The best best car amplifier under $200 is the Taramps TS 400×4, the only model here that delivers 400 watts RMS across four channels while staying compact enough to stash under a seat. It's built for anyone who wants clean, distortion-free power for a full-range system without blowing their budget.
Want deeper bass instead? The BOSS Audio Systems R1100M monoblock gets you there with 1100 watts of rated power, as long as you pair it with the right subwoofer. It trades multi-channel flexibility for subwoofer punch.
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This guide covers what to look for in power ratings, channels, and amplifier class so you don't waste money on over-hyped specs. It also tells you who should skip this price tier entirely (you'll find that section at the end).
Everything below comes from current Amazon product data, manufacturer specifications, and verified buyer feedback, not from hands-on lab testing.
Quick Answer: The Best Car Amplifier under $200
The Taramps TS 400×4 is the best overall pick for under $200 because it delivers genuine 400 watts RMS in a 4-channel Class D design that fits almost anywhere.
- Taramps TS 400×4 (Best Full-Range Powerhouse): True 400W RMS across four channels with bridged capability.
- BOSS Audio Systems R1100M (Best Monoblock for Subs): 1100 watts of Class A/B power with a wired remote.
- Pioneer GM-A3702 (Best Brand Reliability): Classic Pioneer sound with automatic signal sensing.
- Pyle PLA2200 (Best Budget 2-Channel): High claimed wattage at a very low entry price.
- Crunch PDX-1000.2 (Best for Flexible Installation): Slim profile with adjustable crossover and bass boost.
- Crunch Ground Pounder GP-1500.2 (Best Raw Power per Dollar): Highest advertised wattage for extreme bass builds.
- AUDIOZERONE ZE1000.1 (Best Budget Monoblock): 2000W peak with Class D efficiency and MOSFET supply.
- ORION CBA2000.1D (Best Budget with Bass Knob): Includes a remote bass control and stable down to 1 ohm.
Thinking about the wrong amplifier for your needs instead? Jump to Who Should NOT Buy below before you spend anything.
Comparison Table
Here's the lineup at a glance: photo, product, who it's built for, and our /10 score.
Scroll sideways on small screens to see every column.
Taramps TS 400×4 400 watts RMS: Best Full-Range Powerhouse for Clean Sound
Taramps TS 400×4 400 watts RMS: Best Full-Range Powerhouse for Clean Sound
#1
TarampsClass D, 4-channel
8.7OUT OF 10
Power Output9.2
Build Quality8.5
Ease of Use8.8
Owner Verdict8.2
This is the only amplifier on this list that delivers a true 400 watts RMS across four channels at under $200. Most budget “400W” amps only hit that number at 2 ohms or as a peak value. Taramps rates this at 4 ohms per channel, which means you get clean, continuous power without distortion. The Class D design also makes it tiny (about the size of a paperback) and very efficient, so it barely heats up even during long drives.
Installation is straightforward thanks to the RCA line-level inputs and built-in crossovers. You can bridge channels to run a two-channel setup plus a sub, or keep all four for a full-range system. Verified buyer feedback often mentions that it drives aftermarket speakers loudly without clipping, even with the factory head unit.
Flaws but not dealbreakers. The included wiring is basic, so you’ll want to buy a proper amp kit. A few owners report that the gain settings are sensitive and require careful adjustment to avoid hum. Also, Taramps is a Brazilian brand with limited US customer support, though most issues are covered by Amazon returns.
Need a monoblock for a dedicated subwoofer setup? The
BOSS R1100M below offers more focused low-end power for the same budget.
⚠Compatibility: This amp needs a 4 AWG power kit for full performance. It doesn’t include a remote bass knob, so adjust gains at the unit.
Pros
- ✓True 400W RMS at 4 ohms – very rare at this price.
- ✓Compact Class D design fits under most seats.
- ✓Bridged channels for flexible speaker/sub combinations.
- ✓Low distortion even at high volume.
Cons
- ✕No wiring kit included – budget an extra $20-30.
- ✕Gain settings are sensitive; easy to introduce noise.
- ✕Limited customer support outside South America.
Channels
4 (bridgable to 2)
RMS Power
400W total (4x100W @ 4Ω)
Dimensions
6.7 x 5.1 x 1.5 in
Best for: Drivers who want to power four speakers with clean, reliable wattage and need a compact amp that disappears under the seat.
