Garage
Shop

See all parts that fit your 2021 X4

DS18 FRP-1.2K4/RD

1200W RMS Class D FRP Series 4-Channel Car Amplifier (Red)

DS18
Shop all DS18
Limited time!
Out of stock
highlight-star-icon

• 120 watts x 4 channel @ 4 ohm
• 200 watts x 4 channel @ 2 ohm
• 300 watts x 4 channel @ 1 ohm
• Bridged: 350 watts x 2 channel @ 4 ohm
• Bridged: 500 watts x 2 channel @ 2 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable 4-Channel Amplifier

Learn more about the frp12k4rd
Universal fit Icon

Universal – fits most vehicles.

Similar items | Update vehicle | Vehicle store
List price $359.99
Thanks , You Pay:
-17%

$299.95

 with warranty
Starting at $28/mo or 4 payments of $75 Buy now, pay later and installment payment plans are offered by Afterpay and Affirm. Learn more

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.

Save 30% off an NVX XKIT44 Amp Kit at Checkout!
Dollar Icon
VIP Product Get $30.00 in rewards to spend later
Quantity
Out of stock - Order risk-free, cancel any time.
Brand new

Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Extend logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Hassle-free immediate replacement within minutes!
  • Easy online claims 24/7
  • Covers product breakdowns and failures
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
NVX - Worth the Envy - Direct to Consumer Car Audio

Loading...
Club 322F main

JBL Club 322F (SPKCB322FAM)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

1
-27.29%

$79.95

List price $109.95

REF3032CFXAM main

Infinity Reference 3032cfx (REF3032CFXAM)

150W Peak (50W RMS) 3.5" Reference Series 2-Way Coaxial 3-ohm Car Speakers

14
-42.32%

$74.95

List price $129.95

JS35K main

Jensen JS35K

150W Peak (50W RMS) 3.5" Apex Series 2-Way Coaxial 4-ohm Car Speakers

Limited time!
46CSC354 main

Kicker CSC35 (46CSC354)

180W Peak (60W RMS) 3.5” CS Series 2 Way Coaxial 4-ohm Speakers

16
-30.71%

$51.96

List price $74.99

V3 main

Cerwin-Vega V3

360W Peak (120W RMS) 3" Vega Series 2025 Edition 2-Way Coaxial 4-ohm Speakers

P132 main

Rockford Fosgate Punch P1 P132

80W Peak (40W RMS) 3.5” Punch Series 2 Way Coaxial 4-ohm Speakers

43
Limited time!
CF-275mt main

JL Audio CF-275mt

60W RMS 2.75" CF Series Custom-Fit Midrange 4-ohm Tweeters

12
-14.71%

$144.99

List price $169.99

51KSC3504 main

Kicker KSC35 (51KSC3504)

200W Peak (100W RMS) 3.5" KS Series 2 Way Coaxial 4-ohm Speakers

4
-11.11%

$79.99

List price $89.99

H735 main

Cerwin-Vega H735

500W Peak (60W RMS) 3.5" HED Series 2-Way Coaxial 4-ohm Speakers

34
-16.67%

$59.99

List price $71.99

TS-A878 main

Pioneer TS-A878

120W Peak (30W RMS) 3.5" A-Series 2-way 4-ohm Coaxial Speakers for select GM, Ford and Volkswagen models

31
-28.59%

$49.99

List price $70.00

Description


DS18 brand icon

Authorized dealer

Compact Powerhouse for Versatile High-Performance Audio

The DS18 FRP-1.2K4 is a high-efficiency Class D full-range multi-channel amplifier designed to deliver massive power from a compact, installation-friendly chassis. This versatile 4-channel powerhouse produces 120W RMS per channel at 4 ohms and is stable down to 1 ohm, where it delivers a staggering 4 x 300W. Precision-engineered with a four-layer PCB design and high-quality Tiffany RCA terminals, the amplifier features a comprehensive suite of protections—including thermal, overload, and short-circuit safeguards—alongside a smart cooling fan for sustained performance. With a wide frequency response of 10Hz to 200kHz and integrated selectable crossovers (HPF/FULL/LPF), this amplifier provides the clean, distortion-free output and flexible tuning options necessary to drive complex car audio builds with absolute authority.

