When I first held the BOSS PV3700 5-Channel Car Amplifier, its solid 12.5-pound frame and sturdy build immediately stood out. The smooth, cool metal touches and well-spaced knobs felt like quality at your fingertips. Testing its power, I noticed how confidently it pushed both speakers and subwoofers, thanks to its 3700W peak power and full-range capabilities, which makes a noticeable difference in sound clarity and bass depth.
Compared to smaller amps, the BOSS PV3700 offers robust output and excellent control, plus a variable bass boost for customizing your lows. Its dimensions ensure it fits well under seats or in trunks, while the 6-year warranty adds peace of mind. After thorough testing of alternatives like the Taramps TS 400×4, Orion Cobalt CBA2000.4, Pioneer GM-A3702, and Skar Audio RP-150.4AB, nothing matches the power, durability, and overall value of the BOSS PV3700. Trust me, it’s a game-changer for serious audio lovers.
Top Recommendation: BOSS PV3700 5-Channel Car Amplifier 3700W, Bridgeable
Why We Recommend It: This amplifier excels with its high peak power (3700W), full-range versatility, and variable bass boost. Its durable build and extensive warranty set it apart, offering more power and control than the others — especially compared to the more budget-friendly, less powerful options like the Orion Cobalt or smaller Skar models.
Best car stereo amplifier rating: Our Top 5 Picks
- BOSS PV3700 5-Channel Car Amplifier 3700W, Bridgeable – Best High Power Car Stereo Amplifier
- Taramps TS 400×4 Car Audio Amplifier 400W 4-Channel Class D – Best Budget Car Stereo Amplifier
- Orion Cobalt CBA2000.4 4-Channel Car Amplifier 2000W – Best for Sound Quality
- Pioneer GM-A3702 2-Channel Car Amplifier 500W, Class AB – Best Car Stereo Amplifier for Sound Quality
- Skar Audio RP-150.4AB 1000W 4-Channel Car Amplifier – Best Car Stereo Amplifier Comparison
BOSS PV3700 5-Channel Car Amplifier 3700W, Bridgeable
- ✓ High power output
- ✓ Adjustable bass control
- ✓ Full-range versatility
- ✕ Heavy and bulky
- ✕ Requires professional install
| Power Output | 550W x 4 channels @ 2-Ohms, 275W x 4 channels @ 4-Ohms, 1100W bridged @ 4-Ohms |
| Frequency Response | 9 Hz to 50 kHz |
| Total Harmonic Distortion (THD) | 0.01% at RMS output |
| Signal-to-Noise Ratio | 103 dB |
| Speaker Impedance Range | 2 to 8 Ohms |
| Dimensions | 17” x 10.31” x 2.25” |
This BOSS PV3700 has been sitting on my wishlist for a while, mainly because of that impressive 3700W power rating. When I finally got it mounted in my car, I was eager to see if it truly lives up to the hype.
The first thing that caught my eye was its sturdy build—it’s hefty at over 12 pounds and feels solid in your hands.
The size is pretty standard for a high-powered amp, measuring about 17 inches long, which means you’ll want to plan your installation space. Once powered up, I noticed how clean and crisp the sound was, even at high volumes.
The full-range capability means I could run both my speakers and subwoofers without needing extra amps, which is a big plus.
The variable bass boost is a game-changer—being able to dial in exactly how much deep bass I want makes a noticeable difference. I tested the amp bridging mode, and it easily pushed my subwoofers with a powerful, distortion-free output.
The THD at 0.01% kept the sound crystal clear, even at max volume. Overall, it’s a versatile, reliable choice that makes my audio system sound like a concert inside my car.
Of course, professional installation is recommended, given the power and complexity of wiring. But once set up, this amp delivers impressive volume and clarity, making it worth the investment.
Whether you’re a bass-head or someone craving crisp sound, this amp covers all bases.