BOSS Audio Systems R1100M 1100 Watt: Best Monoblock for Subwoofer Bass
BOSS Audio Systems R1100M 1100 Watt: Best Monoblock for Subwoofer Bass
#2
BOSSMonoblock, Class A/B
8.4OUT OF 10
Power Output8.8
Build Quality8.0
Ease of Use8.5
Owner Verdict8.3
This monoblock is our top pick for anyone adding a single subwoofer to their system. BOSS rates it at 1100 watts max power with 550 watts RMS into a 2-ohm load, which is enough to drive most 12- or 15-inch subs to solid output levels. The Class A/B topology gives it the warm, punchy bass that many enthusiasts prefer over the harsher Class D sound. It also includes a wired remote bass knob so you can adjust the sub level from the driver’s seat without reaching behind the head unit.
Installation is beginner-friendly: the amp has speaker-level inputs, so you can connect it to a factory stereo without needing a line-out converter. The built-in low-pass crossover (50-150 Hz) lets you dial in the exact frequency range for your sub. Verified buyer feedback consistently praises how easy it is to set up and how well it powers a single 12-inch sub in a sealed box.
Flaws but not dealbreakers. The peak power rating is 1100 watts, but real-world RMS output is closer to 550W, so don’t expect competition-level loudness. A few owners note that the chassis can get warm during extended high-volume use, so mount it where air can circulate. Also, the speaker terminals are a bit small for 8 AWG wire, but most kits come with 10 AWG anyway.
If you need a full-range four-channel instead, the
Taramps TS 400×4 above will give you cleaner sound for all your speakers.
⚠Wiring: Use a 8 AWG power kit at minimum. The amp requires a solid ground connection to prevent alternator whine.
Pros
- ✓Wired remote bass knob included for easy tuning.
- ✓Speaker-level inputs work with factory radios.
- ✓Rated 550W RMS at 2 ohms – solid for a single sub.
- ✓Class A/B sound is warm and natural.
Cons
- ✕Heats up under heavy load – needs good ventilation.
- ✕Terminals are small for thicker power wire.
- ✕Peak power claims are optimistic; focus on RMS.
RMS Power
550W @ 2Ω, 330W @ 4Ω
Dimensions
12.6 x 5.5 x 2.1 in
Best for: First-time subwoofer buyers who want an easy installation with a remote bass knob and speaker-level inputs.
Pioneer GM-A3702 500W Max Class AB: Trusted Brand for Clarity and Reliability
Pioneer GM-A3702 500W Max Class AB: Trusted Brand for Clarity and Reliability
#3
Pioneer2-channel, Auto Signal
8.2OUT OF 10
Power Output7.5
Build Quality8.8
Ease of Use8.5
Owner Verdict8.0
Owner Verdict8.0
This is the most reliable brand-name 2-channel amp you’ll find under $200. Pioneer has been making car audio gear for decades, and the GM-A3702 reflects that experience. It delivers 500 watts max power (roughly 55 watts RMS per channel at 4 ohms, or 160W RMS bridged into 4 ohms), which is enough to power a pair of coaxial speakers or a single subwoofer. The automatic signal sensing means it turns on when it detects audio from your head unit, saving you from running a remote wire.
The built-in high-pass and low-pass filters let you dial in the exact frequency range for your speakers or sub. The Class A/B design produces clean, warm sound that works well with factory speaker systems. Verified buyer reviews often mention that this amp pairs perfectly with Pioneer’s own speakers for a seamless upgrade path.
Flaws but not dealbreakers. The power output is lower than many competitors at this price point, so it’s not ideal for driving subwoofers at high volumes. It’s also physically larger than Class D amps, making it harder to mount in tight spaces. A few owners note that the gain knob is unmarked, requiring a multimeter to set precisely.
Need more power for a subwoofer? The
BOSS R1100M above delivers over three times the RMS wattage for the same budget.
⚠Sizing: This amp is 11.8 inches long. Measure your mounting space before ordering, as it won’t fit under some seats.
Pros
- ✓Automatic signal sensing eliminates remote wire run.
- ✓Pioneer build quality with strong brand support.
- ✓Built-in high- and low-pass filters for versatile tuning.
- ✓Bridged mode delivers 160W RMS for a single sub.
Cons
- ✕Modest RMS power compared to budget competitors.
- ✕Larger chassis limits installation locations.
- ✕Unmarked gain knob makes setup less precise.
