ROCKFORD FOSGATE AG0700338 School Punch Mosfet Amplifier

( Brand: Rockford Fosgate ), ( Manufacturer Part Number: AG0700338 ), ( Model: 45HD ), ( Part Type: Punch Amplifier ), ( Rms Power: 45w )

Review ROCKFORD FOSGATE Old School Punch 45 Hd Mosfet Cib Matching Serial Usa

The **Rockford Fosgate AG0700338 School Punch 45 MOSFET C.I.B. Amplifier** is a high-performance, high-efficiency powerhouse designed to deliver uncompromising audio clarity and robust power output for demanding audio systems, particularly in automotive and mobile applications. Engineered with Rockford Fosgate s signature precision and reliability, this Class-D MOSFET amplifier is built to push boundaries while maintaining exceptional durability and thermal management. The **4500-watt RMS** (4 ohms, 1% THD) power output ensures that it can handle even the most aggressive audio setups, from high-gain amplifiers and powerful subwoofers to multi-channel speaker configurations, all while operating with remarkable efficiency. Its **MOSFET-based design** not only reduces power consumption and heat generation compared to traditional Class-AB amplifiers but also enhances longevity, making it an ideal choice for long-term use in vehicles where space and reliability are critical.

The **C.I.B. (Continuous Input Bias)** feature is a standout innovation that eliminates the need for external bias resistors, simplifying installation and reducing the risk of electrical interference or ground loops. This design choice also contributes to cleaner signal integrity, ensuring that the amplifier s output remains pristine even under heavy loads. Built into a rugged, **metal chassis** with robust mounting points, the School Punch 45 is designed to withstand the rigors of automotive environments, including vibration, temperature fluctuations, and electrical noise. The amplifier s **high-current MOSFETs** and advanced cooling system featuring a large heatsink and efficient thermal management allow it to operate at peak performance without sacrificing stability or longevity.

For audiophiles and car audio enthusiasts who demand both power and precision, the AG0700338 is a versatile amplifier capable of driving **four channels** with exceptional clarity and dynamic range. Its **low distortion output** and wide bandwidth ensure that every nuance of your audio source whether it s crisp highs, deep bass, or intricate mids is reproduced with fidelity. The amplifier s **remote turn-on capability** and **fuse protection** add layers of convenience and safety, making it a practical yet high-performance solution for custom car audio systems, mobile DJ setups, or home theater applications. Whether integrated into a high-end sound system or paired with a powerful subwoofer for thunderous bass, the Rockford Fosgate School Punch 45 MOSFET amplifier stands as a testament to the brand s commitment to delivering power, efficiency, and reliability in every detail.

The Rockford Fosgate AG0700338 School Punch 45 MOSFET Class D amplifier is a popular choice among car audio enthusiasts, particularly for those looking to upgrade their sound system. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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1. **High Power Output**: The AG0700338 delivers a robust 700 watts RMS per channel at 4 ohms and 1,400 watts RMS per channel at 2 ohms when bridged. This makes it suitable for high-gain systems, including modern high-efficiency speakers and subs. The high power handling ensures strong bass response and clear highs, even with demanding loads.

2. **MOSFET Technology**: Class D MOSFET amplifiers are known for their efficiency, reliability, and low heat output compared to traditional Class AB designs. The MOSFET transistors in this amp are designed to handle high currents without overheating, reducing the risk of failure over time. This also contributes to better longevity and lower operating costs.

3. **Bridged Mode Operation**: The ability to bridge the amplifier (connecting two channels to drive a single load) doubles the power output to 1,400 watts RMS at 2 ohms. This is particularly useful for single-subwoofer setups or high-efficiency speaker systems where bridging provides a significant power boost.

4. **Durability and Build Quality**: The School Punch series is renowned for its rugged construction, designed to withstand the harsh conditions of a car environment. The amp features a sturdy metal chassis, robust wiring, and high-quality components that are less likely to fail due to vibration or temperature fluctuations.

5. **Remote Turn-On and Control**: The AG0700338 includes a remote turn-on feature, allowing it to be powered on and off via a signal from the car s audio system or a separate remote control. This is a convenient feature for users who want to avoid manually turning the amp on and off.

6. **Compatibility with Modern Systems**: The amp is designed to work well with high-gain components, including modern amplifiers, high-efficiency speakers, and subs. It can handle the demands of high-sensitivity systems without clipping or distortion, making it versatile for various setups.

7. **Positive User Feedback**: Many users praise the AG0700338 for its clean sound, reliability, and ability to drive demanding loads without overheating. It is often recommended for enthusiasts who want a powerful yet durable amplifier for their car audio systems.

