x 4 channel @ 4 ohm
• 630 watts x 4 channel @ 2 ohm
• Bridged: 1260 watts x 2 channel @ 4 ohm
• Total RMS Power:
• Class D 2 ohm Stable 4-Channel Amplifier

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Hifonics Brutus BRL1600.4

1600W RMS Class D Brutus BRL Series 4-Channel Car Amplifier

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Hifonics Brutus BRL1600.4

1600W RMS Class D Brutus BRL Series 4-Channel Car Amplifier

• 300 watts x 4 channel @ 4 ohm
• 450 watts x 4 channel @ 2 ohm
• Bridged: 880 watts x 2 channel @ 4 ohm
• Total RMS Power: 1600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT04 Amp Kit at Checkout!
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NVX XKIT04

NVX XKIT04

$192.98

$135.09

$57.89 Savings!

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• 300 watts x 4 channel @ 4 ohm
• 450 watts x 4 channel @ 2 ohm
• Bridged: 880 watts x 2 channel @ 4 ohm
• Total RMS Power: 1600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Limited time!

Kicker KMA150.2 (48KMA1502)

190W Peak (150W RMS) Class AB KM Series 2-Channel Marine Amplifier

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Kicker KMA150.2 (48KMA1502)

190W Peak (150W RMS) Class AB KM Series 2-Channel Marine Amplifier

• 40 watts x 2 channel @ 4 ohm
• 75 watts x 2 channel @ 2 ohm
• Bridged: 150 watts x 1 channel @ 4 ohm
• Total RMS Power: 150 watts
• Class A/B 2 ohm Stable 2-Channel Amplifier

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List price $199.99
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• 40 watts x 2 channel @ 4 ohm
• 75 watts x 2 channel @ 2 ohm
• Bridged: 150 watts x 1 channel @ 4 ohm
• Total RMS Power: 150 watts
• Class A/B 2 ohm Stable 2-Channel Amplifier

Hifonics A2500.5D Alpha

2500W Peak Class D Alpha Series 5-Channel Car Amplifier (with Bass Remote)

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Hifonics A2500.5D Alpha

2500W Peak Class D Alpha Series 5-Channel Car Amplifier (with Bass Remote)

• 60 watts x 4 channel + 250 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 450 watts x 1 channel @ 2 ohm
• 750 watts x 1 channel (Subwoofer) @ 1 ohm
• Total Peak Power: 2500 watts
• Class D 1 ohm Stable 5-Channel-Channel Amplifier

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DS18 ION1000.4D

3000W Peak (1000W RMS) Class D ION Series 4 Channel Full Range Car Amplifier

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DS18 ION1000.4D

3000W Peak (1000W RMS) Class D ION Series 4 Channel Full Range Car Amplifier

• 150 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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NVX XKIT44

NVX XKIT44

$119.99

$83.99

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Cerwin-Vega CVP2700.5

2700W Peak (920W RMS) Class D CVP Series 5-Channel Car Amplifier with Bass Remote

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Cerwin-Vega CVP2700.5

2700W Peak (920W RMS) Class D CVP Series 5-Channel Car Amplifier with Bass Remote

• 80 watts x 4 channel + 220 watts x 1 channel @ 4 ohm
• 130 watts x 4 channel + 400 watts x 1 channel @ 2 ohm
• Total RMS Power: 920 watts
• Class D 2 ohm Stable 5-Channel Amplifier

Save 30% off an NVX XKIT46 Amp Kit at Checkout!
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NVX XKIT46

NVX XKIT46

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Hifonics BG-520.4

520W RMS Class D Brutus BG Series 4-Channel Car Amplifier

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Hifonics BG-520.4

520W RMS Class D Brutus BG Series 4-Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 260 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 260 watts x 2 channel @ 4 ohm
• Total RMS Power: 520 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Limited time!

MB Quart NA2-320.4

320W Peak Class D Nautic Series 4 Channel Marine and Powersports Amplifier

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MB Quart NA2-320.4

320W Peak Class D Nautic Series 4 Channel Marine and Powersports Amplifier

• 40 watts x 4 channel @ 4 ohm
• 80 watts x 4 channel @ 2 ohm
• Total Power: 320 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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• 40 watts x 4 channel @ 4 ohm
• 80 watts x 4 channel @ 2 ohm
• Total Power: 320 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Cerwin-Vega CVP2400.4

2400W Peak (840W RMS) Class D CVP Series 4-Channel Car Amplifier

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Cerwin-Vega CVP2400.4

2400W Peak (840W RMS) Class D CVP Series 4-Channel Car Amplifier

• 120 watts x 4 channel @ 4 ohm
• 210 watts x 4 channel @ 2 ohm
• Bridged: 410 watts x 2 channel @ 4 ohm
• Total RMS Power: 840 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Hifonics Brutus BRL1200.4

1200W RMS Class D Brutus BRL Series 4-Channel Car Amplifier

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Hifonics Brutus BRL1200.4

1200W RMS Class D Brutus BRL Series 4-Channel Car Amplifier

• 150 watts x 4 channel @ 4 ohm
• 300 watts x 4 channel @ 2 ohm
• Bridged: 600 watts x 2 channel @ 4 ohm
• Total RMS Power: 1200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Rockford Fosgate Punch Marine PM500X2

500W RMS Class AB Punch Series 2 Channel Marine Amplifier

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Rockford Fosgate Punch Marine PM500X2

500W RMS Class AB Punch Series 2 Channel Marine Amplifier

• 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 A/B 2 ohm Stable 2-Channel Amplifier

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    FAQ for Multi-channel Amplifiers for Adding Speakers in 2011 IS250C

    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 2011 Lexus IS250C?

    A: Yes this page includes all the best Multi-channel Amplifiers for Adding Speakers that work in your IS250C.

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