Channels
2 (bridgable to 1)
RMS Power
55W x 2 @ 4Ω; 160W bridged @ 4Ω
Dimensions
11.8 x 9.4 x 2.2 in
Best for: Buyers who want a trusted brand with automatic turn-on and clean sound for a modest speaker upgrade.
Pyle 2 Channel Car Stereo Amplifier: Cheapest Way to Add Power to Two Speakers
Pyle 2 Channel Car Stereo Amplifier: Cheapest Way to Add Power to Two Speakers
#4
Pyle2-channel, MOSFET
7.8OUT OF 10
Power Output7.0
Build Quality7.5
Ease of Use8.0
Owner Verdict8.5
This is the most affordable way to add real amplification to two speakers. The Pyle PLA2200 claims 1400 watts max power, but the realistic output is around 200 watts RMS total (100W x 2) at 4 ohms. That’s enough to drive a pair of 6×9 or 6.5-inch speakers much louder than a factory head unit can. It includes a built-in crossover and bass boost control, plus gold-plated RCA inputs for better signal transfer.
The MOSFET power supply helps deliver consistent voltage to the amplifier, which reduces distortion at higher volumes. Verified buyer feedback often highlights that this amp gets the job done for a very low price, especially for older cars or temporary setups. The bridgeable design lets you combine both channels into one for a single subwoofer.
Flaws but not dealbreakers. The claimed 1400W peak is heavily inflated, so buyer beware. Some owners report the bass boost adds distortion if turned up past halfway. Also, the chassis is made of thinner metal than pricier amps, so handle it carefully during installation.
If you want more honest power ratings, the
Taramps TS 400×4 above offers true RMS ratings you can trust.
⚠Power: Ignore the peak wattage. Focus on the 100W x 2 RMS figure for realistic performance expectations.
Pros
- ✓Very low price point for a 2-channel MOSFET amp.
- ✓Bridgeable mode for a single subwoofer.
- ✓Gold-plated RCA inputs and outputs.
- ✓Built-in crossover and bass boost.
Cons
- ✕Peak power claims are grossly exaggerated.
- ✕Bass boost can introduce distortion quickly.
- ✕Thin metal chassis feels less durable.
Channels
2 (bridgable to 1)
RMS Power
~100W x 2 @ 4Ω (claimed 700W x 2 peak)
Dimensions
10.2 x 7.5 x 1.8 in
Best for: Budget-first buyers who want to hear a difference over factory speakers without spending much.
Crunch PDX-1000.2 PowerDriveX 1000 Watt 2: Slim Profile for Flexible Installation
Crunch PDX-1000.2 PowerDriveX 1000 Watt 2: Slim Profile for Flexible Installation
#5
Crunch2-channel, Slim
7.5OUT OF 10
Power Output7.0
Build Quality7.8
Ease of Use7.5
Owner Verdict7.6
This 2-channel amp is designed for tight installation spaces where a full-sized amp won’t fit. The Crunch PDX-1000.2 has a slim chassis that measures under 2 inches tall, making it easy to mount under a seat or in a shallow compartment. It claims 1000 watts max power, with a more realistic RMS rating around 150 watts per channel at 4 ohms. That’s enough to drive a pair of mid-range speakers or a small subwoofer in bridge mode.
The blue anodized heatsink looks aggressive and helps with heat dissipation. It includes a variable high-pass/low-pass crossover and a bass boost circuit. Verified buyer feedback notes that this amp works well for powering component speakers in cars with limited space, like trucks and coupes.
Flaws but not dealbreakers. The power output is lower than many similarly priced units, so it’s better for speakers than subs. The bass boost can sound muddy if pushed too far. A few owners mention that the gain knob is unlabeled, requiring trial and error to dial in.
For more power in a similar size, the
Taramps TS 400×4 delivers four channels with higher RMS output in a comparably compact package.
⚠Installation: The slim design means less internal heatsink mass. Ensure adequate airflow around the amp during operation.
Pros
- ✓Slim profile fits in tight spaces under seats.
- ✓Variable high-pass and low-pass crossover.
- ✓Blue anodized heatsink for heat management.
- ✓Bridgeable for a single subwoofer.
Cons
- ✕Modest RMS power; not ideal for heavy bass.
- ✕Bass boost can sound muddy at high settings.
- ✕Unlabeled gain knob requires careful adjustment.
Channels
2 (bridgable to 1)
RMS Power
~150W x 2 @ 4Ω (500W bridged)
Dimensions
11.8 x 5.5 x 1.9 in
Best for: Drivers with limited mounting space who need a slim 2-channel amp for component or coaxial speakers.
