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2007 Cadillac STS

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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 2007 Cadillac STS

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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AudioControl EPICBIGFOUR

1400W RMS Class D Epic Series 4-Channel Car Amplifier

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AudioControl EPICBIGFOUR

1400W RMS Class D Epic Series 4-Channel Car Amplifier

• 200 watts x 4 channel @ 4 ohm
• 350 watts x 4 channel @ 2 ohm
• Bridged: 650 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 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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NVX - Worth the Envy - Direct to Consumer Car Audio
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Crunch GP-2000.2

2000W Peak Class AB GP Series 2-Channel Car Amplifier

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Crunch GP-2000.2

2000W Peak Class AB GP Series 2-Channel Car Amplifier

• 500 watts x 2 channel @ 4 ohm
• 1000 watts x 2 channel @ 2 ohm
• Bridged: 2000 watts x 1 channel @ 4 ohm
• Total Peak Power: 2000 watts
• Class A/B 2 ohm Stable 2-Channel Amplifier

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

NVX XAPK4 + XIV25 (XKIT42 Sub)

$109.99

$76.99

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Rockford Fosgate Punch P400X4 + NVX XFLOC4 Line-Output-Converter

400W 4-Channel Amplifier (P400X.4) + NVX 4-Channel L.O.C. + 8 Gauge Amp Kit

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Rockford Fosgate Punch P400X4 + NVX XFLOC4 Line-Output-Converter

400W 4-Channel Amplifier (P400X.4) + NVX 4-Channel L.O.C. + 8 Gauge Amp Kit

• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS x 2 @ 4 ohm, Bridged
• Built In NOMAD "Real Time" Analog Computer
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

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• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS x 2 @ 4 ohm, Bridged
• Built In NOMAD "Real Time" Analog Computer
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

Alpine KTP-445A Power Pack

180W RMS Class D Power Pack Series 4 Channel Car Amplifier

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Alpine KTP-445A Power Pack

180W RMS Class D Power Pack Series 4 Channel Car Amplifier

• 45 watts x 4 channel @ 4 ohm
• Total RMS Power: 180 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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Kicker KMA600.6 (48KMA6006)

750W Peak (600W RMS) Class D KMA Series 6-Channel Marine Amplifier

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Kicker KMA600.6 (48KMA6006)

750W Peak (600W RMS) Class D KMA Series 6-Channel Marine Amplifier

• 50 watts x 6 channel @ 4 ohm
• 100 watts x 6 channel @ 2 ohm
• Bridged: 200 watts x 3 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 6-Channel Amplifier

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• 50 watts x 6 channel @ 4 ohm
• 100 watts x 6 channel @ 2 ohm
• Bridged: 200 watts x 3 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 6-Channel Amplifier

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Deaf Bonce MFA 4.320

1920W RMS Class D Machete Series 4 Channel Car Amplifier

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Deaf Bonce MFA 4.320

1920W RMS Class D Machete Series 4 Channel Car Amplifier

• 320 watts x 4 channel @ 4 ohm
• 480 watts x 4 channel @ 2 ohm
• Bridged: 960 watts x 2 channel @ 4 ohm
• Total RMS Power: 1920 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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Hifonics HAC-2000.4D Colossus Pro

2000W Peak Class D Colossus Pro Series 4 Channel Car Amplifier

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Hifonics HAC-2000.4D Colossus Pro

2000W Peak Class D Colossus Pro Series 4 Channel Car Amplifier

• 175 watts x 4 channel @ 4 ohm
• 300 watts x 4 channel @ 2 ohm
• 500 watts x 4 channel @ 1 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Class D 1 ohm Stable 4-Channel Amplifier

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• 175 watts x 4 channel @ 4 ohm
• 300 watts x 4 channel @ 2 ohm
• 500 watts x 4 channel @ 1 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Class D 1 ohm Stable 4-Channel Amplifier

Rockford Fosgate Prime R2 R2-750X5

750W RMS Class D Prime Series 5 Channel Car Amplifier

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Rockford Fosgate Prime R2 R2-750X5

750W RMS Class D Prime Series 5 Channel Car Amplifier

• 50 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 100 watts x 4 channel + 350 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: 750 watts
• Class D 2 ohm Stable 5-Channel Amplifier

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Kenwood KAC-M5024BT

600W Peak (300W RMS) Class D M Series 4-Channel Marine and Powersports Amplifier with Bluetooth

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Kenwood KAC-M5024BT

600W Peak (300W RMS) Class D M Series 4-Channel Marine and Powersports Amplifier with Bluetooth

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

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Rockford Fosgate Power T1000-4AD

1000W RMS Class AD Power Series 4 Channel Car Amplifier

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Rockford Fosgate Power T1000-4AD

1000W RMS Class AD Power Series 4 Channel Car Amplifier

• 250 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 AD 1 ohm Stable 4-Channel Amplifier

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Kicker KXMA800.8 (48KXMA8008)

1200W Peak (800W RMS) Class D KXM Series 8-Channel Marine Amplifier

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Kicker KXMA800.8 (48KXMA8008)

1200W Peak (800W RMS) Class D KXM Series 8-Channel Marine Amplifier

• 50 watts x 8 channel @ 4 ohm
• 100 watts x 8 channel @ 2 ohm
• Bridged: 200 watts x 4 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 8-Channel Amplifier

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List price $819.99
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• 50 watts x 8 channel @ 4 ohm
• 100 watts x 8 channel @ 2 ohm
• Bridged: 200 watts x 4 channel @ 4 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 8-Channel Amplifier

Limited time!

