1. Car Audio Signal Processors On Sale
  2. sku: 1141511842016504
  3. ROADMASTER EA-400NI

ROADMASTER EA-400NI Equalizer Amplifier Equalizer/

Ea-400ni Roadmaster Ea 400ni 100 Watt Equalizer/ Amp

( Brand: Roadmaster ), ( Manufacturer Part Number: EA-400NI ), ( Part Type: Equalizer Amplifier )

Review ROADMASTER Ea 400ni 100 Watt Equalizer/ Amp

The Roadmaster EA-400NI is a powerful equalizer and amplifier system designed to deliver high-quality audio performance for cars, trucks, and SUVs. This versatile 4-channel amplifier is capable of producing a total of 400 watts RMS (Root Mean Square) power, making it ideal for powering subwoofers and full-range speakers.

The EA-400NI is equipped with a built-in 12db/octave crossover, allowing for precise frequency division between high and low-frequency drivers. Each channel features adjustable low-pass and high-pass filters, enabling customized tuning for different speaker setups. The amplifier also includes a bass boost control, adding an extra 0-12dB of low-frequency enhancement.

The Roadmaster EA-400NI features a Class AB circuit design, which provides excellent power efficiency and thermal management. It's also engineered with thermal protection, short-circuit protection, and overload protection to ensure safe and reliable operation. The amplifier's chassis is made of heavy-duty aluminum, ensuring durability and heat dissipation.

This amplifier is designed for easy installation, with gold-plated screw-terminal connections for secure and reliable wiring. The compact size, measuring 13.5 inches in length, 10 inches in width, and 2.5 inches in height, makes it suitable for most vehicles, including those with limited space.

The EA-400NI is also equipped with a detachable wired remote control, allowing for quick and convenient access to the amplifier's crucial functions. The remote control features an LCD display, making it easy to monitor gain, bass boost, and other settings.

This amplifier is compatible with a wide range of speakers and subwoofers, making it an excellent choice for customizing the audio system in your vehicle. With its powerful output, adjustable filters, and user-friendly features, the Roadmaster EA-400NI is the perfect solution for those seeking superior audio performance on the road.

The Roadmaster EA-400NI equalizer/amp is a popular choice for those looking to enhance their car audio system. Here are some pros and cons to consider before making a purchase:

Pros:

1. Powerful: The Roadmaster EA-400NI delivers 400 watts RMS of power, which is sufficient for most car audio systems.

2. Versatile: This equalizer/amp comes with various preset equalizer curves and a subsonic filter, allowing users to customize their sound to their preferences.

3. Easy to Install: The Roadmaster EA-400NI has a standard size chassis that fits in most cars, and it comes with all the necessary mounting hardware.

4. Durable: The Roadmaster EA-400NI is built to last, with a heavy-duty aluminum chassis and high-quality components.

5. Affordable: Compared to other equalizers and amps in its class, the Roadmaster EA-400NI is relatively affordable.

Cons:

1. Limited Inputs: The Roadmaster EA-400NI only has two RCA inputs, which may not be enough for some users who want to connect multiple audio sources.

2. No Bluetooth Connectivity: This equalizer/amp does not have Bluetooth connectivity, so users will need to connect their audio sources using RCA cables.

3. No Display: The Roadmaster EA-400NI does not have a display, which may make it difficult for some users to adjust the equalizer settings.

4. No Remote Control: This equalizer/amp does not come with a remote control, which may be inconvenient for some users.

Conclusion:

The Roadmaster EA-400NI is a powerful and versatile equalizer/amp that is easy to install and affordable. However, it has some limitations, such as a lack of inputs, Bluetooth connectivity, display, and remote control. If these features are not a priority for you, then the Roadmaster EA-400NI could be a great choice for enhancing your car audio system.

Recommendation:

If you're looking for a powerful and affordable equalizer/amp with customizable equalizer settings, the Roadmaster EA-400NI could be a good option for you. However, if you require more inputs, Bluetooth connectivity, a display, or a remote control, you may want to consider other options in the market. Ultimately, it's essential to weigh the pros and cons and choose the product that best fits your needs and budget.

Details:

Brand New.

part #: ea400ni price

  • $89.99

specifications signaprocess:

  • brand: Roadmaster
  • mpn: Ea-400ni
  • part type: Equalizer Amplifier

payments signaprocess:

  • wallet: Paypal
  • other
  • credit card: Diners-club

shipping signaprocess:

  • class: Standard
  • service: USPS Ground Advantage
  • cost: $14.40
  • type: Calculated
  • transit: 5-10 Days
  • carrier: USPS

general signaprocess:

  • Vehicle Electronics GPS > Car Audio > Signal Processors
  • condition: New

seller signaprocess:

  • rating: 0.0%
  • city: Guyton, Georgia
  • # reviews: 0

offer signaprocess:

  • best offers: True
  • sold: 0
  • started: March 5, 2025
  • availability: In Stock
  • options: Ship-to-home
  • quantity: 1

returns signaprocess:

  • policy: No Returns
part type: equalizer amplifier,
category: electronics > vehicle electronics gps > car audio > signal processors, sku: 1141511842016504,

Roadmaster EA-400NI Is Similar To:

  • (55.9% similar) The box is in rough condition. With a wattage of 4 this amplifier is capable delivering clear and crisp audio, perfect for enhancing your car audio experience. See photos for condition. The vintage Roadmaster RA400N 400 watt amplifier is a new open box car audio signal processor from Taiwan...(November 8th, 2025)
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1 offer $89.99 USD
  • Offer #1: $89.99 price + $13.79 shipping estimate = $103.78* total. In its new-in-box condition, this product is perfect for car audio enthusiasts looking to enhance their in-car listening experience with a touch of nostalgia. The Vintage ROADMASTER EA400NI 100 Watt Amp/Equalizer with Fader Control is a classic piece of in-car entertainment technology.+$13.79 shipping

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