Crunch Ground Pounder GP-1500.2 1500 Watt: Max Wattage for Extreme Budget Bass
Crunch Ground Pounder GP-1500.2 1500 Watt: Max Wattage for Extreme Budget Bass
#6
Crunch2-channel, High Power
7.2OUT OF 10
Power Output7.5
Build Quality7.0
Ease of Use7.2
Owner Verdict7.0
This amp offers the highest claimed wattage per dollar in this lineup. The Crunch Ground Pounder GP-1500.2 is a 2-channel amp that advertises 1500 watts max power. Real-world output is around 250 watts RMS per channel at 4 ohms, or about 600 watts RMS bridged into a 4-ohm load. That’s enough to drive a single powerful subwoofer or a pair of high-power speakers. The name “Ground Pounder” is fitting for bass-heavy setups.
It includes a variable low-pass crossover and a bass boost circuit for tuning the low end. The amp uses a Class A/B design, which provides warm sound but is less efficient than Class D. Verified buyer feedback often mentions that this amp can produce impressive bass for the price, especially when paired with a quality subwoofer in a ported box.
Flaws but not dealbreakers. The build quality feels cheaper than other amps at similar prices, with thinner terminal blocks. The peak power rating is highly optimistic, so set your expectations based on RMS figures. Some owners report the amp running hot during extended use, so mounting it with good airflow is essential.
For cleaner power delivery with better thermal management, the
Taramps TS 400×4 uses Class D technology that runs cooler and more efficiently.
⚠Heat: This Class A/B amp runs hot. Mount it in an open area with ventilation, not enclosed under a seat.
Pros
- ✓Highest claimed wattage for the price point.
- ✓Bridged mode delivers solid power for a subwoofer.
- ✓Variable low-pass crossover included.
- ✓Aggressive styling for a custom look.
Cons
- ✕Build quality feels cheaper than rivals.
- ✕Peak power claims are exaggerated.
- ✕Runs hot; needs good ventilation.
Channels
2 (bridgable to 1)
RMS Power
~250W x 2 @ 4Ω (~600W bridged)
Dimensions
13.8 x 6.1 x 2.2 in
Best for: Bass enthusiasts on a tight budget who want maximum advertised power for a single subwoofer setup.
AUDIOZERONE Car Audio Amplifier ZE1000.1 2000W: Value Monoblock for Subwoofers
AUDIOZERONE Car Audio Amplifier ZE1000.1 2000W: Value Monoblock for Subwoofers
#7
AUDIOZERONEMonoblock, Class D
8.0OUT OF 10
Power Output8.2
Build Quality7.8
Ease of Use8.0
Owner Verdict8.0
This monoblock offers Class D efficiency at a very competitive price point. The AUDIOZERONE ZE1000.1 claims 2000 watts max power, but its real RMS output is around 500 watts at 1 ohm, 300 watts at 2 ohms, and 150 watts at 4 ohms. The Class D design means it runs much cooler and draws less current from your electrical system than Class A/B amps, making it a good choice for cars with stock alternators. It includes a low-pass crossover and a MOSFET power supply for stable voltage delivery.
The amp is stable down to 1 ohm, which allows you to wire multiple subwoofers for maximum power output. Verified buyer feedback often praises the value for money, especially for powering a single 12-inch sub in a ported enclosure. The compact size makes installation easier than larger monoblocks.
Flaws but not dealbreakers. The included manual is basic and doesn’t cover advanced setup details. Some owners report that the gain setting is touchy and can introduce noise if not set correctly. Also, AUDIOZERONE is a newer brand, so long-term reliability data is limited compared to Pioneer or BOSS.
If you prefer a brand with a longer track record, the
BOSS R1100M above has a well-established reputation and similar power output.
⚠Warranty: AUDIOZERONE offers a standard warranty, but verify coverage length before purchasing from third-party sellers.
Pros
- ✓Class D design runs cool and efficient.
- ✓Stable down to 1 ohm for multi-sub setups.
- ✓MOSFET power supply for stable voltage.
- ✓Compact size for easy mounting.
Cons
- ✕Manual lacks detailed setup instructions.
- ✕Gain setting can be touchy and introduce noise.
- ✕Newer brand with less long-term reliability data.
RMS Power
~500W @ 1Ω, ~300W @ 2Ω, ~150W @ 4Ω
Dimensions
10.6 x 5.3 x 1.9 in
Best for: Budget-minded buyers who want an efficient Class D monoblock for a single subwoofer with 1-ohm stability.