Kicker KMA600.4 (48KMA6004)

725W Peak (600W RMS) Class D KM Series 4-Channel Marine Amplifier

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Kicker KMA600.4 (48KMA6004)

725W Peak (600W RMS) Class D KM Series 4-Channel Marine Amplifier

• 75 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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List price $379.99
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-26% $279.96

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• 75 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

Diamond Audio MICRO4V2

600W RMS Class D MicroV2 Series 4-Channel Compact Amplifier with Bluetooth

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Diamond Audio MICRO4V2

600W RMS Class D MicroV2 Series 4-Channel Compact Amplifier with Bluetooth

• 80 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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Rockford Fosgate Punch P400X4 with Amplifier Wiring Kit

400W Punch Series 4-Channel Stereo Class AB Car Power Amplifier (P400X.4)

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Rockford Fosgate Punch P400X4 with Amplifier Wiring Kit

400W Punch Series 4-Channel Stereo Class AB Car Power Amplifier (P400X.4)

• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS x 2 @ 4 ohm, Bridged
• Built In NOMAD "Real Time" Analog Computer
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

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• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS x 2 @ 4 ohm, Bridged
• Built In NOMAD "Real Time" Analog Computer
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• MESHA3 Reduces MOSFET Temperatures for Improved Durability

Rockford Fosgate Prime R2 R2-300X4

300W RMS Class D Prime Series 4 Channel Car Amplifier

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Rockford Fosgate Prime R2 R2-300X4

300W RMS Class D Prime 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
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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DS18 SXE-1200.4/RD

1200W Peak (400W RMS) Class AB SXE Series 4 Channel Full Range Car Amplifier

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DS18 SXE-1200.4/RD

1200W Peak (400W RMS) Class AB SXE Series 4 Channel Full Range Car Amplifier

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

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NVX XKIT44

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JBL Club A5055 (AMPCBA5055AM) (Open Box, Great)

780W RMS Class AB/D Club Series Compact 5-Channel Amplifier with Bass Remote

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JBL Club A5055 (AMPCBA5055AM) (Open Box, Great)

780W RMS Class AB/D Club Series Compact 5-Channel Amplifier with Bass Remote

• 50 watts x 4 channel + 320 watts x 1 channel @ 4 ohm
• 75 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• 700 watts x 1 channel @ 1 ohm (subwoofer output)
• Bridged: 150 watts x 2 channel @ 4 ohm
• Total RMS Power: 780 watts
• Class AB / D 2 ohm Stable 5-Channel Amplifier

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• 50 watts x 4 channel + 320 watts x 1 channel @ 4 ohm
• 75 watts x 4 channel + 500 watts x 1 channel @ 2 ohm
• 700 watts x 1 channel @ 1 ohm (subwoofer output)
• Bridged: 150 watts x 2 channel @ 4 ohm
• Total RMS Power: 780 watts
• Class AB / D 2 ohm Stable 5-Channel Amplifier

JBL DSP4086 (DSP4086AM)

1000W Peak 480W RMS Class D 8-Channel Compact Car Amplifier with Digital Signal Processor

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JBL DSP4086 (DSP4086AM)

1000W Peak 480W RMS Class D 8-Channel Compact Car Amplifier with Digital Signal Processor

• 40 watts x 8 channel @ 4 ohm
• 60 watts x 8 channel @ 2 ohm
• Total RMS Power: 320 watts
• Class D 2 ohm Stable 8-Channel Amplifier

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Crunch GP-1500.4

1500W RMS Class AB Ground Pounder Series 4 Channel Car Amplifier

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Crunch GP-1500.4

1500W RMS Class AB Ground Pounder Series 4 Channel Car Amplifier

• 185 watts x 4 channel @ 4 ohm
• 375 watts x 4 channel @ 2 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Total RMS Power: 1500 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

Save 30% off an NVX XKIT44 Amp Kit at Checkout!
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• 185 watts x 4 channel @ 4 ohm
• 375 watts x 4 channel @ 2 ohm
• Bridged: 750 watts x 2 channel @ 4 ohm
• Total RMS Power: 1500 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier

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    FAQ for Multi-channel Amplifiers for Adding Speakers in 2007 STS

    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 2007 Cadillac STS?

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