If your door speakers sound thin or distorted when you turn up the volume, you don't necessarily need new speakers, you need a proper amplifier. The best car amplifier for door speakers is the Kicker 46CXA3604 CXA3604-4×90-Watt 4-Channel Full-Range Amp, the only one here that delivers clean, reliable power with the highest owner satisfaction score in this lineup. It's the pick for anyone who wants clearer highs, tighter bass, and zero distortion at everyday listening levels.
Want more raw power for less money instead? The Taramps TS 400×4 400 watts RMS gets you there, as long as you're comfortable with a more basic feature set and a slightly noisier fan.
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Most amplifier guides just list specs and call it a day. This one tells you which amps actually work with your car's electrical system, which ones fit under a seat, and which buyers should skip this category entirely (they get their own section later).
Everything below comes from current Amazon product data, manufacturer specifications, and verified owner feedback, not hands-on lab testing. Our editorial analysis compares real-world track records so you can buy with confidence.
Quick Answer: The Best Car Amplifier for Door Speakers
The Kicker 46CXA3604 is our top pick for overall sound quality and reliability. Here is the full lineup ranked:
Thinking about a monoblock or 2-channel amp for door speakers instead? Jump to Who Should NOT Buy below before you spend anything.
Comparison Table
Here is 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.
Kicker 46CXA3604 CXA3604-4×90-Watt 4-Channel Full-Range Amp: Best Overall for Door Speakers
#1
KickerProven sound, 4.7 stars
8.9OUT OF 10
Power Output8.5
Sound Quality9.5
Build Quality9.0
Value8.5
This is the amp that makes your door speakers sound like you upgraded the entire system. The Kicker 46CXA3604 delivers 90 watts RMS per channel into four channels, which is more than enough to drive most aftermarket door speakers to their full potential. Owner reviews consistently praise its clean, distortion-free output even at higher volumes. With a 4.7 out of 5 star rating across thousands of verified purchases, this is the most trusted amp in the lineup.
Kicker uses Class D technology in the CXA series, which means it stays cool and draws less current from your charging system than older Class A/B designs. It measures compact enough to mount under a seat or in a trunk corner. The built-in variable crossover lets you dial in the right frequency range for your door speakers, so you get punchy mids and clear highs without muddying the sound.
Flaws but not dealbreakers. 90 watts per channel is plenty for most people, but if you are trying to fill a truck bed or power very inefficient speakers, you may want more headroom. The Kicker also lacks a wired bass knob remote, which some competing amps include.
If you need more raw power per channel, the
Taramps TS 400×4 further down delivers 400 watts RMS total and costs less, though it trades some sound refinement for that extra output.
⚠Wiring: Kicker recommends using at least 8-gauge power and ground wire for this amp. Pair it with a quality wiring kit to avoid voltage drop.
Pros
- ✓Highest owner ratings: 4.7/5 across verified buyers means real people love it.
- ✓Clean, musical sound: Ideal for upgrading factory speakers without harshness.
- ✓Efficient Class D design: Runs cooler and strains your alternator less than A/B amps.
- ✓Trusted brand support: Kicker has decades of car audio experience and solid warranty service.
Cons
- ✕No bass knob included: You will need to buy a remote level control separately.
- ✕Moderate power output: 90W per channel may not satisfy extreme SPL builds.
- ✕Premium price tier: You pay more for the brand name and sound quality.
Best for: Anyone who wants a reliable, great-sounding 4-channel amp for door speakers and values sound quality over raw power.
Taramps TS 400X4 Black 2 Ohms: Best Compact 4-Channel
#2
TarampsFlexible inputs, small size
8.7OUT OF 10
Power Output8.5
Sound Quality8.5
Build Quality8.5
Value8.8
This is the updated version of the Taramps TS 400×4 with a more user-friendly feature set. The TS 400X4 Black adds high-level speaker wire inputs alongside standard RCA inputs, so you can connect it directly to a factory radio that lacks RCA preouts. That makes it a prime candidate for upgrading a stock audio system without swapping your head unit. It also offers bridgeable channels and a built-in crossover.
Rated at 400 watts RMS total (100W x 4 at 2 ohms), this Class D amp keeps the chassis compact enough to fit under most car seats. Owner reviews note the improved connectivity options and reliable build quality. The 2-ohm stability means you can wire lower-impedance speakers or parallel-wire multiple speakers per channel for more flexibility.
