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4 Channel Full Range Amplifier

MDX400.4 2 Ohm

(5 customer reviews)
In stock
  • Full Range Amp
  • MINI 4 Channel
  • 4x 100 Watts 2Ω

Original price was: $99.89.Current price is: $79.91.

In stock

PRICE FOR SINGLE UNIT

SKU: MDX400.4 2 Ohm Category: Tag:

Features

Features

The mini MDX400.4 2 Ohm delivers 400 Watts RMS power over 4 channels in a compact, modern amplifier.

Designed for high performance systems that require high power output but have very little space to spare, the MDX Series features exclusive and patented technologies that ensure a high definition sound quality in the most compact and reliable design.

Engineered to be the most efficient amplifier able to deliver impressive power output while minimizing the strain on your electrical system. This means you can enjoy the benefits of high power performance without draining your battery quickly.

MMDX400.4 2 Ohm New Mini 4 Channel Amplifier 100 x 4
  • COMPACT MINI DESIGN – A small footprint mini heavy duty heatsink make this micro amplifier easy to install anywhere in vehicles, motorcycles, 4-wheelers: Overall 4.25″ Width by 3.50″ Length and only 1.95″ Height.
  • MULTICHANNELS – 4 x 100 watts at 2 Ohm TRUE RMS certified at full range output Digital Class D Brazilian Technology, gives you the benefit of wiring multiple speakers and dividing the power per channel.
  • BRIDGEABLE – 2 Channel Bridged – Double the power output to your speakers by bridging two channels. 2x 200 Watts RMS at a minimum impedance of 4 Ohms per bridged channel.
  • INNOVATION – The latest technology on surface mount components ensures best performance against vibration and superior sound quality, allowing enthusiasts and competitors to build the system of their dreams.

MDX400.4-2-Ohm-Highlight-Channel

Its multichannel technology eliminates the need for multiple amplifiers, when you can use this amplifier in 4, 3 or 2 channel configurations.

The MDX Series is ideal for motorsport applications such as custom motorcycles, powerwheels, ATVs and Slingshots!

Channels 4 Channel
Rated Power at 2 Ohm 4x 100 Watts RMS
Rated Power at 4 Ohm 4x 70 Watts RMS
Bridged Rated Power at 4 Ohm 2x 200 Watts RMS

MDX400.4-2-Ohm-Highlight-Fan-and-Heatsink

High Output that takes up little space!

Featuring a mini heavy-duty heatsink, as well as a built-in cooling fan, this amplifier runs cool under even the most demanding playlists.

At only 0.87 lbs allows any custom system to achieve the highest performance and weight ratio possible.


PRV Audio MDX400.4 2 Ohm MINI 4 Channel Car Audio Amplifier 4 x 100 Watts RMS at 2 Ohm

Popular Installation configurations with this amplifier:

4 Channel Configuration for 4 Ohm Components – Stereo System
Its 4 channels allow you to install 1x 4 Ohm speakers or tweeters one per channel, giving up to 70 watts per component.
Perfect for Car Stereo, using TW150SD-4 as tweeters and RS65-PRO as mids.

MDX400.4-2-Ohm-Below-The-Fold-Highlight-8x8-8-Ohm

4 Channel Configuration for 4 Ohm Components
Its 4 channels allow you to install 2x 4 Ohm speakers, drivers or tweeters in parallel per channel, giving up to 50 watts per component.

MDX400.4-2-Ohm-Installation-Instructions-4x4-8-Ohm

2 Channel Configuration (Bridged) for 8 Ohm components
Its high power output channels allow you to install 2x 8 Ohm speakers or drivers in parallel per channel, giving up to 100 watts per component.

MDX1200.4-2-Ohm-Installation-Instructions-Bridged-2x2-4-Ohm

Before Installing:

You must follow the instructions for the product’s installation to guarantee optimal performance. If you have any questions, get in touch with us. Before using the amplifier, always follow these guidelines:

Make sure the amplifier is switched off before adding or removing any connections. This prevents possible damage to equipment.

Keep all cables as far away as possible from the ignition cables, electronic injection modules and starter switch since they may cause noise interference; Minimum recommended installation distance between amplifier is 1.25”.

