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2003 Kia Optima

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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 2003 Kia Optima

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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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.
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.
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.
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.
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.

Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
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MTX TN8005 (TN800.5) with NVX 4 Gauge Amp Kit

800W RMS Class D Terminator Series 5-Channel Full Range Amplifier with Remote Bass Control

TN8005_XKIT46 big
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MTX TN8005 (TN800.5) with NVX 4 Gauge Amp Kit

800W RMS Class D Terminator Series 5-Channel Full Range Amplifier with Remote Bass Control

• 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: 150 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 5-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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-19% $549.95

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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: 150 watts x 2 channel @ 4 ohm + 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 800 watts
• Class D 2 ohm Stable 5-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

AudioControl ACX-650.5 with NVX 8 Gauge Amp Kit

150W RMS ACX Series Class-D 5-Channel Marine Amplifier

ACX6505_XKIT86 big
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AudioControl ACX-650.5 with NVX 8 Gauge Amp Kit

150W RMS ACX Series Class-D 5-Channel Marine Amplifier

• 50 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 75 watts x 4 channel + 350 watts x 1 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm + 350 watts x 1 channel @ 2 ohm
• Total RMS Power: 650 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 50 watts x 4 channel + 200 watts x 1 channel @ 4 ohm
• 75 watts x 4 channel + 350 watts x 1 channel @ 2 ohm
• Bridged: 150 watts x 2 channel @ 4 ohm + 350 watts x 1 channel @ 2 ohm
• Total RMS Power: 650 watts
• Class D 2 ohm Stable 5-Channel Amplifier
• Includes Amplifier Wiring Kit

NVX - Worth the Envy - Direct to Consumer Car Audio

DS18 NXL-M4 (Hydro) with NVX 4 Gauge Amp Kit

1800W Peak Class D HYDRO Series 4-Channel Full Range Marine and Powersports Amplifier

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DS18 NXL-M4 (Hydro) with NVX 4 Gauge Amp Kit

1800W Peak Class D HYDRO Series 4-Channel Full Range Marine and Powersports Amplifier

• 150 watts x 4 channel @ 4 ohm
• 230 watts x 4 channel @ 2 ohm
• Bridged: 440 watts x 2 channel @ 4 ohm
• Total Peak Power: 1800 watts
• IPX5 waterproof rating
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 150 watts x 4 channel @ 4 ohm
• 230 watts x 4 channel @ 2 ohm
• Bridged: 440 watts x 2 channel @ 4 ohm
• Total Peak Power: 1800 watts
• IPX5 waterproof rating
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

Deaf Bonce Apocalypse ASA 2000.2 with NVX 1/0 Gauge Amp Kit

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

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Deaf Bonce Apocalypse ASA 2000.2 with NVX 1/0 Gauge Amp Kit

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

• 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
• Includes Amplifier Wiring Kit
• Class D 1 ohm Stable 2-Channel-Channel Amplifier

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• 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
• Includes Amplifier Wiring Kit
• Class D 1 ohm Stable 2-Channel-Channel Amplifier

Hertz SP 4.900 with NVX 4 Gauge Amp Kit

900W RMS SPL Show Series Class-D 4-channel Amplifier

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Hertz SP 4.900 with NVX 4 Gauge Amp Kit

900W RMS SPL Show Series Class-D 4-channel Amplifier

• 160 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 900 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 160 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 900 watts
• CEA-2006 Compliant
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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Rockford Fosgate P500X2 with Amplifier Wiring Kit

500W RMS 2-Channel Amplifier (P500X.2) with NVX 8 Gauge Amplifier Wiring Kit

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Rockford Fosgate P500X2 with Amplifier Wiring Kit

500W RMS 2-Channel Amplifier (P500X.2) with NVX 8 Gauge Amplifier Wiring Kit

• 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

Wet Sounds HTX-2 + 30% Off High Quality NVX Amp Kit

600W RMS 2-Channel HTX Series Class D Full-Range Marine Amplifier (WetSounds)

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Wet Sounds HTX-2 + 30% Off High Quality NVX Amp Kit

600W RMS 2-Channel HTX Series Class D Full-Range Marine Amplifier (WetSounds)

• 150 Watts RMS x 2 @ 4 ohm
• 300 Watts RMS x 2 @ 2 ohm
• 600 Watts RMS x 1 @ 4 ohm, Bridged
• Total Peak Power: 900 Watts RMS
• CEA-2006 Compliant
• Removable crossover/level control cover
• Conformal coated PCB boards
• Mono or 2 channel operation

