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2018 Audi A4 Quattro

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

Universal-Fit Audio for 2018 Audi A4 Quattro

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

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NVX ESW124 + VADM1 + XKIT82

500W Peak (250W RMS) E-Series 12" Car Subwoofer + Monoblock Car/Marine/Powersports Amplifier with Bass Remote with 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 800 Watts

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500W Peak (250W RMS) E-Series 12" Car Subwoofer + Monoblock Car/Marine/Powersports Amplifier with Bass Remote with 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 800 Watts

• Two 12" ESW124 E-Series 250W RMS Subwoofers
• 1200W Peak (600W RMS) Class D VADM1v2 Monoblock Amplifier
• XKIT82 Complete 8 AWG Amplifier Wiring Kit
• 1-year Warranty from the Original Purchase Date

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77
List price $503.96
-19% $409.96

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List price $503.96
-19% $409.96
$368.96 with coupon | Price details
2026-07-12 23:59:00
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2026-07-30 12:30:00

• Two 12" ESW124 E-Series 250W RMS Subwoofers
• 1200W Peak (600W RMS) Class D VADM1v2 Monoblock Amplifier
• XKIT82 Complete 8 AWG Amplifier Wiring Kit
• 1-year Warranty from the Original Purchase Date

NVX XCW152 + XCA3K + XKIT02 + XAPKO

4000 Watt Peak (2000W RMS) 15" X-Series Dual 2-Ohm SPL Subwoofer + Monoblock Amplifier with LED Remote Bass Knob with 2-Ch Amplifier Wiring Kit w/ RCA with Amp Power Wiring Kit

XCW152_XCA3K_XKIT02_XAPKO big
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4000 Watt Peak (2000W RMS) 15" X-Series Dual 2-Ohm SPL Subwoofer + Monoblock Amplifier with LED Remote Bass Knob with 2-Ch Amplifier Wiring Kit w/ RCA with Amp Power Wiring Kit

• One 15" XCW152 XC-Series 2000W RMS Subwoofer
• 6000W Peak (3000W RMS) Class D XCA3K Monoblock Korean Amplifier
• XKIT02 Complete 0 AWG Amplifier Wiring Kit
• XAPK0 0 AWG Power Only Wiring Kit
• 1-year Warranty from the Original Purchase Date

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99
List price $2195.96
-25% $1,649.96

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2026-07-30 12:30:00

• One 15" XCW152 XC-Series 2000W RMS Subwoofer
• 6000W Peak (3000W RMS) Class D XCA3K Monoblock Korean Amplifier
• XKIT02 Complete 0 AWG Amplifier Wiring Kit
• XAPK0 0 AWG Power Only Wiring Kit
• 1-year Warranty from the Original Purchase Date

Lowest price in 30 days

Sundown Audio SW-SACL15D2 + NVX XCA3K

2 pairs of 750W RMS 15" SA Classic Series Dual 2-ohm Subwoofer with Monoblock Amplifier with LED Remote Bass Knob

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2 pairs of 750W RMS 15" SA Classic Series Dual 2-ohm Subwoofer with Monoblock Amplifier with LED Remote Bass Knob

• RMS Power: 750 watts
• Impedance: Dual 2 ohm
• Competition Grade Paper Cone
• Mount depth: 7.69"
• Sensitivity: 89.2 dB

• Includes 2 pairs of Subwoofer with amplifier

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-33% $1,859.95

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• RMS Power: 750 watts
• Impedance: Dual 2 ohm
• Competition Grade Paper Cone
• Mount depth: 7.69"
• Sensitivity: 89.2 dB

• Includes 2 pairs of Subwoofer with amplifier

Kicker TRTP102 Subwoofer + NVX VADM1 v2 Amp w/ Free Amp Install Kit

800W Peak Loaded Dual 10" Sealed Truck Enclosure with 600W RMS Class D Monoblock Amplifier, 8 Gauge OFC Wiring Kit, and NVX Can Koozies

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800W Peak Loaded Dual 10" Sealed Truck Enclosure with 600W RMS Class D Monoblock Amplifier, 8 Gauge OFC Wiring Kit, and NVX Can Koozies

  • Kicker TRTP102 800W Peak Loaded Dual 10-Inch Sealed Truck Enclosure
  • NVX VADM1 v2 600W RMS Class D Monoblock Amplifier with Bass Remote
  • Full Spec 8 Gauge 100% OFC Complete 2-Channel Wiring Kit with RCA
  • Premium Polyurethane Foam Can Insulator Sleeve Koozie in Black
  • High-performance bundle includes Subwoofer, Amp, and Installation Hardware
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81
List price $695.95
-27% $510.01