Flaws but not dealbreakers. Some users report the cooling fan can be audible during quiet passages, which matters if you listen at low volumes often. The manual is also minimal, so first-time installers may need to watch online setup videos.
If a quieter listening experience matters more to you, the
Kicker 46CXA3604 at the top of this list uses a fanless or low-noise design that owners consistently call silent in normal use.
⚠Install: High-level inputs make this amp ideal for factory radio upgrades. Use the included harness adapter for a clean connection without cutting wires.
Pros
- ✓Factory radio compatible: High-level inputs make upgrading stock systems simple.
- ✓Compact footprint: Small chassis fits under most car seats with room to spare.
- ✓Bridgeable channels: Can combine channels for more power to a single speaker or sub.
- ✓2-ohm stable: Gives flexibility for different speaker impedance configurations.
Cons
- ✕Audible cooling fan: Some owners report fan noise at low listening levels.
- ✕Minimal manual: Setup instructions are sparse; online help may be needed.
- ✕Power rating at 2 ohms: Real-world output at 4 ohms is lower, around 60W per channel.
Best for: Upgrading a factory audio system without replacing the head unit, especially if space under the seat is tight.
Taramps TS 400×4 400 watts RMS: Best Value 4-Channel Power
#3
TarampsBudget-friendly Class D
8.6OUT OF 10
Power Output9.0
Sound Quality8.0
Build Quality8.0
Value9.5
This is the amp for the budget-conscious builder who still wants real 400-watt output. The original Taramps TS 400×4 delivers 100 watts RMS per channel at 2 ohms, and it does so at a price that undercuts most competitors by a significant margin. Owner reviews consistently mention how much cleaner their door speakers sound after installation, though some note the sound can be a bit more “brutal” than refined. It’s a Class D amp with RCA inputs and a built-in crossover, and it’s small enough to hide almost anywhere.
Setup is straightforward if you have a head unit with RCA preouts. The amp is also bridgeable, so you can run it as a 2-channel amp with more power to the front speakers and use the rear channels for a small subwoofer. Taramps is a well-known Brazilian brand in the car audio world, and these amps are popular in high-SPL builds for their ability to deliver clean power without breaking the bank.
Flaws but not dealbreakers. The lack of high-level inputs means you cannot easily upgrade a factory radio without an adapter. The cooling fan is also noticeable, and some owners report that the power terminals are a bit small for thicker gauge wire. It also lacks a remote level control.
If you need high-level inputs for a factory radio upgrade, the
Taramps TS 400X4 Black just above includes them and costs about the same.
⚠Wiring: Use at least 8-gauge wiring. The small power terminals may require a reducer ring terminal for 4-gauge wire.
Pros
- ✓Excellent value: Lowest cost per watt among 4-channel amps here.
- ✓Solid power output: 100W x 4 at 2 ohms is enough for most door speakers.
- ✓Compact and lightweight: Easy to mount under a seat or in a small space.
- ✓Bridgeable for flexibility: Can be used as a 2-channel plus subwoofer amp.
Cons
- ✕No high-level inputs: Not a direct fit for factory radios without adapters.
- ✕Audible fan: Can be distracting at low volume levels.
- ✕Basic sound refinement: Lacks the musical warmth of premium brands like Kicker.
Best for: Budget-minded builders who want real 400W of clean power for aftermarket door speakers and don’t need high-level inputs.
Recoil DI550.4 Full-Range Class-D 4-Channel Car: Best Budget High-Power
#4
RecoilPeak power leader
8.5OUT OF 10
Power Output9.0
Sound Quality8.0
Build Quality8.0
Value8.5
This is the amp for the shopper who wants the biggest peak power number at the lowest price. The Recoil DI550.4 advertises a massive 1040 watts peak power (260W x 4), though real-world RMS output is more modest at around 90W x 4 at 2 ohms. Still, it uses a MOSFET power supply and Class D design for efficiency. Owner feedback is positive overall, with many buyers noting that it drives their aftermarket speakers much louder than their factory stereo ever could.
Recoil includes a wired bass knob remote with this amp, which is a nice bonus that the Kicker and Taramps units don’t always include. The chassis is relatively compact, and the build quality feels solid for the price point. It also features a built-in variable crossover and phase control, giving you decent tuning flexibility.
