Garage
Shop

See all parts that fit your 2001 A4

Rockford Fosgate GNRL-STAGE4

Stage 4 Audio System Upgrade Kit for select 2016-2019 General 1000 EPS Deluxe / 1000 EPS / 4 1000 EPS

Rockford Fosgate
Shop all Rockford Fosgate
highlight-star-icon

• Includes Marine Receiver, Four 6.5” Speakers (front and rear), a 4-Channel Amplifier, and a 10" Subwoofer
• Direct fit for a hassle-free installation, fitting perfectly into the Polaris RZR for seamless integration
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

See compatible vehicles Learn more about the gnrlstage4
No Fit Icon

Doesn't fit your 2001 A4

Similar items | Update vehicle | Vehicle store
Thanks , You Pay:

$3099.99

 with warranty
Starting at $151/mo with

Heads up

Your vehicle can use this product in multiple locations. Only a quantity of one can be selected from the product page. You will have the option to adjust the quantity within your cart.

shipping truck icon Free shipping in USA. Provide zip for delivery date.
Dollar Icon
VIP Product Get $310.00 in rewards to spend later
Quantity
In Stock.
Brand new

Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Swoosh Icon Icon of Swoosh

For over 25 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts

Loading...
86-9001 main

Metra 86-9001

1998-2006 Volkswagen/Audi/Mercedes Radio Removal Tool

5
-12.51%

$20.99

List price $23.99

DCPA723W main

Dual DCPA723W

7” Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto

4
-16.67%

$239.99

List price $287.99

Description


Rockford Fosgate brand icon

Authorized dealer

Product Details:

  • System includes a digital media marine receiver, four 6.5" marine speakers preloaded in custom-fit enclosures (front and rear), a 4-channel amp, and a 10" subwoofer with custom-fit enclosure
  • Designed and engineered to match and compliment the factory fit and finish of your vehicle
  • Speaker & subwoofer enclosures integrate with no loss of passenger space
  • Comes with all necessary mounting and installation hardware
  • Direct connect wiring harnesses
  • Low-voltage warning alert, so you won't accidentally drain your battery
  • CEA-2031 compliant
  • IPX-6 water resistant
  • Estimated Install Time: 4 Hours
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty
  • Compatible with select 2016-2019 General 1000 EPS Deluxe / 1000 EPS / 4 1000 EPS

PMX-2 Bluetooth Marine Digital Media Receiver

  • 2.7" TFT-LCD Display screen w/ auto-dimming backlighting
  • A2DP and AVRCP Bluetooth Wireless Streaming
  • Pandora Internet Radio app
  • Internal amplifier ratings:
    • Peak: 50 watts x 4 channel
    • RMS: 25 watts x 4 channel
  • AM/FM/WB tuner with 12 AM/18 FM/6 WB presets
  • Multi-region radio frequencies
  • MP3/WMA/FLAC playback via USB
  • 7-Band Graphic EQ
  • Selectable HP / LP / AP Crossovers with Selectable Slope 12 / 24 dB/Oct
  • Independent Subwoofer Level Control
  • Zone Control: 1 Zone / 1 Source (F/R or Sub)
  • Auxilary (RCA) and USB inputs with USB charging
  • 2 pairs of RCA preamp outputs

RM1652B 6.5" Full Range Coaxial Speakers

  • Injection molded mineral filled polypropylene cone
  • UV and Salt-Fog resistant santoprene surround
  • 1" LCP dome tweeter tweeters
  • Power Handling:
    • Peak: 300 watts per pair / 150 watts each
    • RMS: 150 watts per pair / 75 watts each
  • Impedance: 4-ohm
  • Frequency Response: 49 Hz - 20kHz
  • Sensitivity: 89 dB

RM1652W-MB 6.5" Full Range Moto-Can Speakers

  • High density poly‐ethylene enclosure with UV inhibitors
  • 360° rotational mounting capability
  • Includes safety lanyard
  • 1" bridge mounted tweeter
    • Peak: 300 watts per pair / 150 watts each
    • RMS: 150 watts per pair / 75 watts each
  • Impedance: 4-ohm
  • Frequency Response: 49 Hz - 20kHz
  • Sensitivity: 89 dB

RM110D2B 10" Marine Subwoofer

  • 100% UV stable ASA injection molded plastic parts
  • Injection molded mineral filled polypropylene cone
  • UV and Salt-Fog Resistant Santoprene surround
  • Moisture, tear, and fatigue-resistant Aramid fiber spider
  • Power Handling:
    • Peak: 400 watts
    • RMS: 200 watts
  • 2" aluminum voice coil
  • Impedance: Dual 2-ohm
  • Frequency Response: 25 - 250Hz
  • Sensitivity: 89dB

TM400X4ad 4-Channel Marine Amplifier

  • Differential inputs with high-level auto turn-on feature
  • Top-mounted controls
  • Dual fan cooled and dual extruded heat sinks
  • Marine grade two-part epoxy coating on circuit boards
  • Class-AD technology
  • Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Power Specifications
    • 4 ohm: 100 watts x 4
    • 2 ohm: 100 watts x 4
    • Bridged @ 4 ohm: 200 watts x 2
  • Total RMS power output: 400 watts
  • Frequency Response: 20-20,000 Hz
  • Total Harmonic Distortion (THD): <1%
  • Variable high-pass filter: 50 - 250 Hz, 24 dB/octave
  • Variable low-pass filter: 50 - 250 Hz, 24 dB/octave