Product Details:

  • FRP Series Class D 1 ohm Stable 4-Channel Amplifier
  • RMS Power Rating:
    • 4 ohm: 120 watts x 4 channel
    • 2 ohm: 200 watts x 4 channel
    • 1 ohm: 300 watts x 4 channel
    • Bridged: 350 watts x 2 channel @ 4 ohm
    • Bridged: 500 watts x 2 channel @ 2 ohm
  • Total power output: 1200 watts
  • LED Power/Protect/Clipping Light
  • Signal sensing remote turn-on
  • 4-way protection circuitry (short, thermal, DC, and high/low voltage protection)
  • Tiffany RCA terminal connectors
  • Features variable full crossover filters
  • Surface-mount component technology
  • Protective coating to prevent moisture corrosion on the PCB
  • Bonded components for extra vibration protection
  • Audio quality control verification using audio precision instruments
  • Built-in forced air cooling fan with 4-layer PCB
  • Boasts a vibrant red aesthetic and a slim, space-saving design
  • Available in Blue and Titanium (sold separately)
  • Low level input sensitivity: 0.4 - 6 volts
  • Frequency Response: 10 - 20000 Hz
  • Total Harmonic Distortion (THD): 0.5%
  • Signal to Noise Ratio: 90 dB
  • Variable high-pass filter: 10 - 2000 Hz
  • Variable low-pass filter: 10 - 2000 Hz
  • Variable Bass Boost: 0 - 12 dB
  • Fuse Rating: 140A (recommended)
  • 4 AWG gauge amplifier wiring kit is recommended for installation
  • Dimensions: 7.2" L x 5.5" W x 2.4" H
  • Authorized Internet Dealer
  • 2 Year Manufacturer's Warranty
  • MFR #: FRP-1.2K4/RD


This product is temporarily out of stock. May we recommend...

VADM4v2 small

NVX VADM4 v2 (VADM4v2)

• 80 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(41)

$209.99

List price $239.99

NDA6004 small

NVX NDA6004

• 100 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(14)

$159.99

List price $215.99

VAD10004v2 small

NVX VAD10004 v2 (VAD10004v2)

• 150 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(25)

$279.99

List price $335.99

RD400/4 small

JL Audio RD400/4

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(28)

$304.99

List price $379.99

MFA 4.220 small

Deaf Bonce MFA 4.220

• 220 watts x 4 channel @ 4 ohm
• 330 watts x 4 channel @ 2 ohm
• Bridged: 660 watts x 2 channel @ 4 ohm
• Total RMS Power: 1320 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$289.90

List price $289.90

JD400/4 small

JL Audio JD400/4

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(34)

$299.99

List price $299.99

MFA 4.180 small

Deaf Bonce MFA 4.180

• 180 watts x 4 channel @ 4 ohm
• 270 watts x 4 channel @ 2 ohm
• Bridged: 540 watts x 2 channel @ 4 ohm
• Total RMS Power: 1080 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$259.90

List price $259.90

MVPA4 small

NVX MVPA4

• 100 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(70)

$279.99

List price $383.99

MDX2000.4 2 Ohm small

PRV Audio MDX2000.4 2 Ohm

• 330 watts x 4 channel @ 4 ohm
• 500 watts x 4 channel @ 2 ohm
• Bridged: 1000 watts x 2 channel @ 4 ohm
• Total RMS Power: 2000 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$219.91

List price $274.89

AP200/4BT small

JL Audio AP200/4BT

• 40 watts x 4 channel @ 4 ohm
• 50 watts x 4 channel @ 2 ohm
• Bridged: 100 watts x 4 channel @ 4 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$549.99