Flaws but not dealbreakers. Some owners report that the advertised peak power is optimistic, and the amp can get warm during extended high-volume use. The instruction manual is basic, and the sound quality, while good, doesn’t match the refinement of the Kicker. There are also occasional reports of units being dead on arrival.
If you prioritize sound quality over peak power numbers, the
Kicker 46CXA3604 at the top of the list is the safer bet for cleaner, more musical sound.
⚠Heat: The amp can run warm. Mount it in a well-ventilated area and avoid enclosing it in tight spaces.
Pros
- ✓High peak power rating: 1040W peak gives impressive bragging rights.
- ✓Includes bass knob remote: Convenient for adjusting subwoofer level from the driver seat.
- ✓MOSFET power supply: Efficient and reliable power delivery for the price.
- ✓Compact Class D design: Stays cooler than Class A/B amps with similar output.
Cons
- ✕Optimistic power specs: Peak power is unrealistic; RMS is closer to 90W per channel.
- ✕Warm operation: Can get hot with sustained high volume, requiring good ventilation.
- ✕Quality control concerns: Occasional DOA units reported in owner reviews.
Power
1040W peak / ~360W RMS
Best for: Budget buyers who want a high peak-power number and a remote bass knob, and don’t mind slightly less refined sound.
DS18 SXE-1200.4/RD Car Amplifier Stereo Full-Range: Best Small Chassis
#5
DS18Class A/B warmth, tiny
8.3OUT OF 10
Power Output7.5
Sound Quality8.5
Build Quality8.0
Value8.0
This is the amp for the audiophile who prioritizes warm, natural sound over pure wattage. The DS18 SXE-1200.4 uses a Class A/B amplifier design, which is known for producing smoother, more musical sound than most Class D amps. It delivers 60 watts RMS per channel at 4 ohms (1200W peak power). While that’s less raw power than Class D competitors, the sound quality is noticeably warmer and more detailed for critical listening.
The chassis is compact and the red finish gives it a distinctive look. DS18 includes a built-in crossover and the amp is bridgeable. Owner reviews highlight the clean sound reproduction, especially for vocals and acoustic music. Class A/B amps draw more current and run warmer than Class D, so you need to ensure your alternator can handle the load, especially if you run the system at high volumes for long periods.
Flaws but not dealbreakers. The lower RMS output means you may not get as much volume as a Class D amp of similar price. The amp also runs considerably hotter, so ventilation is critical. Some owners note that the power specs are overstated on the peak side.
If you need more volume for rock or hip-hop at high speeds, the
Taramps TS 400×4 earlier in this list provides more usable RMS power at a similar price point.
⚠Heat: Class A/B amps run hot. Mount it in a location with good airflow and never cover the heatsink.
Pros
- ✓Warm, musical sound: Class A/B design delivers smooth, natural audio quality.
- ✓Compact physical size: Fits in tight spaces where larger amps won’t go.
- ✓Stylish design: Red finish stands out from the usual black boxes.
- ✓Bridgeable channels: Can be configured for more power to a single speaker.
Cons
- ✕Lower RMS power: 60W x 4 at 4 ohms is less than Class D rivals.
- ✕Generates significant heat: Requires good ventilation to avoid thermal shutdown.
- ✕Lower electrical efficiency: Draws more current from your alternator.
Power
240W RMS / 1200W peak
Best for: Audiophiles who value warm, natural sound for acoustic music or vocals and have good ventilation for the amp.
Taramps TS 1200 Watt Amp 4: Best Extreme Power
#6
TarampsMassive 1200W RMS
8.1OUT OF 10
Power Output9.8
Sound Quality7.0
Build Quality7.5
Value8.0
This is the amp for the SPL competitor who needs raw, unapologetic power. The Taramps TS 1200 Watt Amp 4 delivers a staggering 1200 watts RMS total (300W x 4 at 2 ohms), making it the most powerful 4-channel amp in this roundup. It uses a Class D design to keep the size manageable, but make no mistake — this is a serious piece of equipment for serious builds. Owner reviews from loud car audio enthusiasts praise its ability to drive speakers to extremely high volumes without clipping.
The amp features a fixed crossover and accepts both RCA and high-level inputs, which adds flexibility for different source units. Professional installation is recommended, and Taramps explicitly states that on the product page. The power terminals are large enough to accept 4-gauge wire, which is essential for feeding this much current. You will need a high-output alternator or a second battery to run this amp at full tilt without dimming your headlights.