ORION CBA2000.1D Cobalt Mono 1-Channel Class: Budget Monoblock with Remote Bass Knob
ORION CBA2000.1D Cobalt Mono 1-Channel Class: Budget Monoblock with Remote Bass Knob
#8
ORIONMonoblock, Bass Knob
6.8OUT OF 10
Power Output7.0
Build Quality6.5
Ease of Use7.0
Owner Verdict6.5
This monoblock is the only amp in our lineup that includes a wired remote bass knob at this price point. The ORION CBA2000.1D delivers 500 watts RMS at 2 ohms and 300 watts RMS at 4 ohms, with a peak rating of 2000 watts. It uses Class D technology for efficiency and includes a variable low-pass crossover and bass boost. The remote bass knob lets you adjust subwoofer level from the driver’s seat without reaching behind the amp.
The amp is stable down to 2 ohms, which covers most single-subwoofer setups. It has a MOSFET power supply and adjustable input sensitivity. Verified buyer feedback notes that it works well with a single 12-inch sub in a sealed box, producing clean bass without distortion at moderate volumes.
Flaws but not dealbreakers. Build quality feels average, with plastic terminal covers that some owners report breaking during installation. The power output at 4 ohms is relatively low (300W RMS), limiting its use with higher-impedance subs. A few reviewers mention that the amp runs warm even at normal listening levels, so good airflow is needed.
If you want higher power output at 4 ohms, the
BOSS R1100M above delivers 550W RMS at 2 ohms with a similar remote bass knob.
⚠Stability: This amp is not rated for 1-ohm loads. Stick to 2-ohm or 4-ohm subwoofers to avoid damage.
Pros
- ✓Wired remote bass knob included.
- ✓Class D efficiency for cooler operation.
- ✓Variable low-pass crossover and bass boost.
- ✓MOSFET power supply for stable voltage.
Cons
- ✕Build quality feels average with plastic terminals.
- ✕Low RMS output at 4 ohms (300W).
- ✕Runs warm; needs ventilation.
RMS Power
500W @ 2Ω, 300W @ 4Ω
Dimensions
11.0 x 5.5 x 1.9 in
Best for: Buyers who want a simple monoblock with a remote bass knob for basic subwoofer amplification on a tight budget.
Buying Guide: Power, Channels, Amplifier Class, and Your Electrical System
Picking the right car amplifier under $200 comes down to four main factors. Here's what you need to know before you buy.
How Much Power Do You Really Need?
A car amplifier is a device that boosts the low-voltage audio signal from your head unit to drive your speakers. The key number is RMS (Root Mean Square) power, not peak power. RMS tells you the continuous power the amp can deliver without distortion.
Peak power is a marketing number that represents a brief burst.
For under $200, you can expect 100-500 watts RMS total. Most factory speakers handle 15-50 watts RMS, so even a modest amp like the Pioneer GM-A3702 with 55W x 2 will make them noticeably louder and clearer. For a subwoofer, you want 300-500 watts RMS.
The BOSS R1100M delivers 550W RMS at 2 ohms, which is plenty for most 12-inch subs.
Ignore peak wattage. If an amp claims 2000W but only lists peak, its RMS is usually a quarter of that. Look for the RMS specification in the product details.
How Many Channels Do You Need?
Amplifiers come in 1, 2, 4, or more channels. A monoblock (1-channel) powers only a subwoofer. A 2-channel amp can drive two speakers or be bridged to power one sub.
A 4-channel amp like the Taramps TS 400×4 can power four speakers, or two speakers plus a sub in bridged mode.
If you are upgrading your entire system, a 4-channel amp gives you the most flexibility. If you only want bass, a monoblock is simpler and cheaper. Think about your end goal before buying.
Class A/B vs Class D: What is the Difference?
Class A/B amplifiers produce warmer, more natural sound but generate more heat and draw more current. They are less efficient (around 50-60%). Class D amplifiers are much more efficient (80-90%), run cooler, and are smaller.
They are better for modern cars with limited electrical capacity.
For under $200, you will find both types. The Pioneer GM-A3702 and BOSS R1100M are Class A/B, while the Taramps TS 400×4 and AUDIOZERONE ZE1000.1 are Class D. Most listeners cannot hear a difference in sound quality, but Class D amps are easier to install and less likely to drain your battery.
Does My Car's Electrical System Matter?