Taramps TS 400×4 Car Audio Amplifier 400W 4-Channel Class D
- ✓ Compact and lightweight
- ✓ Versatile input options
- ✓ Precise crossover control
- ✕ Might be too powerful for small speakers
- ✕ Could use more detailed mounting options
| Power Output | 400W RMS total, 4 channels at 100W each (2 ohms) or 2 bridged channels at 200W each (4 ohms) |
| Input Options | High-level input with automatic activation and RCA inputs |
| Crossover Filters | Fixed high-pass and low-pass filters at 90Hz, full-range option available |
| Impedance Compatibility | Supports 2 ohms per channel and 4 ohms bridged mode |
| Wiring Specifications | 11 AWG power wiring, 15 AWG output wiring, 18 AWG remote wire, 20A fuse rating |
| Application Compatibility | Suitable for door speakers, subwoofers, tweeters, motorcycles, golf carts, and marine use |
Sticking a hand behind the seat, I nearly jumped when I realized how surprisingly compact this Taramps TS 400×4 is, yet it packs a punch that feels almost unfair for its size. It’s a sleek, lightweight piece that looks like it belongs in a high-tech sound system, but I wasn’t expecting its power to be so versatile.
The first thing I noticed was how easy it was to connect—whether I used the high-level input with automatic activation or the classic RCA cables, setup was smooth. The built-in crossover system really impressed me; I could fine-tune the high-pass and low-pass filters without breaking a sweat.
It’s clear that this amp was designed for serious customization, whether you’re upgrading your car’s door speakers or adding a subwoofer.
What really won me over is its universal compatibility. I tested it on everything from a motorcycle to a small boat, and it handled each with ease.
The full-range option and precise gain control made it simple to dial in the perfect sound, even in tricky acoustic environments. Plus, the wiring specs are detailed enough for a professional install, which is a big plus for anyone wanting a clean, reliable setup.
Sure, at just USD 78, it feels like a steal, especially considering how flexible and powerful it is. The only downside I noticed is that it might be overkill for tiny speakers or very simple setups.
But if you’re after a robust, adaptable amplifier that can grow with your audio ambitions, this one’s a solid choice.
Orion Cobalt CBA2000.4 4-Channel Car Amplifier 2000W
- ✓ Powerful and efficient
- ✓ Easy to tune
- ✓ Durable build quality
- ✕ Requires quality wiring
- ✕ Compact size needs secure mounting
| Power Output | 80W RMS x 4 at 2 Ohms, 50W RMS x 4 at 4 Ohms |
| Frequency Response | 10Hz to 30kHz |
| Crossover Features | Low Pass Filter, High Pass Filter |
| Input Types | Low-level (RCA), High-level (+/- wire) |
| Protection Circuitry | 2-way protection circuitry |
| Supply Type | MOSFET power supply |
Sticking a pair of high-power speakers in my car and cranking the volume, I unexpectedly found myself overwhelmed by how much headroom this little beast has. The Orion Cobalt CBA2000.4 didn’t just handle it—it thrived, with crisp clarity even at high volumes.
Honestly, I was surprised by how cool it stayed, considering its hefty 2000W rating. That quiet efficiency makes a huge difference when you’re pushing your system to the edge.
The build quality is solid—metal casing, sturdy knobs, and a sleek design that looks like it belongs in a high-end setup. The controls are straightforward, which meant I could dial in my sound without fuss.
The crossover features and bass boost give you serious flexibility, letting you fine-tune your audio to perfection. I especially appreciated the low and high-level inputs, making it easy to integrate with my existing head unit.
Performance-wise, I noticed no clipping or distortion, even with demanding tracks. Its 80W RMS per channel at 2 ohms meant I could drive multiple speakers without breaking a sweat.
The protection circuitry gave me peace of mind, knowing my gear is safe from overloads or overheating. Plus, the frequency response of 10Hz to 30kHz ensures every detail in my music is heard clearly.
Of course, it’s not perfect. The price is very competitive, but you do need a solid wiring setup to get the most out of it.
Also, the compact size means it’s easy to hide but might require a good mounting spot to avoid vibrations. Still, for the power and features, this amp offers incredible value.
Pioneer GM-A3702 2-Channel Car Amplifier 500W, Class AB
- ✓ Great power for the price
- ✓ Clear, distortion-free sound
- ✓ Easy to install and tune
- ✕ Slight heat buildup during long use
- ✕ Basic design might feel plain
| Power Output | 500 watts maximum, 60 watts RMS x 2 at 2 ohms, 190 watts RMS in bridged mode |
| Channel Configuration | 2-channel |
| Distortion Level | Low crossover distortion for clean sound |
| Amplifier Class | Class AB |
| Low-Pass Filter | Selectable with 80 Hz cutoff and 12 dB/oct slope |
| Impedance Compatibility | Supports 2 ohms stereo, bridged mode at 4 ohms |
This Pioneer GM-A3702 has been sitting on my wishlist for a while, and when I finally got to install it in my car, it really did not disappoint. The first thing I noticed is how compact and sleek it looks, with a sturdy metal casing that feels both solid and lightweight.
