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1998 BMW 323is

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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 1998 BMW 323is

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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Cerwin Vega B54 (Like New (Open Box))

1200W Peak (600W RMS) Class D Stealth Bomber Series 4 Channel Car Amplifier

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Cerwin Vega B54 (Like New (Open Box))

1200W Peak (600W RMS) Class D Stealth Bomber Series 4 Channel Car Amplifier

• 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

Save 30% off an NVX XKIT84 Amp Kit at Checkout!
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Eligible items

Shop items below for 30% off up to $300 discount on Save 30% off an NVX Amp Kit!

NVX XKIT84

NVX XKIT84

$79.99

$55.99

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Rockford Fosgate M2-300X4 + FREE $75 Gift Card

300 Watt 4-channel marine amplifier

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Rockford Fosgate M2-300X4 + FREE $75 Gift Card

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

Belva BXA5002 (Open Box, Good)

500W Peak BX-Series Class A/B 2-Channel Car Audio Amplifier with Bass Remote

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Belva BXA5002 (Open Box, Good)

500W Peak BX-Series Class A/B 2-Channel Car Audio Amplifier with Bass Remote

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

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Rockford Fosgate Power T400X4ad with Amplifier Wiring Kit

Compact 4-channel amplifier (4 x 100 Watts RMS @ 4 ohms)

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Rockford Fosgate Power T400X4ad with Amplifier Wiring Kit

Compact 4-channel amplifier (4 x 100 Watts RMS @ 4 ohms)

• 4 ohm: 100 watts x 4 chan.
• 2 ohm: 100 watts x 4 chan.
• Bridged, 4 ohm: 200 watts x 2 chan.
• Total Power: 400 Watts
• CEA-2006 Compliant
• C.L.E.A.N. Technology
• Fan Cooled

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• 4 ohm: 100 watts x 4 chan.
• 2 ohm: 100 watts x 4 chan.
• Bridged, 4 ohm: 200 watts x 2 chan.
• Total Power: 400 Watts
• CEA-2006 Compliant
• C.L.E.A.N. Technology
• Fan Cooled

NVX NBA201 with Amplifier Wiring Kit

1400W Peak (700W) RMS N-Series Class A/B 2-Channel Amplifier

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NVX NBA201 with Amplifier Wiring Kit

1400W Peak (700W) RMS N-Series Class A/B 2-Channel Amplifier

• 200 watts x 2 channel @ 4 ohm
• 350 watts x 2 channel @ 2 ohm
• Bridged: 1400 watts x 1 channel @ 4 ohm
• Total RMS Power: 700 watts
• CEA-2006 Compliant
• Includes Amplifier Wiring Kit

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• 200 watts x 2 channel @ 4 ohm
• 350 watts x 2 channel @ 2 ohm
• Bridged: 1400 watts x 1 channel @ 4 ohm
• Total RMS Power: 700 watts
• CEA-2006 Compliant
• Includes Amplifier Wiring Kit

NVX NBA201 Amplifier + NVX 4 Gauge Premium Amp Wiring Kit

700W Total RMS N-Series Class-AB 2-Channel Amplifier Package (Includes Amplifier and Amp Wiring kit)

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NVX NBA201 Amplifier + NVX 4 Gauge Premium Amp Wiring Kit

700W Total RMS N-Series Class-AB 2-Channel Amplifier Package (Includes Amplifier and Amp Wiring kit)

• 200 watts x 2 channel @ 4 ohm
• 350 watts x 2 channel @ 2 ohm
• Bridged: 1400 watts x 1 channel @ 4 ohm
• Total RMS Power: 700 watts
• CEA-2006 Compliant

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132
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• 200 watts x 2 channel @ 4 ohm
• 350 watts x 2 channel @ 2 ohm
• Bridged: 1400 watts x 1 channel @ 4 ohm
• Total RMS Power: 700 watts
• CEA-2006 Compliant

NVX NDA6004 with Amp Wiring Kit

1200W Peak (600W RMS) N-Series Class-D 4-Channel Amplifier + NVX XKIT44 4 Gauge 4-Channel Premium Amp Wiring Kit

NDA6004_XKIT44 big
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NVX NDA6004 with Amp Wiring Kit

1200W Peak (600W RMS) N-Series Class-D 4-Channel Amplifier + NVX XKIT44 4 Gauge 4-Channel Premium Amp Wiring Kit

• 100 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes 4 Gauge Amp Wiring Kit

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94
List price $371.98
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• 100 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes 4 Gauge Amp Wiring Kit

DS18 SXE-1200.4/RD (Red) with Belva 4 Gauge Amp Kit

1200W Peak (400W RMS) Class AB SXE Series 4-channel Car Amplifier

SXE12004RD_BAK44 big
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DS18 SXE-1200.4/RD (Red) with Belva 4 Gauge Amp Kit

1200W Peak (400W RMS) Class AB SXE Series 4-channel Car Amplifier

• 60 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 400 watts
• Class A/B 2 ohm Stable 4-Channel-Channel Amplifier (Red)
• Includes Amplifier Wiring Kit