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  • Kicker TRTP102 800W Peak Loaded Dual 10-Inch Sealed Truck Enclosure
  • NVX VADM1 v2 600W RMS Class D Monoblock Amplifier with Bass Remote
  • Full Spec 8 Gauge 100% OFC Complete 2-Channel Wiring Kit with RCA
  • Premium Polyurethane Foam Can Insulator Sleeve Koozie in Black
  • High-performance bundle includes Subwoofer, Amp, and Installation Hardware

Sundown Audio UV.2 15" D4 + NVX XCA3K

1 pair of 1750W RMS 15" U Series Dual 4-ohm Car Subwoofer with Monoblock Amplifier with LED Remote Bass Knob

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1 pair of 1750W RMS 15" U Series Dual 4-ohm Car Subwoofer with Monoblock Amplifier with LED Remote Bass Knob

• RMS Power: 1750 watts
• Impedance: Dual 4 ohm
• Mount depth: 9"
• Sensitivity: 87.32 dB

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-20% $2,139.97

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• RMS Power: 1750 watts
• Impedance: Dual 4 ohm
• Mount depth: 9"
• Sensitivity: 87.32 dB

Kicker 49L7TDF82 + NVX VADM1 v2 w/ Free Amp Install Kit

700W Peak Loaded Single 8 inch Sealed Subwoofer Enclosure with 600W RMS Class D Monoblock Amplifier, 8 Gauge OFC Wiring Kit, and Koozie + Bundle

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700W Peak Loaded Single 8 inch Sealed Subwoofer Enclosure with 600W RMS Class D Monoblock Amplifier, 8 Gauge OFC Wiring Kit, and Koozie + Bundle

  • Kicker 700W Peak Loaded Single 8-Inch Sealed Subwoofer Enclosure
  • 600W RMS Class D Monoblock Car and Marine Amplifier with Bass Remote
  • Full Spec 8 Gauge 100-Percent OFC 2-Channel Wiring Kit with RCA
  • Premium Polyurethane Foam Can Insulator Sleeve Koozie
  • Complete audio upgrade package includes amplifier and wiring kit
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80
List price $675.95
-28% $490.01

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  • Kicker 700W Peak Loaded Single 8-Inch Sealed Subwoofer Enclosure
  • 600W RMS Class D Monoblock Car and Marine Amplifier with Bass Remote
  • Full Spec 8 Gauge 100-Percent OFC 2-Channel Wiring Kit with RCA
  • Premium Polyurethane Foam Can Insulator Sleeve Koozie
  • Complete audio upgrade package includes amplifier and wiring kit

Kicker CDF124 Subwoofer + CXA400.1 Amp + Remote w/ Free Amp Install Kit

300W Peak Loaded Single 12" Downward Firing Sub Enclosure with 400W RMS Monoblock Amplifier, 8 Gauge Wiring Kit, Wired Bass Remote + Accessories

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300W Peak Loaded Single 12" Downward Firing Sub Enclosure with 400W RMS Monoblock Amplifier, 8 Gauge Wiring Kit, Wired Bass Remote + Accessories

  • Kicker 48CDF124 Loaded Single 12-Inch 300W Peak Downward Firing Sealed Subwoofer Enclosure
  • 46CXA4001T 400W RMS Class D CX-Series Monoblock Car Amplifier
  • 46CXARCT Wired Bass Remote Controller for CX Series Amplifiers
  • Belva BAK82 8 Gauge Copper Clad Aluminum 2-Channel Amplifier Wiring Kit with RCA
  • NVX Premium Polyurethane Foam Can Insulator Sleeve Koozie
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124
List price $539.94
-19% $440.00

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  • Kicker 48CDF124 Loaded Single 12-Inch 300W Peak Downward Firing Sealed Subwoofer Enclosure
  • 46CXA4001T 400W RMS Class D CX-Series Monoblock Car Amplifier
  • 46CXARCT Wired Bass Remote Controller for CX Series Amplifiers
  • Belva BAK82 8 Gauge Copper Clad Aluminum 2-Channel Amplifier Wiring Kit with RCA
  • NVX Premium Polyurethane Foam Can Insulator Sleeve Koozie
Lowest price in 30 days

Kicker TCWRT82 Subwoofer + CXA400.1 Amp + Bass Remote w/ Free Amp Install Kit

600W Peak Loaded Single 8" Sealed Truck Enclosure with 400W RMS Class D Monoblock Amp, 8 Gauge Wiring Kit, Bass Remote and NVX Koozie

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600W Peak Loaded Single 8" Sealed Truck Enclosure with 400W RMS Class D Monoblock Amp, 8 Gauge Wiring Kit, Bass Remote and NVX Koozie