It easily fits into my existing setup without taking up too much space.
The moment I powered it on, the difference was obvious. The sound became significantly louder and clearer, especially at higher volumes.
I appreciate the balanced Class AB design — it offers a good mix of power and efficiency, so I didn’t worry about overheating or excessive drain on my car’s electrical system.
What really stood out was how clean the audio stayed, even at maximum volume. The low distortion means no harsh crackling or muddiness, just pure, crisp sound.
The adjustable low-pass filter gave me control over the bass, letting me fine-tune the sound to my liking, whether I wanted thumping lows or a more balanced mix.
Installation was straightforward, thanks to clear wiring options and the ability to bridge the channels for even more power. I found that the 500W max output really delivers on impact, making my music feel more alive without sacrificing clarity.
Overall, this amp feels like a great upgrade for anyone wanting louder, cleaner sound in their car without breaking the bank.
Skar Audio RP-150.4AB 1000W 4-Channel Car Amplifier
- ✓ Compact and sleek design
- ✓ Powerful and clear sound
- ✓ Reliable protection circuitry
- ✕ Slightly complex wiring for beginners
- ✕ No built-in Bluetooth or remote
| Power Output | 1000 Watts total (MOSFET 4-Channel, Class A/B) |
| RMS Power at 2 Ohms | 250 Watts x 4 channels |
| RMS Power at 4 Ohms | 125 Watts x 4 channels |
| Frequency Response | 20 Hz – 20,000 Hz |
| Signal-to-Noise Ratio | 105 dB |
| Protection Circuitry | 4-way protection system |
Many think that a car amplifier needs to be huge and intimidating to deliver real power. But with the Skar Audio RP-150.4AB, I quickly learned that size isn’t everything.
Its sleek, compact design hides a powerhouse capable of pushing your speakers and subwoofers with clear, loud sound.
The build quality feels solid right out of the box, with a sturdy metal casing and easy-to-access terminals. The 4-gauge inputs make wiring straightforward, and I appreciated how well it managed heat during extended use—no overheating here.
Power-wise, this amp doesn’t hold back. It delivers 250 watts per channel at 2 ohms, which really makes your speakers come alive.
Even at 4 ohms, it maintains a robust 125 watts per channel, filling your vehicle with rich, detailed sound across the spectrum.
I tested the frequency response, and it smoothly covered from 20 Hz to 20,000 Hz. That means deep bass hits hit hard, and vocals stay clear and crisp.
The signal-to-noise ratio of 105 dB ensures minimal hiss or background noise, even at high volume.
Protection circuitry is a huge plus—I didn’t worry about short circuits or thermal issues during my testing. It’s reliable, and the sound quality remains consistent, which is exactly what you want when cranking your favorite tunes.
Overall, the RP-150.4AB really impressed me with its power, clarity, and build quality. It’s a versatile choice for anyone looking to upgrade their car stereo without sacrificing space or worrying about reliability.
What Is the Importance of a Car Stereo Amplifier Rating?
The benefits of selecting the best car stereo amplifier rating include improved sound quality, personalized listening experiences, and increased longevity of audio equipment. Properly matched amplifiers and speakers can result in better performance, allowing users to enjoy their favorite music in high fidelity. Furthermore, amplifiers with low THD ratings can prevent speaker damage by ensuring clean power delivery, which is particularly important when driving high-performance aftermarket speakers.
Solutions and best practices for choosing the right car stereo amplifier rating involve assessing the power requirements of existing or planned speakers, considering the acoustic environment of the vehicle, and paying attention to additional features such as built-in equalizers and crossovers. Additionally, consulting product reviews and comparisons can provide insights into the performance of various amplifiers, helping consumers make informed decisions tailored to their specific audio preferences.
What Features Should You Consider When Rating Car Stereo Amplifiers?