Flaws but not dealbreakers. The sound quality is not as refined as lower-power options — it’s built for volume, not audiophile detail. The fixed crossover limits tuning options compared to amps with adjustable crossovers. Many owners note that the amp runs hot and requires excellent ventilation. It’s also larger than the other amps here, so measuring your mounting space beforehand is critical.
If you don’t need extreme SPL and want better sound quality for daily driving, the
Kicker 46CXA3604 at the top of the list is a much more practical choice for most people.
⚠Electrical: This amp draws over 100 amps at full output. Ensure your vehicle’s charging system and battery can handle the load.
Pros
- ✓Massive RMS power: 1200W total is the most of any 4-channel amp here.
- ✓Flexible inputs: Accepts both RCA and high-level speaker wire inputs.
- ✓Class D efficiency: Delivers huge power without being as large as old A/B amps.
- ✓Built for loud builds: Ideal for SPL competition or very loud daily systems.
Cons
- ✕Sound quality not refined: Prioritizes volume over audio fidelity.
- ✕Fixed crossover: Less tuning flexibility than adjustable crossovers.
- ✕Demands heavy electrical upgrades: May require alternator or battery upgrade.
Best for: SPL enthusiasts and loud car audio builders who need maximum power output and are prepared for electrical upgrades.
Pioneer GM-A3702 500W Max Class AB: Best for Front Speakers Only
#7
PioneerAuto signal sensing
7.9OUT OF 10
Power Output7.5
Sound Quality8.0
Build Quality8.0
Value8.0
This is the amp for the driver who only wants to power their front door speakers and nothing else. The Pioneer GM-A3702 is a 2-channel Class A/B amplifier that delivers 60 watts RMS per channel at 4 ohms (500W max). It is designed for simplicity and reliability. The standout feature is automatic signal sensing and turn-on, which means it can detect audio input from your head unit and power on automatically, even if your radio lacks a remote turn-on wire. That makes it a fantastic choice for upgrading front speakers in a factory system.
Pioneer is a household name in car audio, and this amp is built to last. It includes a built-in high-pass and low-pass filter, so you can dial in the right frequency range for your door speakers. The bridgeable design lets you combine both channels into a single more powerful channel if you want to drive a single subwoofer or a pair of speakers in parallel. Owner reviews consistently praise the clean sound and easy installation.
Flaws but not dealbreakers. Being a 2-channel amp, it can only power two speakers (or one set of components). If you want to amplify all four door speakers, you will need two of these or a 4-channel amp. The Class A/B design also means it draws more current and runs warmer than a Class D equivalent. The 60W RMS per channel is modest compared to the 4-channel options here.
If you need to power all four doors with a single amp, the
Kicker 46CXA3604 at the top of the list gives you four channels of 90W RMS each, making it a much more versatile solution for a full-system upgrade.
⚠Install: The auto turn-on feature simplifies installation with factory radios. Just connect power, ground, and speaker wires, and it will power on with audio signal.
Pros
- ✓Auto signal sensing: Turns on automatically with audio input, no remote wire needed.
- ✓Trusted brand: Pioneer is a well-known, reliable name in car audio.
- ✓Clean Class A/B sound: Warm, natural audio quality for front speakers.
- ✓Bridgeable design: Can be used as a single-channel amp for more power.
Cons
- ✕Only 2 channels: Cannot power all four door speakers with one unit.
- ✕Modest RMS power: 60W per channel is less than many 4-channel options.
- ✕Runs warm: Class A/B design generates more heat than Class D.
Best for: Drivers who only want to upgrade their front door speakers and value a simple, reliable installation with a trusted brand.
BOSS Audio Systems R1100M 1100 Watt: Best Monoblock for Subwoofers
#8
BOSSBudget subwoofer power
7.6OUT OF 10
Power Output8.5
Sound Quality7.0
Build Quality7.0
Value8.0
This is the amp for the bass lover who wants to add a subwoofer to their existing door speaker system. The BOSS Audio Systems R1100M is a monoblock (single-channel) amplifier designed specifically for subwoofers. It delivers 1100 watts of peak power (275W RMS at 4 ohms, 550W RMS at 2 ohms). It is not intended for door speakers, which is why it sits at the bottom of this list for door speaker amplification. However, if you are building a system that includes a separate subwoofer, this is a budget-friendly option to power it.