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List price $235.94
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• 60 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: @ 4 ohm
• Total RMS Power: 400 watts
• Class A/B 2 ohm Stable 4-Channel-Channel Amplifier (Red)
• Includes Amplifier Wiring Kit

Hifonics HCM-400.4D with Belva 4 Gauge Amp Kit

400W Peak Colossus Mini Series Class-D 4-Channel Amplifier with Bass Remote

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Hifonics HCM-400.4D with Belva 4 Gauge Amp Kit

400W Peak Colossus Mini Series Class-D 4-Channel Amplifier with Bass Remote

• 4 x 50 @ 4 ohm
• 4 x 100 @ 2 ohm
• Bridged: 2 x 200 @ 4 ohm
• Total Peak Power: 400W
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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61
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• 4 x 50 @ 4 ohm
• 4 x 100 @ 2 ohm
• Bridged: 2 x 200 @ 4 ohm
• Total Peak Power: 400W
• Class D 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Infinity Reference 3004A with NVX 8 Gauge Amp Kit

400W RMS Reference Series Class-H 4-Channel Amplifier

REFERENCE3004A_XKIT84 big
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Infinity Reference 3004A with NVX 8 Gauge Amp Kit

400W RMS Reference Series Class-H 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

Pioneer GM-DX874 with NVX 4 Gauge Amp Kit

1200W Peak (600W RMS) GM Series Class-FD 4-Channel Amplifier with Remote Bass Knob

GMDX874_XKIT44 big
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Pioneer GM-DX874 with NVX 4 Gauge Amp Kit

1200W Peak (600W RMS) GM Series Class-FD 4-Channel Amplifier with Remote Bass Knob

• 100 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 1 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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94
List price $455.99
-38% $284.99

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• 100 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 1 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Infinity Reference 7005A (AMPRF7005AAM) + Free NVX Premium Amp Kit

Reference Series High Performance Class AB+D 5-Channel Amplifier + XKIT46

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Infinity Reference 7005A (AMPRF7005AAM) + Free NVX Premium Amp Kit

Reference Series High Performance Class AB+D 5-Channel Amplifier + XKIT46

• 5-Channel Amplifier
• Phase Switch on Sub Channel
• Full Board Protection
• Variable High and Low Pass Filter
• Class AB + D Technology

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47
List price $709.94
-31% $489.95
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• 5-Channel Amplifier
• Phase Switch on Sub Channel
• Full Board Protection
• Variable High and Low Pass Filter
• Class AB + D Technology

Crunch SA-1100.2 with Belva 4 Gauge Amp Kit

1100 Watt Smash Series Class A/B 2 Channel Amplifier

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Crunch SA-1100.2 with Belva 4 Gauge Amp Kit

1100 Watt Smash Series Class A/B 2 Channel Amplifier

• RMS Power: 30W x 2 @ 4 ohm, 35W x 2 @ 2 ohm
• Total Peak Power: 1100W
• CEA-2006 Compliant/Preamp Outputs/LPF
• Frequency Response: 10Hz-22kHz
• Includes Amplifier Wiring Kit

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• RMS Power: 30W x 2 @ 4 ohm, 35W x 2 @ 2 ohm
• Total Peak Power: 1100W
• CEA-2006 Compliant/Preamp Outputs/LPF
• Frequency Response: 10Hz-22kHz
• Includes Amplifier Wiring Kit

Rockford Fosgate R2-750X5 + FREE $100 Gift Card

350W RMS 5-Channel Prime Series Full Range Amplifier With Gift Card

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Rockford Fosgate R2-750X5 + FREE $100 Gift Card

350W RMS 5-Channel Prime Series Full Range Amplifier With Gift Card

• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 600 Watts
• CEA-2006 Compliant
• Balanced Differential Inputs with RCA Pass Through Outputs
• Variable Infrasonic Filter
• ull Range Class D

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List price $639.99
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• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 600 Watts
• CEA-2006 Compliant
• Balanced Differential Inputs with RCA Pass Through Outputs
• Variable Infrasonic Filter
• ull Range Class D

JL Audio MV1000/5i - Open Box, Great

MVi Series Marine 5-Channel Class-D Amplifier

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JL Audio MV1000/5i - Open Box, Great

MVi Series Marine 5-Channel Class-D Amplifier

• RMS: 75W x 4 + 400W @ 4 ohm / 100W x 4 + 600W @ 2 ohm
• Contains the 2nd-Gen NexD2™ Switching Amplifier Technology
• Latest generation of DirectFET® MOSFET Output Devices
• Cast alloy chassis with marine-grade speaker connections and keyhole mounting design

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List price $1549.99
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• RMS: 75W x 4 + 400W @ 4 ohm / 100W x 4 + 600W @ 2 ohm
• Contains the 2nd-Gen NexD2™ Switching Amplifier Technology
• Latest generation of DirectFET® MOSFET Output Devices
• Cast alloy chassis with marine-grade speaker connections and keyhole mounting design

Rockford Fosgate Punch PM500X2 + FREE $100 Gift Card

500W Punch Series Class A/B 2-Channel Marine Amplifier

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Rockford Fosgate Punch PM500X2 + FREE $100 Gift Card