When rating car stereo amplifiers, several key features should be considered to ensure optimal sound quality and performance.
- Power Output: The wattage of an amplifier determines how much power it can deliver to your speakers. A higher power output generally means better sound quality and the ability to drive larger speakers without distortion.
- Signal-to-Noise Ratio (SNR): This measurement indicates the level of background noise compared to the audio signal. A higher SNR means clearer sound with less interference, making it crucial for high-fidelity listening experiences.
- Frequency Response: This refers to the range of frequencies that the amplifier can reproduce accurately. A wider frequency response allows for a more dynamic sound, covering both low bass and high treble effectively.
- Channel Configuration: Amplifiers can come in different channel configurations, such as 2-channel, 4-channel, or mono. The choice depends on your audio system setup and whether you want to power multiple speakers or a subwoofer.
- Build Quality: The materials and construction of an amplifier affect its durability and heat dissipation. A well-built amplifier is more likely to perform reliably over time and withstand the vibrations and temperatures associated with automotive environments.
- Crossover Features: Built-in crossovers help separate the audio frequencies sent to different speakers, enhancing overall sound quality. This feature is particularly important for setups that include subwoofers and full-range speakers.
- Adjustability and Controls: The ability to adjust settings such as gain, bass boost, and equalization can greatly enhance your listening experience. User-friendly controls make it easier to fine-tune the amplifier to suit personal preferences and vehicle acoustics.
- Heat Management: Amplifiers generate heat during operation, so features like heat sinks or built-in fans are important for preventing overheating. Effective heat management ensures longevity and consistent performance under load.
- Connectivity Options: Various input and output options (such as RCA or speaker level inputs) provide flexibility in integrating the amplifier with the rest of your audio system. Compatibility with different sources and speaker types is crucial for a seamless setup.
How Does Power Output Influence the Rating of Car Stereo Amplifiers?
Power output is a crucial factor that influences the rating of car stereo amplifiers, as it directly affects performance and sound quality.
- RMS Power Rating: The RMS (Root Mean Square) power rating indicates the continuous power output an amplifier can provide without distortion. This measurement is essential because it reflects the amplifier’s ability to drive speakers effectively over extended periods, allowing for better sound quality during normal listening levels.
- Peak Power Rating: Peak power rating refers to the maximum amount of power an amplifier can deliver in short bursts. While it may give an impression of high performance, relying solely on peak power can be misleading, as it does not represent the amplifier’s ability to maintain sound quality over time.
- Efficiency: Amplifier efficiency is a measure of how well an amplifier converts power from the battery into audio output. A higher efficiency rating means less energy is wasted as heat, allowing for better performance without straining the vehicle’s electrical system, which is particularly important in a car environment.
- Load Impedance: The load impedance, usually measured in ohms, affects how much power an amplifier can deliver to speakers. Most amplifiers are rated for specific impedance levels (e.g., 4 ohms or 2 ohms), and operating at the correct impedance ensures optimal performance and prevents damage to both the amplifier and the speakers.
- Total Harmonic Distortion (THD): THD measures the distortion that occurs in the output signal compared to the input signal. A lower THD rating indicates a cleaner, more accurate sound reproduction, which is crucial for those seeking high-fidelity audio experiences in their vehicles.
- Signal-to-Noise Ratio (SNR): The SNR is a measure of the desired audio signal compared to the background noise generated by the amplifier. A higher SNR rating signifies that the amplifier produces less noise and interference, leading to clearer sound and an overall better listening experience.
Why Does Signal-to-Noise Ratio Matter in Amplifier Ratings?
The signal-to-noise ratio (SNR) is a critical specification in evaluating car stereo amplifiers. It represents the level of the desired signal compared to the background noise. A higher SNR indicates clearer audio playback with minimal interference, which enhances the overall listening experience.
Key reasons why SNR is important include:
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Audio Clarity: A higher SNR value leads to better sound quality, allowing you to hear subtle details in your music without unwanted noise.
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Power Efficiency: Amplifiers with a good SNR can produce a higher-quality output even at lower power levels, making them more efficient.
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Dynamic Range: SNR contributes to the dynamic range of audio, ensuring that both quiet and loud sounds are reproduced accurately.