BOSS Audio includes a wired bass knob remote, which is a nice touch for adjusting the subwoofer level from the driver seat. The amp features a low-pass crossover and phase control, essential for integrating a subwoofer with your door speakers. Owner reviews are mixed but generally positive for the price, with many buyers praising the bass output for the cost. It is a Class A/B design, so it runs warm and draws more current than a Class D monoblock would.
Flaws but not dealbreakers. This is not a door speaker amp — it is a subwoofer amp. Using it for door speakers would require a full-range output, which it does not provide. The build quality is basic, and some owners report reliability issues over time. The RMS power is modest compared to the peak rating, which is a common marketing tactic.
If you are looking for a proper 4-channel amp for your door speakers, the
Kicker 46CXA3604 at the top of the list is the right tool for that job. The BOSS R1100M is only worth considering if you already have a door speaker amp and need a cheap subwoofer amp.
⚠Note: This is a monoblock subwoofer amp, not a full-range amp for door speakers. It is included here only for context. For door speakers, choose a 4-channel or 2-channel full-range amp.
Pros
- ✓Very affordable: One of the cheapest ways to power a subwoofer.
- ✓Includes bass knob: Convenient remote level control for subwoofer volume.
- ✓Class A/B sound: Warm bass reproduction for musical subwoofer integration.
- ✓Compact size: Easy to mount in tight spaces.
Cons
- ✕Not for door speakers: Monoblock design is only for subwoofers.
- ✕Basic build quality: Some reliability concerns over time in owner reviews.
- ✕Peak vs RMS gap: 1100W peak is much higher than real-world RMS power.
Power
1100W peak / 275W RMS @ 4ohm
Best for: Budget-minded bass lovers who already have a door speaker amp and need a cheap monoblock to power a subwoofer.
Buying Guide: Power, Channels, Class and Budget
Choosing the right car amplifier for door speakers means balancing four key decisions. Each one directly affects how your system sounds and how much you spend.
How much power do you really need?
The most common mistake is buying way more power than your door speakers can handle. Every speaker has a power handling rating, measured in watts RMS. You want an amplifier that delivers RMS power close to that rating, but not significantly more.
For example, a typical aftermarket door speaker might handle 50 to 80 watts RMS. The Kicker 46CXA3604 delivers 90 watts per channel, which is a good match. Going with a 300-watt per channel amp like the Taramps TS 1200 Watt Amp 4 would risk blowing those speakers if you turn the gain up too high.
Check your speakers' RMS rating. Then choose an amp that delivers about 75 to 100 percent of that number per channel. More power than that is wasted or dangerous unless you plan to upgrade speakers later.
4-channel vs 2-channel vs monoblock
This is the simplest decision. For door speakers, you almost always want a 4-channel amplifier. That lets you power front left, front right, rear left, and rear right speakers independently.
A 2-channel amp like the Pioneer GM-A3702 can only power two speakers. That works if you only want to amplify your front door speakers and leave the rears on factory power. But for a full system upgrade, a 4-channel is the right choice.
Monoblock amps like the BOSS R1100M are designed for subwoofers only. They output a single channel and lack the full-range output needed for door speakers. Avoid them for this application.
Class D vs Class A/B
Class D amplifiers are more efficient. They convert a higher percentage of the power from your alternator into audio output, which means they run cooler and draw less current. Most modern car audio amps, including the Kicker 46CXA3604 and the Taramps models, use Class D technology.
Class A/B amplifiers like the DS18 SXE-1200.4 and the Pioneer GM-A3702 produce warmer, more natural sound quality. They are preferred by some audiophiles for their musicality. The trade-off is lower efficiency, meaning they run hotter and place a heavier load on your electrical system.
For a daily driver, Class D is the practical choice. For a dedicated sound quality build, Class A/B may be worth the extra heat and current draw.
Budget and value
The amps in this lineup span a wide range. The Taramps TS 400×4 offers the best value for raw power output, delivering 400 watts RMS at a very low cost. The Kicker 46CXA3604 costs more but offers better sound quality and a proven track record with the highest owner satisfaction.
Your budget should also include a wiring kit. A quality 8-gauge or 4-gauge amplifier wiring kit is essential for safe installation and optimal performance. Don't skip that.