500W Punch Series Class A/B 2-Channel Marine Amplifier

• 150 watts RMS x 2 chan. @ 4 ohm
• 250 watts RMS x 2 chan. @ 2 ohm
• 500 watts RMS x 1 chan. @ 4 ohm Bridged
• CEA-2006 Compliant
• Features C.L.E.A.N. Set-up
• Protected against Dust, UV, & Corrosion
• Marine grade two part epoxy coating on circuit boards

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• 150 watts RMS x 2 chan. @ 4 ohm
• 250 watts RMS x 2 chan. @ 2 ohm
• 500 watts RMS x 1 chan. @ 4 ohm Bridged
• CEA-2006 Compliant
• Features C.L.E.A.N. Set-up
• Protected against Dust, UV, & Corrosion
• Marine grade two part epoxy coating on circuit boards

Kicker 46CXA6605 with Amplifier Wiring Kit

360W RMS CX-Series Class-D 5-Channel Amplifier

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Kicker 46CXA6605 with Amplifier Wiring Kit

360W RMS CX-Series Class-D 5-Channel Amplifier

• 75 Watts RMS x 4 @ 2 ohm
• 2 ohm: 300 watts x 1 chan. Subwoofer Channel
• Total Peak Power: 600 Watts
• Preamp RCA outputs to daisy chain multiple amps
• Variable Low/High-Pass Crossover: 50 - 200Hz 12dB/octave
• Variable Bass Boost: 0 to +12 dB bass boost at 40 Hz
• Includes Amplifier Wiring Kit

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• 75 Watts RMS x 4 @ 2 ohm
• 2 ohm: 300 watts x 1 chan. Subwoofer Channel
• Total Peak Power: 600 Watts
• Preamp RCA outputs to daisy chain multiple amps
• Variable Low/High-Pass Crossover: 50 - 200Hz 12dB/octave
• Variable Bass Boost: 0 to +12 dB bass boost at 40 Hz
• Includes Amplifier Wiring Kit

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Rockford Fosgate Punch P600X4 + NVX XFLOC4 Line-Output-Converter + Amp Kit

600W 4-Channel Amplifier + NVX 4-Channel L.O.C. + 4 Gauge Amp Kit

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Rockford Fosgate Punch P600X4 + NVX XFLOC4 Line-Output-Converter + Amp Kit

600W 4-Channel Amplifier + NVX 4-Channel L.O.C. + 4 Gauge Amp Kit

• 75W x 4-Chan. @ 4 ohm
• 150W x 4-Chan. @ 2 ohm
• 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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Universal Icon Universal – fits most vehicles.

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70
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-17% $510.37

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• 75W x 4-Chan. @ 4 ohm
• 150W x 4-Chan. @ 2 ohm
• 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 Punch PM600X4 + NVX XKIT44

600W 4-Channel Punch Series Class AB Marine Amplifier + NVX 4 Gauge 4-Channel Amp Kit

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Rockford Fosgate Punch PM600X4 + NVX XKIT44

600W 4-Channel Punch Series Class AB Marine Amplifier + NVX 4 Gauge 4-Channel Amp Kit

• RMS: 75W x 4 @ 4 ohm, 150W x 4 @ 2 ohm, Bridged 300W x 2 @ 4ohm
• CEA-2006 Compliant
• Features C.L.E.A.N. Set-up
• Protected against Dust, UV, & Corrosion
• Marine grade two part epoxy coating on circuit boards

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Universal Icon Universal – fits most vehicles.

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80
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-12% $705.45

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• RMS: 75W x 4 @ 4 ohm, 150W x 4 @ 2 ohm, Bridged 300W x 2 @ 4ohm
• CEA-2006 Compliant
• Features C.L.E.A.N. Set-up
• Protected against Dust, UV, & Corrosion
• Marine grade two part epoxy coating on circuit boards

DS18 ION1600.4D with NVX 4 Gauge Amp Kit

4800W Peak (1600W RMS) Class D ION Series 4 Channel Car Amplifier

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DS18 ION1600.4D with NVX 4 Gauge Amp Kit

4800W Peak (1600W RMS) Class D ION Series 4 Channel Car Amplifier

• 240 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• Bridged: 800 watts x 2 channel @ 4 ohm
• Total RMS Power: 1600 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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Universal Icon Universal – fits most vehicles.

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81
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-12% $505.36

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• 240 watts x 4 channel @ 4 ohm
• 400 watts x 4 channel @ 2 ohm
• Bridged: 800 watts x 2 channel @ 4 ohm
• Total RMS Power: 1600 watts
• Class D 2 ohm Stable 4-Channel-Channel Amplifier
• Includes Amplifier Wiring Kit

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    FAQ for Multi-channel Amplifiers for Adding Speakers in 1998 323is

    Q: Can I upgrade or change the Multi-channel Amplifiers for Adding Speakers in 1998 BMW 323is?

    A: Yes this page includes all the best Multi-channel Amplifiers for Adding Speakers that work in your 323is.

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