List price $659.99

Specifications & Details


Key Features
Amplifier Key Features
Bass Boost
Compact Design
Fan Cooled
Power Specifications - Full Range Channels
RMS Power @ 4 ohms
120 watts x 4 channel
RMS Power @ 2 ohms
200 watts x 4 channel
RMS Power @ 1 ohm
300 watts x 4 channel
Bridged RMS Power
350 watts x 2 channel
Amplifier Specifications
Series
FRP Series
Amplifier Class
D
Number of Channels
4-Channel
Total RMS Power Output
1200 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
1 ohm
Minimum Impedance Bridged
2 ohms
Frequency Response
10 - 20000 Hz
THD at Rated RMS Power
0.5%
Speaker Level Inputs
No
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
10 - 2000 Hz
Low-Pass Crossover Frequency
10 - 2000 Hz
Signal-to-Noise Ratio
90 dB
Channel Separation
50 dB
Bass Boost
0 - 12 dB
Remote bass/level controller
No
Total Fuse Rating
140
Strappable
No
Amp Bluetooth Connectivity
No
Hi-Res Certified
No
Low-Level Input Sensitivity
0.4 - 6 volts
What is in the box?
Paperwork
User manual
WITB: Amplifiers
Amplifier
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

FRP-1.2K4/RD

Weight:

4.18lbs

Internal SKU:

frp12k4rd

Internal Product ID:

230017

Customer Ratings & Reviews


DS18 FRP-1.2K4/RD 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


12XL1000N-8 small

DS18 12XL1000N-8

1000W Peak (500W RMS) 12" XL Series Midrange 8-ohm Speakers

$359.95

List price $431.99

STEALTH XT 6-B small

Wet Sounds STEALTH XT 6-B

300W Peak 21.31" Stealth XT Series 6-Speaker Amplified Bluetooth Soundbar with Remote

(1)

$799.99

List price $799.99

VENISTTNCKCG1D10S-0S4 small

NVX BOOST Box Package with Alpine 10" Subwoofers

For select 2004-2018 Titan and Titan XD Crew and King Cab Trucks - Dual 10" BOOST Sealed Enclosure with Two W10S4 Subwoofers

(13)

$339.89

List price $439.99

JL-FD-LR-PRO-X6-TWX1/BK small

JL-FD-LR-PRO-X6-TWX1/BK

Jeep JL/JLU/JT Gladiator Front Door Panels with PRO-X Series Mid-Range Loudspeakers and Super Bullet Tweeters Aluminum (Black)

(1)

$339.80

List price $339.80

95-20-GM-TRUCK-J2SPKG small

JBL Stage2 624 Front Door Speaker Replacement Kit

Fits Select select 1995-2014 vehicles from GMC, Chevrolet, Hummer

(35)

$78.93

List price $135.93

CK 165L, SDSKS2, FRING65 small

Hertz CK 165L with Speaker Installation Kit

6.5" Cento Series 2-Way Component Speaker system

(94)

$399.99

List price $498.73

H735_SDSK2 small

Cerwin Vega H735 with Sound Damping

500W Peak (50W RMS) 3.5" HED Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

(82)

$74.98

List price $90.73

98-11-FOR-RAN-SDNA-73BT small

1998-2011 Ford Ranger Single DIN Bluetooth Front USB/AUX Car Stereo Upgrade

Includes In-Dash Car Stereo, Dash Kit and Harness

(98)

$189.93

List price $233.98

01-0277-01SL small

KVH TracVision A7 (01-0277-01SL)

Mobile DirecTV Satellite TV Dish, Antenna & Receiver for RV/Car/Truck/SUV - High Gloss Silver

$3299.00

List price $3995.00

Related Searches



Available Deal
FRP-1.2K4/RD main
Offer may end without notice

Eligible items

Shop items below for 30% off up to $100 discount on Save 30% off an NVX Amp Kit!

NVX XKIT44

$119.99

$83.99

$36 Savings!

Add to cart

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

2021 BMW X4

1995 Dodge Stealth

2015 BMW 535i

1997 Pontiac Sunfire

2003 GMC Yukon

2008 Lexus GS450h

2008 Kia Spectra

1994 Ford Ranger

2019 Ford Transit-350 HD

2006 Cadillac SRX

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.