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2015 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 2015 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.
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.
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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Sundown Audio SAEv4-100.4

500W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-100.4)

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Sundown Audio SAEv4-100.4

500W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-100.4)

• 100 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

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Sundown Audio SAEv4-150.4 (Like New (Open Box))

900W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-150.4)

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Sundown Audio SAEv4-150.4 (Like New (Open Box))

900W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-150.4)

• 150 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 A/B 2 ohm Stable 4-Channel Amplifier

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List price $563.99
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• 150 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 A/B 2 ohm Stable 4-Channel Amplifier

Sundown Audio SFB200.4D (A-SFBV22004)

800W RMS Class D SFB Series 4 Channel Car Amplifier

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Sundown Audio SFB200.4D (A-SFBV22004)

800W RMS Class D SFB Series 4 Channel Car Amplifier

• 75 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• 200 watts x 4 channel @ 1 ohm
• Total RMS Power: 800 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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Sundown Audio SFB500.4 (A-SFBV25004)

2000W RMS Class D SFB Series 4-Channel Car Amplifier

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Sundown Audio SFB500.4 (A-SFBV25004)

2000W RMS Class D SFB Series 4-Channel Car Amplifier

• 500 watts x 4 channel @ 4 ohm
• 300 watts x 4 channel @ 2 ohm
• 200 watts x 4 channel @ 1 ohm
• Total RMS Power: 2000 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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Sundown Audio SAEv4-900.5

2100W RMS Class AB/D SAE Series 5-Channel Car Amplifier (SAEv.4-900.5)

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Sundown Audio SAEv4-900.5

2100W RMS Class AB/D SAE Series 5-Channel Car Amplifier (SAEv.4-900.5)

• 80 watts x 4 channel + 225 watts x 1 channel @ 4 ohm
• 120 watts x 4 channel + 325 watts x 1 channel @ 2 ohm
• 500 watts x 1 channel @ 1 ohm
• Total RMS Power: 2100 watts
• Class AB / D 1 ohm Stable 5-Channel Amplifier

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Sundown Audio SAEv4-200.4

1200W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-200.4)

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Sundown Audio SAEv4-200.4

1200W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-200.4)

• 200 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 A/B 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT04 Amp Kit at Checkout!
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Sundown Audio SALT-2000.6

2000W RMS Class D SALT Series 6-Channel Full Range Car Amplifier

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Sundown Audio SALT-2000.6

2000W RMS Class D SALT Series 6-Channel Full Range Car Amplifier

• 100 watts x 2 channel + 150 watts x 2 channel (3&4) @ 4 ohm
• 200 watts x 2 channel + 250 watts x 2 channel (3&4) @ 2 ohm
• 550 watts x 2 channel @ 1 ohm
• Total RMS Power: 2000 watts
• Class D 1 ohm Stable 6-Channel Amplifier

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List price $1187.99
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Sundown Audio SALT-200.4

1400W RMS Class D SALT Series 4-Channel Full Range Car Amplifier

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Sundown Audio SALT-200.4

1400W RMS Class D SALT Series 4-Channel Full Range Car Amplifier

• 200 watts x 4 channel @ 4 ohm
• 325 watts x 4 channel @ 2 ohm
• Bridged: 700 watts x 2 channel @ 4 ohm
• Total RMS Power: 1400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Sundown Audio SALT-1700.5

1700W RMS Class D SALT Series 5-Channel Full Range Car Amplifier

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Sundown Audio SALT-1700.5

1700W RMS Class D SALT Series 5-Channel Full Range Car Amplifier

• 125 watts x 4 channel + 480 watts x 1 channel @ 4 ohm
• 220 watts x 4 channel + 800 watts x 1 channel @ 2 ohm
• 1300 watts x 1 channel @ 1 ohm
• Total RMS Power: 1700 watts
• Class D 1 ohm Stable 5-Channel Amplifier

Save 30% off an NVX XKIT06 Amp Kit at Checkout!
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NVX XKIT06

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$129.49

$55.50 Savings!

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• 125 watts x 4 channel + 480 watts x 1 channel @ 4 ohm
• 220 watts x 4 channel + 800 watts x 1 channel @ 2 ohm
• 1300 watts x 1 channel @ 1 ohm
• Total RMS Power: 1700 watts
• Class D 1 ohm Stable 5-Channel Amplifier

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Sundown Audio SALT-500.4

2800W RMS Class D SALT Series 4-Channel Full Range Car Amplifier

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Sundown Audio SALT-500.4

2800W RMS Class D SALT Series 4-Channel Full Range Car Amplifier

• 1400 watts x 2 channel @ 4 ohm
• 700 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 4 channel @ 4 ohm
• Total RMS Power: 2800 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT04 Amp Kit at Checkout!
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List price $1127.99
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NVX XKIT04

NVX XKIT04

$192.98

$135.09

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Sundown Audio SAEv4-150.4

900W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-150.4)

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Sundown Audio SAEv4-150.4

900W RMS Class AB SAE Series 4-Channel Car Amplifier (SAEv.4-150.4)

• 150 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 A/B 2 ohm Stable 4-Channel Amplifier

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List price $563.99
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Sundown Audio SFB1000.4D (A-SFB10004)

4000W RMS Class D SFB Series 4-Channel Car Amplifier

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Sundown Audio SFB1000.4D (A-SFB10004)

4000W RMS Class D SFB Series 4-Channel Car Amplifier

• 325 watts x 4 channel @ 4 ohm
• 550 watts x 4 channel @ 2 ohm
• 1000 watts x 4 channel @ 1 ohm
• Total RMS Power: 4000 watts
• Class D 1 ohm Stable 4-Channel Amplifier

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

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Sundown Audio SAM-150.2

300W RMS Class D SAM Series 2-Channel Marine and Powersports Amplifier with Bluetooth

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Sundown Audio SAM-150.2

300W RMS Class D SAM Series 2-Channel Marine and Powersports Amplifier with Bluetooth

• 150 watts x 2 channel @ 4 ohm
• 270 watts x 2 channel @ 2 ohm
• Bridged: 540 watts x 1 channel @ 4 ohm
• Total RMS Power: 540 watts
• Class D 2 ohm Stable 2-Channel Amplifier

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List price $359.00
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• 150 watts x 2 channel @ 4 ohm
• 270 watts x 2 channel @ 2 ohm
• Bridged: 540 watts x 1 channel @ 4 ohm
• Total RMS Power: 540 watts
• Class D 2 ohm Stable 2-Channel Amplifier

Sundown Audio SAM-100.4

400W RMS Class D SAM Series 4-Channel Marine and Amplifier with Bluetooth

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Sundown Audio SAM-100.4

400W RMS Class D SAM Series 4-Channel Marine and Amplifier with Bluetooth

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

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List price $419.99
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• 700 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• Bridged: 700 watts x 4 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Sundown Audio SFB1800.5D (A-SFB18005)

1800W RMS Class D SFB Series 5 Channel Car Amplifier

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Sundown Audio SFB1800.5D (A-SFB18005)

1800W RMS Class D SFB Series 5 Channel Car Amplifier

• 200 watts x 4 channel + 250 watts x 1 channel @ 4 ohm
• 300 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1800 watts
• Class D 1 ohm Stable 5-Channel Amplifier

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List price $599.99
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• 200 watts x 4 channel + 250 watts x 1 channel @ 4 ohm
• 300 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1800 watts
• Class D 1 ohm Stable 5-Channel Amplifier

 
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    FAQ for Multi-channel Amplifiers for Adding Speakers in 2015 IS250C

    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 2015 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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