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• 150 Watts RMS x 2 @ 4 ohm
• 300 Watts RMS x 2 @ 2 ohm
• 600 Watts RMS x 1 @ 4 ohm, Bridged
• Total Peak Power: 900 Watts RMS
• CEA-2006 Compliant
• Removable crossover/level control cover
• Conformal coated PCB boards
• Mono or 2 channel operation

Rockford Fosgate M2-300X4 with Amplifier Wiring Kit

300 Watt 4-channel marine amplifier

M2-300X4, XKIT44 big
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Rockford Fosgate M2-300X4 with Amplifier Wiring Kit

300 Watt 4-channel marine amplifier

• 50 Watts x 4 @ 4 ohm<
• 75 Watts x 4 @ 2 ohm
• 150 Watts x 2 @ 4 ohm Bridged/Mono
• 4-Channel Marine Amplifier
• Top Mounted Control Panel
• 2/4 channel input switch

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• 50 Watts x 4 @ 4 ohm<
• 75 Watts x 4 @ 2 ohm
• 150 Watts x 2 @ 4 ohm Bridged/Mono
• 4-Channel Marine Amplifier
• Top Mounted Control Panel
• 2/4 channel input switch

Rockford Fosgate R2-300X4 with NVX 4 Gauge Amp Kit

300W RMS Prime Series Class D 4-Channel Amplifier

R2300X4_XKIT44 big
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Rockford Fosgate R2-300X4 with NVX 4 Gauge Amp Kit

300W RMS Prime Series Class D 4-Channel 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
• Includes Amplifier Wiring Kit

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• 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
• Includes Amplifier Wiring Kit

Alpine KTP-445A with Belva 8 Gauge Amp Kit

Plug and Play Head Unit Power Pack for Use w/ 2005-Up Alpine Head Units with a Black Power Harness

KTP-445A, BAK84 big
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Alpine KTP-445A with Belva 8 Gauge Amp Kit

Plug and Play Head Unit Power Pack for Use w/ 2005-Up Alpine Head Units with a Black Power Harness

• Power Pack 4-Channel Class D for Select Alpine In-Dash Receivers
• 45W x 4 Chan. @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

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• Power Pack 4-Channel Class D for Select Alpine In-Dash Receivers
• 45W x 4 Chan. @ 4 Ohm
• Adjustable Gain Switch
• Plug-and-Play
• CEA-2006 Compliant

Alpine KTP-445A with NVX 8 Gauge Amp Kit

180W RMS Power Pack Series Class D 4-Channel Compact Amplifier

KTP445A_XKIT84 big
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Alpine KTP-445A with NVX 8 Gauge Amp Kit

180W RMS Power Pack Series Class D 4-Channel Compact Amplifier

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

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

JBL Club A754 with NVX 8 Gauge Amp Kit

400W RMS Club Series Class-H Compact 4-Channel Amplifier

CLUBA754_XKIT84 big
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JBL Club A754 with NVX 8 Gauge Amp Kit

400W RMS Club Series Class-H Compact 4-Channel Amplifier

• 75 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 H 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 75 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 H 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Infinity Reference 3004A (AMPRF3004AAM) + Belva BAK84 8 Gauge Amp Wiring Kit

Reference Series 4-channel Car Amplifier

Reference 3004A, BAK84 big
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Infinity Reference 3004A (AMPRF3004AAM) + Belva BAK84 8 Gauge Amp Wiring Kit

Reference Series 4-channel Car Amplifier

• 75 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• Low-profile chassis and a small overall footprint
• On-board circuitry protects the Reference 3004A from shorts, high-temperature, overvoltage and undervoltage.
• Dimensions: 12-5/8" W x 7" D x 2-3/16" H
• Includes Belva BAK84 8 Gauge Amp Wiring Kit

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• 75 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• Low-profile chassis and a small overall footprint
• On-board circuitry protects the Reference 3004A from shorts, high-temperature, overvoltage and undervoltage.
• Dimensions: 12-5/8" W x 7" D x 2-3/16" H
• Includes Belva BAK84 8 Gauge Amp Wiring Kit

Cerwin Vega B52 with Belva 4 Gauge Amp Kit

1000W Peak Bomber Series 2-Channel Class D Amplifier

B52, BAK42 big
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Cerwin Vega B52 with Belva 4 Gauge Amp Kit

