• Home
  • PRV Audio QS400.4 2 Ohm QS Series 4-Channel Full-Range Amplifier 100W

PRV Audio QS400.4 2 Ohm QS Series 4-Channel Full-Range Amplifier 100W

PRV AudioPart # 294-3518
Model: QS400.4 2 Ohms

The PRV Audio QS400.4 is a compact 4-channel Class D car amplifier delivering clean, reliable 100 W RMS per channel (2 Ω) in a minimal footprint—perfect for full-range audio setups or bridged subwoofer use. It’s engineered for high-efficiency performance, fitting easily into tight installations without overheating.

Key Features

  • 4×100 W RMS output at 2 Ω stable for consistent power delivery
  • Bridgeable to 2×200 W for added flexibility with subwoofers
  • A high efficiency of 80% reduces strain on vehicle electrical systems
  • Compact aluminum chassis (4″×5.4″×2″) fits into confined spaces
  • Built‑in 90 Hz HPF/LPF crossover provides clean frequency separation
  • Heavy-duty cast-aluminum heatsink stays cool under load
  • Frequency response spans 20 Hz–25 kHz for full-range audio coverage
Your Price: $79.91
MSRP: $99.89
Save $19.98 (20%)
Bulk Pricing
In Stock
Get Notified When Available

We'll send you an email when PRV Audio QS400.4 2 Ohm QS Series 4-Channel Full-Range Amplifier 100W is back in stock or available for preorder.

Ships next business day. Details
Free Shipping available on orders over $99.00 in the US. Details
60 Day No Hassle Return Policy

Overview

PRV Audio QS400.4 2 Ohm QS Series 4-Channel Full-Range Amplifier 100W

The QS Series amplifiers are built specifically for mids and highs, making them ideal for powering high-output stuntwalls, custom door panels, or any large-scale system demanding louder and more articulate sound reproduction for PRO Audio loudspeakers.

QS Series amplifiers focus on efficient engineering, delivering full-range frequency response performance at an affordable price.

The QS400.4 includes a regulated power supply that consistently delivers clean power while achieving an exceptional efficiency rate of 80%, all housed in a compact aluminum heatsink.

  • 4 x 100 watts true RMS at full range output using Digital Class D Brazilian Technology
  • 4-channel car amplifier stable at 2 ohms for flexible multi-speaker setups
  • High-efficiency full-range design to maximize output from your vehicle's electrical system
  • Compact chassis with 4″ x 5.40″ x 2″ dimensions for easy installation in tight spaces
  • Bridgeable to 2 channels for 2 x 200 watts RMS at 4 ohms minimum per bridged channel

Channels4 Channel
Rated RMS Power at 14.0 V at 2 Ohm
4x 100 Watts
Rated RMS Power at 14.0 V at 4 Ohm
4x 70 Watts
Bridged Rated RMS Power at 14.0 V at 4 Ohm
2x 200 Watts

The QS Series is our latest lineup of full bridge, high-power amplifiers engineered for outstanding performance and value. Models like the QS800.4 and QS1200.4 expand the series with even more power options to suit a wide range of needs.

With broad frequency response, these amplifiers are compatible with everything from subwoofers and midbass drivers to full-range speakers and super tweeters, making them a highly adaptable solution for everyday car audio systems.

Its compact heatsink design delivers high-fidelity sound with tight midbass and crisp, detailed highs. Ideal for users seeking powerful audio performance without breaking the bank, this amplifier combines sound quality with value.

The proprietary heat dissipation system keeps temperatures low, even during intense listening sessions.

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;
  • Always use 100% Copper wire and good quality connectors. 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 100Hz 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.

Specifications

  • Impedance: 2 Ohm
  • 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: 80%
  • Operating Voltage: 9 to 15 Volts
  • Musical Current Draw: 45 A
  • Minimal Power Wire Input: (OFC) 8 Gauge wires
  • Built-in Crossover: Fixed HPF & LPF at 90 Hz

  • Minimal Speaker Wire Output: 14 Gauge
  • Frequency Response(-3dB): 20 – 25,000 Hz
  • Min. Input Sensitivity for Max. Output: 200 mV
  • Signal Input: 2 Pair RCA
  • Signal to Noise: >90 dB
  • Protection System: High Temperature / Short circuit on Output
  • Heat Sink Type: Heavy Duty Cast Aluminum
  • Dimensions ( Width x Depth x Height ): 4.00″ x 5.40″ x 2.00″
  • Weight: 1.18 Lbs

The power rated data are based on equipment from the PRV Audio Group laboratory. Frequency reference of 100Hz to 1kHz with THD+N to ≤1 % in impedances referring to the indicated in each measurement. 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 Details

BrandPRV Audio
ModelQS400.4 2 Ohms
Part Number294-3518
UPC810075523898
Unit of MeasureEach
Weight1.35

Specifications

Q&A

Reviews

Manuals & Resources

California Prop 65

WARNING: Cancer and Reproductive Harm

www.P65Warnings.ca.gov