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1. **Size and Installation Space**: The AG0700338 is a relatively large amplifier, measuring approximately 14.5 inches in length, 7.5 inches in width, and 3.5 inches in height. This can make installation challenging in vehicles with limited space, particularly in smaller cars or trucks. Users may need to modify their trunk or cargo area to accommodate the amp.

2. **Weight**: The amplifier is heavy, weighing around 20-25 pounds. This can make installation more difficult, especially if you need to lift it into tight spaces or if you re working alone. The weight may also require additional support or mounting considerations to ensure stability.

3. **Price**: While the AG0700338 is competitively priced for a high-power MOSFET amp, it is still an investment. For users on a tight budget, there may be more affordable alternatives that offer similar power outputs or features. However, the amp s durability and performance often justify the cost for serious car audio enthusiasts.

4. **No Built-in Fuse Block**: Unlike some other amplifiers in the School Punch series, the AG0700338 does not include a built-in fuse block. This means users must provide their own fuses and wiring to meet the amp s power requirements, which can add complexity to the installation process.

5. **Limited Input Options**: The amp features a single RCA input and a preamp output, which may be limiting for users who want to connect multiple sources or use additional processing. While this is not a dealbreaker for most users, it may require additional equipment (such as a preamp or signal splitter) for more complex setups.

6. **Heat Dissipation**: Although MOSFET amplifiers are more efficient than Class AB amps, they can still generate heat, especially when operating at high power levels. Proper ventilation and installation in a well-ventilated area are essential to prevent overheating. Users may need to invest in additional cooling solutions, such as heat sinks or fans, depending on their installation environment.

7. **No Built-in Subwoofer Filter**: The AG0700338 does not include a built-in low-pass filter for subwoofers. Users must provide their own filter or rely on external filtering to protect their subwoofers and ensure clean bass output. This can add an extra step to the installation process.

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The Rockford Fosgate AG0700338 School Punch 45 MOSFET amplifier is a powerful, reliable, and durable choice for car audio enthusiasts who prioritize high power output, efficiency, and longevity. Its MOSFET technology ensures low heat output and high efficiency, while its robust construction makes it well-suited for the demanding environment of a vehicle. The ability to bridge the amp for even higher power output and its compatibility with high-gain systems further enhance its appeal.

However, the amp s size, weight, and lack of certain features (such as a built-in fuse block or subwoofer filter) may pose challenges for some users, particularly those with limited installation space or budget constraints. Additionally, the need for proper ventilation and additional wiring can add complexity to the setup process.

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The Rockford Fosgate AG0700338 School Punch 45 MOSFET amplifier is an excellent choice if you are looking for a high-performance, durable amplifier that can handle demanding car audio systems. It is particularly well-suited for users who:

- Need a powerful amplifier for high-gain components or single-subwoofer setups.

- Prioritize reliability and longevity in a rugged environment.

- Are willing to invest in proper installation, including ventilation and wiring.

- Do not require advanced features like multiple inputs or built-in filters.

If your vehicle has adequate space and you are prepared for the installation challenges, the AG0700338 is a strong recommendation. For users with limited space or budget, consider alternatives such as the Rockford Fosgate R1000X3 or the Kicker 400C-4, which offer high power outputs in more compact or affordable packages. Always ensure that your installation meets or exceeds the amp s power and wiring requirements to maximize performance and safety.

Details:

The matching serial number ensures authenticity and compatibility with your vehicles electronics. With 45W RMS power output and 2 channels, this delivers powerful clear audio performance. Mole connector pigtail included The Old School Rockford Fosgate Punch 45 HD MOSFET is a vintage car audio amplifier known for its high-quality sound and durability.

part #: ag0700338 prices

• $292.50-$425.00

specifications caramplifieca:

• brand: Rockford Fosgate
• mpn: Ag0700338
• model: 45hd
• part type: Punch Amplifier
• rms power: 45w

shipping caramplifieca:

• type: Calculated
• service: USPS Ground Advantage
• transit: 5-9 Days
• class: Standard
• cost: $25.55
• carrier: USPS

seller caramplifieca:

• city: Austin, Texas
• # reviews: 168
• rating: 100.0%

payments caramplifieca:

• other
• wallet: Paypal
• credit card: Mastercard

returns caramplifieca:

• policy: No Returns

general caramplifieca:

• condition: Used
• Vehicle Electronics GPS > Car Audio > Car Amplifiers

offer caramplifieca:

• availability: In Stock
• started: May 11, 2026
• options: Ship-to-home
• best offers: True
• sold: 0
• quantity: 1

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