1000W Peak Bomber Series 2-Channel Class D Amplifier

• RMS: 200 Watts x 2 @ 4 ohm, 250 Watts x 2 @ 2 ohm, Bridged: 500 Watts x 1 @ 4 ohm
• Total Peak Power: 1000 Watts
• Class D IR Chipset with DirectFET Power Mosfet Output
• Wired remote bass level control included
• Ultra Compact High-Density Aluminum Alloy Chassis
• Dimensions: 4.02" W x 6.61" L x 1.40" H

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• RMS: 200 Watts x 2 @ 4 ohm, 250 Watts x 2 @ 2 ohm, Bridged: 500 Watts x 1 @ 4 ohm
• Total Peak Power: 1000 Watts
• Class D IR Chipset with DirectFET Power Mosfet Output
• Wired remote bass level control included
• Ultra Compact High-Density Aluminum Alloy Chassis
• Dimensions: 4.02" W x 6.61" L x 1.40" H

Alpine S2-A36F with Belva 8 Gauge Amp Kit

360W RMS S-Series Class D 4-Channel Amplifier

S2-A36F, BAK84 big
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Alpine S2-A36F with Belva 8 Gauge Amp Kit

360W RMS S-Series Class D 4-Channel 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
• CEA-2006 Compliant
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

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• 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
• CEA-2006 Compliant
• Class D 2 ohm Stable 4-Channel-Channel Amplifier

DS18 SXE-3000.4D/BK (Black) with Belva 4 Gauge Amp Kit

3000W Peak (1000W RMS) Class D SXE Series 4-Channel Car Amplifier

SXE30004DBK_BAK44 big
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DS18 SXE-3000.4D/BK (Black) with Belva 4 Gauge Amp Kit

3000W Peak (1000W RMS) Class D SXE Series 4-Channel Car Amplifier

• 200 watts x 4 channel @ 4 ohm
• 320 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1,000 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier (Black)
• Includes Amplifier Wiring Kit

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• 200 watts x 4 channel @ 4 ohm
• 320 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1,000 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier (Black)
• Includes Amplifier Wiring Kit

Diamond Audio HX600.4 with NVX 8 Gauge Amp Kit

1000W RMS HEX Series 4-Channel Class-D Amplifier

HX6004_XKIT84 big
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Diamond Audio HX600.4 with NVX 8 Gauge Amp Kit

1000W RMS HEX Series 4-Channel Class-D Amplifier

• 160 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 160 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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Rockford Fosgate PBR400X4D with NVX 8 Gauge Amp Kit

400W RMS Punch Series Class-D 4-Channel Amplifier

PBR400X4D_XKIT84 big
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Rockford Fosgate PBR400X4D with NVX 8 Gauge Amp Kit

400W RMS Punch Series Class-D 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
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 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
• Includes Amplifier Wiring Kit

Kenwood KAC-D3104 with Amplifier Wiring Kit

Class D 4-Channel Amplifier (600 Watts Peak Power)

KAC-D3104, BAK84 big
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Kenwood KAC-D3104 with Amplifier Wiring Kit

Class D 4-Channel Amplifier (600 Watts Peak Power)

• 4 ohm: 50 watts x 4 chan.
• 2 ohm: 75 watts x 4 chan.
• Total Peak Power: 600 Watts
• Speaker Level Input
• Signal Sensing Turn-On
• Variable Low Pass/High Pass Filter
• Includes Amplifier Wiring Kit

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• 4 ohm: 50 watts x 4 chan.
• 2 ohm: 75 watts x 4 chan.
• Total Peak Power: 600 Watts
• Speaker Level Input
• Signal Sensing Turn-On
• Variable Low Pass/High Pass Filter
• Includes Amplifier Wiring Kit

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Rockford Fosgate Punch P300X2 with Belva 4 Gauge Amp Kit

300W RMS Punch Series 2-Channel Class AB Car Power Amplifier

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Rockford Fosgate Punch P300X2 with Belva 4 Gauge Amp Kit

300W RMS Punch Series 2-Channel Class AB Car Power Amplifier

• 100 watts x 2 channel @ 4 ohm
• 150 watts x 2 channel @ 2 ohm
• Bridged: 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class A/B 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 100 watts x 2 channel @ 4 ohm
• 150 watts x 2 channel @ 2 ohm
• Bridged: 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class A/B 2 ohm Stable 2-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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    FAQ for Multi-channel Amplifiers for Adding Speakers in 2003 Optima

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