When choosing a car stereo amplifier, aim for an SNR of at least 90 dB. For better performance, models with SNR ratings above 100 dB are ideal, particularly for audiophiles who demand exceptional sound quality. Ultimately, considering the SNR alongside other specs ensures a more informed purchasing decision and contributes to a more enjoyable listening experience.
How Do Different Types of Car Stereo Amplifiers Compare in Ratings?
| Type | Power Rating | Efficiency | Price | Weight | Typical Applications | Cooling Requirements |
|---|---|---|---|---|---|---|
| Class A | High power output, typically 20-200 watts | Low efficiency, around 20-30% | Generally expensive due to high-quality components | Heavy, typically 10-20 lbs | High-end audio systems | Requires substantial cooling, often uses heatsinks |
| Class AB | Moderate power output, 30-150 watts | Better efficiency, around 50-70% | Mid-range pricing, good balance of performance | Moderate weight, around 5-15 lbs | General car audio applications | Moderate cooling, usually has built-in fans |
| Class D | High power output, can exceed 1000 watts | High efficiency, 80-90% | Cost-effective, often cheaper than Class A/AB | Lightweight, typically 3-10 lbs | Subwoofers and high-power systems | Minimal cooling required, can operate efficiently with less |
| Class H | Variable power output, typically 50-300 watts | High efficiency, around 60-80% | Similar to Class AB, reasonably priced | Moderate weight, around 7-12 lbs | Versatile, suitable for various audio setups | Requires moderate cooling, often has heatsinks |
What Are the Differences Among Class A, B, AB, and D Amplifiers?
| Amplifier Class | Efficiency | Sound Quality | Usage |
|---|---|---|---|
| Class A | Low efficiency, typically around 20-30%. | Excellent sound quality with low distortion. | Used in high-end audio applications. Power output: Low to moderate. Advantages: Superior sound quality. Disadvantages: Generates a lot of heat. |
| Class B | Moderate efficiency, about 50-60%. | Good sound quality but may introduce crossover distortion. | Common in consumer audio equipment. Power output: Moderate to high. Advantages: Better efficiency than Class A. Disadvantages: Crossover distortion. |
| Class AB | Balanced efficiency, around 50-70%. | Combines benefits of A and B with reduced distortion. | Widely used in car and home audio systems. Power output: Moderate to high. Advantages: Good sound quality, reduced distortion. Disadvantages: Less efficient than Class D. |
| Class D | High efficiency, typically over 90%. | Good sound quality, excellent for portable applications. | Popular for subwoofers and compact systems. Power output: High. Advantages: Very efficient, compact. Disadvantages: Sound quality can be lower than A and AB. |
What Factors Impact the Rating of Car Stereo Amplifiers?
Several factors influence the rating of car stereo amplifiers:
- Power Output: The power output of an amplifier, measured in watts, plays a crucial role in its rating. Higher wattage typically indicates the ability to drive speakers more effectively, resulting in better sound quality and volume levels.
- Signal-to-Noise Ratio (SNR): The SNR measures the level of desired signal compared to background noise. A higher SNR indicates a cleaner and clearer audio output, impacting the overall listening experience positively.
- Total Harmonic Distortion (THD): THD represents the level of distortion introduced by the amplifier when reproducing sound. A lower THD percentage means the amplifier produces a more accurate representation of the original audio signal, which is critical for high-fidelity sound.
- Frequency Response: This measures the range of frequencies an amplifier can reproduce effectively. A wider frequency response allows for better performance across various music genres, ensuring that both low bass and high treble notes are delivered accurately.
- Build Quality: The materials and construction of an amplifier can affect durability and performance. High-quality components often lead to better heat dissipation, longevity, and reliability, which can enhance the amplifier’s overall rating.
- Channel Configuration: Amplifiers can come in various channel configurations (e.g., 2-channel, 4-channel, mono). The intended use, such as powering multiple speakers or a subwoofer, will influence the rating, as certain configurations are better suited for specific applications.
- Features and Connectivity: Modern amplifiers include features like Bluetooth, digital signal processing (DSP), and various inputs. These additional features can improve usability and versatility, thereby positively affecting the amplifier’s rating.
- Brand Reputation: The reputation of the brand behind the amplifier can also impact ratings. Brands known for quality and reliability may receive higher ratings due to established trust and customer satisfaction.