Rockford Fosgate GNRL-STAGE4 Manual

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

The vehicle you have selected 2001 Audi A4 is not compatible. Change vehicle or See list of compatible similar products


Loading...
BV850ACP main

Boss Elite BV850ACP

6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto with Backup Camera

5
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

2
-16.67%

$349.99

List price $420.00

iLX-W650 main

Alpine iLX-W650

7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)

123
-5.72%

$329.95

List price $349.95

DMH-W4660NEX main

Pioneer DMH-W4660NEX

6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)

2
-20.00%

$599.99

List price $750.00

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
MPK 163.3 main

Hertz MPK163.3

600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System

2
-14.89%

$999.99

List price $1175.00


Best selling similar products

180-F3-2A small

SSV Works F3-2A (180-F3-2A)

• Includes one powersports receiver and two 6.5" front kick panel speakers and two 6.5" loaded rear cage speaker pods and hardware accessories
• Direct fit for a hassle-free installation, fitting perfectly into select 2015-2022 vehicles from Can-Am for seamless integration
• Designed to withstand harsh outdoor environments
• water resistant
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

$799.99

List price $799.99

RNGR18-STG1 small

Rockford Fosgate Stage 1 RNGR18-STG1

• Gauge Mount Stereo with Two 6-1/2" Speakers
• Bluetooth Enabled Headunit
• Plug and Play design for easy installation
• Complete All-In-One Design
• IPX-6 Water Resistant
• Large Easy to Use Buttons

(3)

$659.99

List price $659.99

GM-PPKT-1 small

Metra GM-PPKT-1

• Includes three pairs of speakers, one loaded 12" subwoofer enclosure, one amplifier, and harnesses and installation accessories
• Direct fit for a hassle-free installation, fitting perfectly into the for seamless integration
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

$2499.99

List price $2777.99

MBQD-STG4A-1 small

MB Quart MBQD-STG4A-1

• Includes a digital media marine receiver, two 6.5" speakers, and a 4-channel amplifier
• Direct fit for a hassle-free installation, fitting perfectly into the select 2017-2025 vehicles from Can-Am for seamless integration
• System is designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

$1079.49

List price $1399.99

X3-5K small

SSV Works X3-5K

• Includes one digital media marine receiver, two 4" dash speaker pods, two 6.5" cage mount speaker pods, one loaded 10" enclosure, two amplifiers, and mounting hardware
• Direct fit for a hassle-free installation, fitting perfectly into select 2017-2021 vehicles from Can-Am for seamless integration
• Designed to withstand harsh outdoor environments
• Plug and Play design for easy installation
• Ride Command Integration capable

$2299.99

List price $2299.99

RNGR18-ROOF4M2 small

Rockford Fosgate RNGR18-ROOF4M2

• Includes a digital media marine receiver, four 8" marine speakers and two 10" subwoofers preloaded in custom-fit enclosures, and one 5-channel amplifier
• Direct fit for a hassle-free installation, fitting perfectly into select 2018-2025 Ranger Crew XP and Ranger Crew 1000 / 1000 Premium + Winter Prep Package / 1000 Premium / 1000 EPS (2-door models) for seamless integration
• System is designed to withstand harsh outdoor environments
• Color Optix controller provides endless customization of your included RGB lighting
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

$5499.99

List price $5499.99

MBQX-STG5-1 small

MB Quart MBQX-STG5-1

• Includes a digital media receiver, two 6.5" speakers in custom-fit enclosures, two 6.5" speaker pods
• Also includes 10" subwoofer, 4-channel and monoblock amplifiers
• Direct fit for a hassle-free installation, fitting perfectly into the Can-Am Maverick X3s for seamless integration
• System is designed to withstand harsh outdoor environments
• Marine digital media receiver with LED backlight screen
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

$1784.99

List price $2249.99

RNGR-STAGE3 small

Rockford RNGR-STAGE3

• Includes Marine Receiver, Four 6.5” Speakers, 4-Channel Amplifier, and 10" Subwoofer
• Direct fit for a hassle-free installation, fitting perfectly into the Polaris RANGER for seamless integration
• Direct connect wiring harnesses
• Designed to withstand harsh outdoor environments
• Comes with all necessary mounting and installation hardware

$2299.99

List price $2299.99

RZR14RC-STG4 small

Rockford Fosgate Stage 4 RZR14RC-STG4

• Designed specifically for Ride Command™ equipped Polaris RZRs
• Includes Ride Command Audio interface, Two 6.5” Speakers, Two 6.5" Tower Speakers, a 5-Channel Amplifier, and a 10" Subwoofer
• Direct fit for a hassle-free installation, fitting perfectly into the Polaris RZR for seamless integration
• System is designed to withstand harsh outdoor environments
• Color Optix™ controller provides endless customization of your included RGB lighting
• Plug and Play design for easy installation
• Comes with all necessary mounting and installation hardware