  • Kicker 600W Peak Loaded Single 8-Inch Sealed Truck Enclosure with Passive Radiator
  • 400W RMS Class D CX-Series Monoblock Car Amplifier
  • Wired Bass Remote Controller for CX Series Amplifiers
  • 8 Gauge Premium CCA Complete 2-Channel Amplifier Wiring Kit with RCA
  • Premium Polyurethane Foam Can Insulator Sleeve Koozies
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126
List price $599.94
-27% $439.97

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  • Kicker 600W Peak Loaded Single 8-Inch Sealed Truck Enclosure with Passive Radiator
  • 400W RMS Class D CX-Series Monoblock Car Amplifier
  • Wired Bass Remote Controller for CX Series Amplifiers
  • 8 Gauge Premium CCA Complete 2-Channel Amplifier Wiring Kit with RCA
  • Premium Polyurethane Foam Can Insulator Sleeve Koozies
Limited time!

Belva BMSS10RW with VADM2

10" Shallow Marine Subwoofer With Multicolor RGB Lights + Class D 2-Channel Marine Amplifier

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10" Shallow Marine Subwoofer With Multicolor RGB Lights + Class D 2-Channel Marine Amplifier

• Two 10" Dual 4-ohm Subwoofers
• RGB Lights with Remote
• Waterproof Polypropolene Cone
• Marine Certified 2-Channel Micro Class D Amplifier
• 3-Way System Protection
• Extremely Small Footprint

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17
List price $439.97
-29% $310.22

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• Two 10" Dual 4-ohm Subwoofers
• RGB Lights with Remote
• Waterproof Polypropolene Cone
• Marine Certified 2-Channel Micro Class D Amplifier
• 3-Way System Protection
• Extremely Small Footprint

NVX VSW104v3 Subwoofer, Belva BXA15001 Amplifier and XKIT82 Amp Kit

1200W Peak (600 RMS) 10" VS-Series Car Subwoofer with 1500W Peak BX-Series Monoblock Amplifier and 8 Gauge OFC Wiring Kit + Accessories

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1200W Peak (600 RMS) 10" VS-Series Car Subwoofer with 1500W Peak BX-Series Monoblock Amplifier and 8 Gauge OFC Wiring Kit + Accessories

  • NVX VSW104v3 1200W Peak 10-Inch VS-Series Dual 4-Ohm Car Subwoofer
  • Belva BXA15001 1500W Peak BX-Series Class-AB Monoblock Amplifier
  • Wired Remote Bass Level Control for convenient adjustments
  • XKIT82 Full Spec 8 Gauge 100% OFC 2-Channel Wiring Kit
  • Complete Setup includes RCA Cables for Amplifiers up to 800 Watts
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105
List price $389.93
-31% $269.97

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List price $389.93
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2026-07-30 12:30:00

  • NVX VSW104v3 1200W Peak 10-Inch VS-Series Dual 4-Ohm Car Subwoofer
  • Belva BXA15001 1500W Peak BX-Series Class-AB Monoblock Amplifier
  • Wired Remote Bass Level Control for convenient adjustments
  • XKIT82 Full Spec 8 Gauge 100% OFC 2-Channel Wiring Kit
  • Complete Setup includes RCA Cables for Amplifiers up to 800 Watts
Lowest price in 30 days

Kicker TCWRT672 Subwoofer + CXA400.1 Amp + Remote w/ Free Amp Install Kit

300W Peak (150W RMS) Loaded Single 6.75" Sealed Truck Enclosure and 400W RMS Class D CX-Series Monoblock Amplifier + Accessories

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300W Peak (150W RMS) Loaded Single 6.75" Sealed Truck Enclosure and 400W RMS Class D CX-Series Monoblock Amplifier + Accessories

  • Kicker 300W Peak Loaded Single 6.75-Inch Sealed Truck Enclosure with Passive Radiator
  • 400W RMS Class D CX-Series Monoblock Car Amplifier
  • Wired Bass Remote Controller for CX Series Amplifiers
  • Belva 8 Gauge Premium CCA Complete 2-Channel Amplifier Wiring Kit with RCA
  • NVX Premium Polyurethane Foam Can Insulator Sleeve Koozie
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125
List price $529.94
-26% $391.95

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  • Kicker 300W Peak Loaded Single 6.75-Inch Sealed Truck Enclosure with Passive Radiator
  • 400W RMS Class D CX-Series Monoblock Car Amplifier
  • Wired Bass Remote Controller for CX Series Amplifiers
  • Belva 8 Gauge Premium CCA Complete 2-Channel Amplifier Wiring Kit with RCA
  • NVX Premium Polyurethane Foam Can Insulator Sleeve Koozie