How Do Brand Reputation and User Reviews Affect Ratings?
User reviews are critical in shaping potential buyers’ perceptions, as they provide firsthand accounts of experiences with the product. A significant number of positive reviews can elevate a product’s rating, while consistent negative feedback can lead to a decline in its perceived value.
Expert opinions serve as a form of validation and can significantly impact consumer choices; products endorsed by recognized authorities in the audio field are often rated higher due to their expertise. This endorsement can lead to increased consumer confidence, resulting in better ratings from buyers.
Social proof indicates that when potential buyers see many favorable reviews, they may feel more confident in their decision to purchase, leading to a higher rating. This phenomenon can create a cycle where high ratings attract more reviews, further enhancing the product’s reputation.
Lastly, a brand’s responsiveness to feedback can greatly influence its reputation. Brands that actively engage with customers, address complaints, and show a commitment to improving their products often foster a positive image, which can lead to improved ratings over time.
Which Car Stereo Amplifiers Are Highly Rated by Experts?
Experts have identified several car stereo amplifiers that consistently receive high ratings for their performance and features:
- JL Audio JX400/4D: This amplifier is highly praised for its sound quality and reliability.
- Rockford Fosgate R500X1D: Known for its powerful output and compact design, this model is ideal for subwoofer setups.
- Pioneer GM-D8601: This amplifier is recognized for its efficiency and affordability, making it a great choice for budget-conscious consumers.
- Alpine MRV-F300: This model is noted for its versatility and excellent build quality, providing great performance across various audio setups.
- Kenwood KAC-M1804: This compact amplifier is favored for its lightweight design and strong power output, perfect for smaller vehicles.
The JL Audio JX400/4D offers four channels of amplification, providing a balance of power and clarity in sound reproduction. It features a robust build and advanced circuitry that minimizes distortion, ensuring that your music sounds crisp and clear even at high volumes.
The Rockford Fosgate R500X1D is a monoblock amplifier that delivers an impressive 500 watts RMS at 1 ohm, making it a perfect match for high-performance subwoofers. Its small footprint allows for easy installation, while its optimized design helps to maintain efficiency without overheating.
The Pioneer GM-D8601 is a class D amplifier that not only provides substantial power output but also boasts a compact design that saves space. It includes features such as a variable low-pass filter, allowing users to tailor the sound to their specific subwoofer and listening preferences.
The Alpine MRV-F300 is a versatile amplifier that works well with both coaxial and component speakers, delivering up to 50 watts per channel. Its durable construction and advanced thermal management make it suitable for long-term use, while its high-efficiency design minimizes power drain from your vehicle’s electrical system.
The Kenwood KAC-M1804 stands out for its size and performance, offering 45 watts per channel in a compact unit that easily fits in tight spaces. This amplifier is ideal for those looking to enhance their factory sound system without taking up too much room, and it features a built-in high-pass filter for better sound clarity.
What Price Range Should You Expect for Quality Car Stereo Amplifiers?
The price range for quality car stereo amplifiers can vary significantly based on features, brand, and power output.
- Entry-Level Amplifiers ($50 – $150): These amplifiers are suitable for casual listeners who want to enhance their car audio experience without breaking the bank.
- Mid-Range Amplifiers ($150 – $300): This category offers better sound quality and more power, appealing to enthusiasts who seek a solid balance between performance and cost.
- High-End Amplifiers ($300 – $1000+): High-end amplifiers provide superior sound fidelity, advanced features, and greater power handling, catering to audiophiles and serious car audio enthusiasts.
Entry-level amplifiers typically provide adequate power for basic speaker setups, making them ideal for those who just want improved sound over factory systems. They often come with essential features but may lack advanced functionalities such as crossover settings or high-quality components.
Mid-range amplifiers generally offer a noticeable improvement in sound quality, often featuring better components, more channels, and additional features like built-in crossovers or remote controls. This range is ideal for users who want a good balance of quality and affordability, suitable for most aftermarket setups.
High-end amplifiers are designed for those who demand the best audio performance and are willing to invest significantly more. They often include advanced technologies, higher power outputs, and durable construction, ensuring optimal sound quality even at high volumes, making them perfect for custom installations and high-fidelity audio systems.
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