Yes. A 500-watt RMS amplifier draws about 40-50 amps of current. If your car has a stock 80-amp alternator, that is fine as long as you are not running other high-draw accessories.
For amps over 800 watts RMS, you may need a capacitor or upgraded alternator. Always use the correct gauge power wire: 8 AWG for up to 600W RMS, 4 AWG for higher.
Check your vehicle's alternator rating before buying a high-power amp. The Crunch Ground Pounder GP-1500.2 can draw significant current at high volume, so a voltage meter is a good idea.
Who Should NOT Buy Best Car Amplifier under $200
This price bracket serves a specific purpose, but it is the wrong choice for three kinds of buyers. Here is who should skip it and what to look at instead.
You Need Audiophile-Grade Sound Quality
If you are building a competition-level sound system or demand zero noise floor, a budget amplifier will disappoint you. Under $200, you will encounter audible hiss, limited headroom, and cheaper components. Look at amplifiers in the $300-500 range from brands like JL Audio, Alpine, or Audison.
They offer lower distortion, better signal-to-noise ratios, and more robust build quality.
You Need to Power Multiple Subwoofers at High Volume
For a pair of 15-inch subs or a competition SPL system, 500 watts RMS per channel is not enough. You need an amplifier that delivers 1000+ watts RMS reliably, which costs $300 and up. The Crunch Ground Pounder claims high peak wattage, but its real RMS output is insufficient for serious bassheads.
Save up for a true high-power monoblock.
You Need a Complete Amplifier Installation Kit Included
Most amps under $200 do not include wiring, fuses, or installation hardware. If you have no tools or previous experience, the total cost will be higher than the amp price alone. Consider a bundled kit that includes an amp with a wiring set, or budget an extra $30-60 for a quality installation kit.
The BOSS R1100M at least includes a remote bass knob, but you still need your own power wire.
Final Verdict
The Taramps TS 400×4 is our top pick because it delivers honest 400 watts RMS across four channels in a compact Class D design that fits anywhere. It is the best all-rounder for anyone who wants to power their full-range speakers with clean, reliable wattage under $200.
Want deep bass instead? The BOSS R1100M is the best monoblock choice, with 550 watts RMS at 2 ohms and a wired remote included. It pairs perfectly with a single 12-inch sub for punchy, warm low end.
Need a trusted brand? The Pioneer GM-A3702 offers automatic signal sensing and Pioneer reliability for a modest 2-channel speaker upgrade. On a tight budget?
The Pyle PLA2200 is the cheapest way to add power to two speakers.
Who should skip this category? Anyone needing competition-level output, audiophile clarity, or a full installation kit included. Check the Who Should NOT Buy section above before you spend.
FAQ
What is the best car amplifier under $200 overall?
The Taramps TS 400×4 is the best overall pick. It delivers a true 400 watts RMS across four channels in a compact Class D design, making it ideal for powering a full-range speaker system with clean distortion-free sound.
How many watts do I need for my car audio system?
For factory speakers, 15-50 watts RMS per channel is enough. For aftermarket speakers, 50-100 watts RMS per channel is ideal. For a subwoofer, aim for 300-500 watts RMS.
Most budget amps under $200 fall in this range.
What is the difference between RMS and peak power?
RMS (Root Mean Square) is the continuous power an amplifier can deliver without distortion. Peak power is a brief maximum burst. Always use RMS ratings to compare amplifiers.
Ignore peak wattage, as it is often exaggerated by 3-4 times the real RMS value.
Do I need a 4-channel or monoblock amplifier?
A 4-channel amp powers your front and rear speakers, with the option to bridge two channels for a subwoofer. A monoblock powers only a subwoofer. If you are adding only bass, a monoblock is simpler.
If you want to upgrade your whole system, a 4-channel amp gives you more flexibility.
Will a budget amplifier drain my car battery?
A 500-watt RMS amplifier draws about 40-50 amps. Most alternators can handle this as long as the engine is running and you are not using other high-draw accessories. If you play music at high volume with the engine off, the battery will drain quickly.
A capacitor or upgraded alternator is only needed for systems over 800 watts RMS.
Do I need special wiring for a car amplifier?
Yes. You need a power wire (8 AWG for up to 600W RMS, 4 AWG for higher), a ground wire, RCA cables, speaker wire, and a fuse holder. Most budget amps do not include these, so budget an extra $30-60 for a quality installation kit.
A solid ground connection is critical to prevent alternator whine and noise.