If you are on a tight budget, the Taramps TS 400×4 or the Recoil DI550.4 are solid choices. If you prioritize sound quality and reliability, the Kicker is worth the extra investment.
To see how these factors play out on real picks, compare the Taramps TS 400×4 400 watts RMS, Taramps TS 400X4 Black 2 Ohms and the Kicker 46CXA3604 CXA3604-4×90-Watt 4-Channel Full-Range Amp reviewed above.
Who Should NOT Buy Best Car Amplifier for Door Speakers
A car amplifier is the wrong purchase for some buyers. Here is who they are, and what to look at instead.
You Only Want to Replace a Blown Factory Radio
If your factory stereo is dead or distorted, you may not need an amplifier. A new head unit (car stereo) with built-in amplification can often solve the problem. Many modern head units output 20 to 50 watts per channel, which is enough for casual listening.
Look at a single-DIN or double-DIN receiver instead.
You Need to Power a Full Subwoofer System
If your goal is to shake the neighborhood with bass, you need a monoblock subwoofer amplifier, not a multi-channel amp for door speakers. The BOSS R1100M is a better option for that, but even then, you will also need a separate amp for your door speakers. Consider a dedicated subwoofer amp and a separate 4-channel amp for the doors.
You Are on a Strict Budget Under $50
Realistically, a quality 4-channel amplifier costs more than $50. If you are trying to spend less than that, you are likely to get a poorly built amp that will distort or fail. Save up for a Taramps TS 400×4 or a Recoil DI550.4 instead.
Alternatively, consider a powered subwoofer that includes its own amplification for a simple bass upgrade.
You Have No Plans to Upgrade Your Speakers
Amplifying factory speakers can help, but the improvement is limited. Factory speakers are typically made of cheap materials and cannot handle much power. If you are not planning to replace your door speakers with aftermarket ones, the benefit of an amplifier is smaller.
You might get a cleaner signal, but the speakers themselves will still be the bottleneck.
Final Verdict
The best car amplifier for door speakers is the Kicker 46CXA3604. It delivers 90 watts of clean, reliable power per channel across four channels, and it has the highest owner satisfaction rating in this lineup at 4.7 out of 5 stars. If you want great sound quality and a proven brand, this is the one to buy.
Want more power for less money? The Taramps TS 400×4 gives you 400 watts RMS total at a very low price. It's a fantastic value, though it lacks some refinement and high-level inputs.
The Taramps TS 400X4 Black adds those inputs for factory radio upgrades.
Need a simple 2-channel solution for front speakers only? The Pioneer GM-A3702 with auto signal sensing is a reliable choice from a trusted brand.
Building a full SPL competition system? The Taramps TS 1200 Watt Amp 4 offers extreme power, but be prepared for electrical upgrades.
Before you buy, look at the Who Should NOT Buy section above. If you are in one of those categories, save your money and buy the right tool for your actual need.
FAQ
What's the best car amplifier for door speakers overall?
The Kicker 46CXA3604 is our top pick for overall sound quality, reliability, and owner satisfaction. It delivers 90 watts RMS per channel across four channels and has a 4.7 out of 5 star rating.
How many channels do I need for door speakers?
You need a 4-channel amplifier to power all four door speakers independently. A 2-channel amp can only power two speakers, and a monoblock is for subwoofers only.
How much power do I need for my door speakers?
Match the amplifier's RMS power per channel to your speaker's RMS power handling, typically 75 to 100 percent. For most aftermarket speakers, 50 to 90 watts per channel is sufficient.
Can I use a monoblock amp for door speakers?
No. Monoblock amplifiers are designed for subwoofers and output a single channel with a low-pass filter. They cannot reproduce the full frequency range needed for door speakers.
Do I need to upgrade my car's electrical system for a door speaker amp?
For a 400-watt RMS 4-channel amp like the Taramps TS 400×4, your stock alternator and battery should be fine. For a 1200-watt amp like the Taramps TS 1200 Watt Amp 4, you may need a high-output alternator or a second battery.
What's the difference between Class D and Class A/B amplifiers?
Class D amplifiers are more efficient, run cooler, and draw less current. Class A/B amplifiers produce warmer, more natural sound but run hotter and are less efficient. For most daily drivers, Class D is the practical choice.
For audiophile builds, Class A/B may be preferred.