Always use OFC 8 AWG Copper wire for power and ground and minimum of 16 AWG speaker wire and good quality connectors. Copper-clad aluminum wire (CCAW) must not be used. This guarantees reliability and performance.

To avoid damaging the cables, make sure that they do not touch sharp metal edges. Important: For this amp use a 25A fuse 12 inches away from the battery as a safety precaution.

The power rating data is based on equipment from the PRV Audio Group laboratory. Rated power tested with 60Hz to 1KHz sinusoidal signal and THD <= 1%, with resistant load referring to the indicated measurements. The electronic components and the manufacturing process can present manufacturing variations, thus leading to a variation in the measurements made. This amplifier is designed to perform on music applications ( with speakers ), any load test ( resistant load ) is not recommended.

PRV Audio products are guaranteed for a period of ONE (1) YEAR from the date of original purchase against any manufacturer’s defects in material and workmanship under normal use.

Technical Details

GENERAL SPECIFICATIONS

Impedance 2 Ohm per Channel
Channels 4 Channel
Rated RMS Power at 14.0 V at 2 Ohm 4x 100 Watts RMS
Rated RMS Power at 14.0 V at 4 Ohm 4x 70 Watts RMS
Bridged Rated RMS Power at 14.0 V at 4 Ohm 2x 200 Watts RMS
Average Efficiency 84%
Operating Voltage 9 to 16 Volts
Musical Current Draw 20 A
Minimal Power Wire Input (OFC) 8 Gauge wires
Built-in Crossover Fixed HPF & LPF at 80 Hz
Minimal Speaker Wire Output 16 Gauge
Frequency Response(-3dB) 10 - 20,000 Hz
Min. Input Sensitivity for Max. Output 0.2 to 2v
Signal Input RCA Cables
Signal to Noise >90 dB
Protection System High Temperature / Short circuit on Output
Heat Sink Type Mini Heavy Duty Cast Aluminum
Dimensions ( Width x Depth x Height ) 4.25″ x 3.50″ x 1.95″
Weight 0.87 Lbs
The power rating data is based on equipment from the PRV Audio Group laboratory. Rated power tested with 60Hz to 1kHz with THD+N to ≤1 %, with resistant load referring to the indicated measurements The electronic components and the manufacturing process can present manufacturing variations, thus leading to a variation in the measurements made. This amplifier is designed to perform on music applications ( with speakers ), any load test ( resistant load ) is not recommended.

Product Video

MDX400.4 2 Ohm

MDX400.4 2 Ohm Product Overview ⬇️ DOWNLOAD

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5 reviews for MDX400.4 2 Ohm

4.8
Based on 5 reviews
5 star
80
80%
4 star
20
20%
3 star
0%
2 star
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1 star
0%

Customer Images

Video #1 from Jason Martinez
Video #1 from Jason Martinez

Jason Martinez

This small amp is perfect for a portable Boombox I built, powerful while having a compact package. Leaves a ton of room to upgrade other things in my build.

Video #1 from Jason Martinez
1-5 of 5 reviews
  1. Used with tw150 se tweeters and rs65 pro. They sound great.

  2. This small amp is perfect for a portable Boombox I built, powerful while having a compact package. Leaves a ton of room to upgrade other things in my build.

    Video #1 from Jason Martinez
  3. Scary

    I’m a PRV fan, never had an issue, but this amp (MDX400.4 2 Ohm) is really tiny. It works fine, great power I just hope I have no problems with it

  4. This amp is so small!! But it is also so powerful so don’t let the size fool you. It can fit anywhere. Perfect for tight areas.

  5. Super Pequeña pero poderosa,señal de audio limpia

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Can it push a subwoofer Wayne Prince asked on May 19, 2026

You can sure wire one subwoofer that is 4 Ohm with single voice coil on its bridged channel at 4 Ohm - giving 200 Watts to the sub! but the best amplifier for subwoofer is the RS500 BASS Amps

PRV Customer Service answered on June 1, 2026 store manager
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How many 6.5 speakers can it plays at once Al asked on May 14, 2026

You can wired 4 to 8 speakers to this amplifier, When you are using a 4 Ohm mid you can have 1 or 2 per channel, as it is on the wiring diagram above! You can use any 4 Ohm components combination: mids, coaxials, tweeters or drivers

PRV Customer Service answered on May 18, 2026 store manager
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