$2299.99

List price $2299.99

RZR14-STG2 small

Rockford Fosgate Stage 2 RZR14-STG2

• Complete Element Ready™ audio system
• No drilling or cutting required
• Plug-n-Play wiring harnesses for RZR models
• Includes AM/FM antenna

$1199.99

List price $1199.99

Specifications & Details


Package Specifications
Series
Stage 4 Series
Compatible vehicle types
ATV/UTV
Included Components
Digital Media Stereo
Pair of Tower Speakers
Pair of Speakers in Custom-Fit Enclosures
Custom Fit Loaded Subwoofer Enclosure
Marine/Powersports Amplifier
IPX Rating
IPX-6
Marine Certified
Yes
Stereo Receiver Specs & Details
Receiver specs and details
2.7” LCD bluetooth stereo receiver that can connect to your phone, is water-resistant and has a backup camera input
Key Features
SiriusXM Ready
USB input
Aux input
Bluetooth Features
Audio Streaming (A2DP)
Volume Control Type
Knob
Wireless Remote
Yes
Preamp RCA Outputs
2 Sets (4-Channel)
Dedicated Subwoofer Preamp RCA Output
No
Preamp Voltage
2 volts
Built-In Equalizer
7-Band Graphic EQ
FM Presets
18
AM Presets
12
WB Presets
6
LCD Screen Size
2.7"
Peak Power Output
50 watts x 4 channel
RMS Power Output
25 watts x 4 channel
Inputs
Auxiliary (Rear)
USB (Rear)
Speaker Specs & Details
Speaker specs and details
6.5" marine speakers preloaded into front enclosures, and 6.5" roll-bar tower speakers. RM1 series mini speaker enclosure and clamp system, this kit adds the last bit of sound that you need. Simply plug in the harness, mount the speakers and rock out.
Number of Speakers
4
Illumination
None
Speaker Grilles
Yes
Design
Full system
Amplifier Specs & Details
Amplifier specs and details
400 Watt 4-channel amplifier with high efficiency Class-ad technology and a conformal coated pc board designed for motorsport and marine applications.
Number of Channels
4-Channel
Total Peak Power Output
400 watts
Total RMS Power Output
400 watts
Amplifier Class
AD
Subwoofer Specs & Details
Subwoofer specs and details
10" 1600 watt marine subwoofer preloaded in a custom-fit front subwoofer enclosure with mounting bracket. Features a color molded grille that is 100% UV stable. This model can be used in sealed, vented or infinite baffle installations.
Subwoofer Size
10"
Number of Subwoofers
1
Subwoofer Peak Power
400 watts
Subwoofer RMS Power
200 watts
Subwoofer Grille
Yes - Included
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

GNRL-STAGE4

Weight:

40.00lbs

Internal SKU:

gnrlstage4

Internal Product ID:

170923

Customer Ratings & Reviews


Rockford Fosgate GNRL-STAGE4 thumbnail image

5 star
0%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found

CNDV-800HD small

Pioneer CNDV-800HD

2008 Update Disc for HDD-Based (Non-DVD) Pioneer Navigation Units

$54.99

List price $129.99

DPX503 small

Kenwood DPX503 (DPX-503)

Double DIN In-Dash CD/MP3/WMA Receiver with Remote

(15)

$239.99

List price $369.99

010-10344-00 small

Garmin 010-10344-00 Audio Jack Adapter

2.5mm to 3.5mm Audio Jack Adapter for Rino Units

$8.99

List price $12.99

DRQC20AC-TN small

MTX Audio Thunderform DRQC20AC-TN (Charcoal, Amplified)

select 2002-2018 vehicles from Ram, Dodge Amplified 2 10" 4 ohm Vehicle Specific Thunderform Subwoofer Enclosure

(2)

$899.95

List price $802.95

GXY MOBILE 100 small

ScyTek Galaxy Mobile 100

Smart Phone Controlled Car Security/Remote Start System w/ GPS Tracking

$239.99

List price $399.99

XA-BLUAIC2-1 small

JL Audio XA-BLUAIC2-1

1 ft. 2-channel Audio Interconnect Cable

(2)

$7.99

List price $49.99

PTID-7350NRBT small

Power Acoustik PTID-7350NRBT

Double DIN 7" TFT-LCD Touchscreen Monitor with Built-in Bluetooth, Navigation Ready, DVD, DivX, CD, MP3 Player and Remote

(20)

$239.99

List price $689.99

GN601S-25 small

Tsunami GN601S-25 (Silver)

Tsunami GN601S-25 Silver 1/0 AWG Precision Wound Power/Ground Cable

(4)

$134.99

List price $189.99

CAPR small

1.2 Farad Digital Capacitor -- RED -- Pixelon CAPR

$44.99

List price $99.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2002 Ford Windstar

2001 Audi A4

2011 Ford Edge

2024 Nissan Altima

2003 Ford Excursion

2021 GMC Terrain

2015 Ford Flex

2014 Ford Taurus

2012 Subaru Forester

2015 Dodge Charger

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.