NVX NSW122v3 Version 3 Sub, XKIT82 Amp kit + Belva BXA15001 Amp

700W Peak (350W RMS) 12" N Series Dual 2-ohm Subwoofer with 1500W Peak BX-Series Monoblock Car Amplifier, Bass Remote, and 8 Gauge OFC Wiring Kit

NSW122V2_BXA15001_XKIT82 big
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700W Peak (350W RMS) 12" N Series Dual 2-ohm Subwoofer with 1500W Peak BX-Series Monoblock Car Amplifier, Bass Remote, and 8 Gauge OFC Wiring Kit

  • NVX NSW122 Version 2 700W Peak 12 Inch N Series Dual 2-Ohm Car Subwoofer
  • 1500W Peak BX-Series Class-AB Monoblock Car Amplifier
  • Wired Remote Bass Level Control included for precision tuning
  • Full Spec 8 Gauge 100% Oxygen Free Copper Wiring Kit with RCA
  • Complete installation package for amplifiers up to 800 Watts
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107
List price $365.93
-32% $249.97

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2026-07-30 12:30:00

  • NVX NSW122 Version 2 700W Peak 12 Inch N Series Dual 2-Ohm Car Subwoofer
  • 1500W Peak BX-Series Class-AB Monoblock Car Amplifier
  • Wired Remote Bass Level Control included for precision tuning
  • Full Spec 8 Gauge 100% Oxygen Free Copper Wiring Kit with RCA
  • Complete installation package for amplifiers up to 800 Watts

Diamond Audio DMD500.1D with DMD122 Sub

500W RMS DMD Series Monoblock Class-D Amplifier + Pair (2) DMD Series 12 inch 2Ω DVC Subwoofer

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500W RMS DMD Series Monoblock Class-D Amplifier + Pair (2) DMD Series 12 inch 2Ω DVC Subwoofer

• 340 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes 12 inch Subwoofer

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List price $639.97
-16% $539.99

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• 340 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes 12 inch Subwoofer

NVX XCW152 + XQA25001 + XKIT02

4000 Watt Peak (2000W RMS) 15" X-Series Dual 2-Ohm SPL Subwoofer + Stable Monoblock Amplifier with X-Boost and Amplifier Wiring Kit with RCA

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4000 Watt Peak (2000W RMS) 15" X-Series Dual 2-Ohm SPL Subwoofer + Stable Monoblock Amplifier with X-Boost and Amplifier Wiring Kit with RCA

• One 15" XCW152 XC-Series 2000W RMS Subwoofer
• 5000W Peak (2500W RMS) Class D XQA25001 Monoblock Amplifier
• XKIT02 Complete 0 AWG Amplifier Wiring Kit
• 1-year Warranty from the Original Purchase Date

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43
List price $1727.97
-32% $1,179.97

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2026-07-30 12:30:00

• One 15" XCW152 XC-Series 2000W RMS Subwoofer
• 5000W Peak (2500W RMS) Class D XQA25001 Monoblock Amplifier
• XKIT02 Complete 0 AWG Amplifier Wiring Kit
• 1-year Warranty from the Original Purchase Date

2018–Present JL Wrangler/2020–Present JT Gladiator–Kicker Dual Plug & Play

1100W Peak (900W RMS) Class D LX Series 4-Channel Full Range Car Amplifier (with Control Center)

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1100W Peak (900W RMS) Class D LX Series 4-Channel Full Range Car Amplifier (with Control Center)

• 125 watts x 4 channel @ 4 ohm
• 225 watts x 4 channel @ 2 ohm
• Bridged: 450 watts x 2 channel @ 4 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable 4-Channel Amplifier

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-10% $1,899.97

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• 125 watts x 4 channel @ 4 ohm
• 225 watts x 4 channel @ 2 ohm
• Bridged: 450 watts x 2 channel @ 4 ohm
• Total RMS Power: 900 watts
• Class D 2 ohm Stable 4-Channel Amplifier

Lowest price in 30 days

Kicker 50VCWC124 Subwoofer + NVX VADM1 v2 Amplifier w/ Free Amp Install Kit

600W Peak Loaded Single 12" Vented Subwoofer Enclosure with 600W RMS Class D Monoblock Amplifier, 8 Gauge OFC Wiring Kit, and NVX Koozie Accessories

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600W Peak Loaded Single 12" Vented Subwoofer Enclosure with 600W RMS Class D Monoblock Amplifier, 8 Gauge OFC Wiring Kit, and NVX Koozie Accessories

  • Kicker 600W Peak (300W RMS) Loaded Single 12" Hatchback Vented Enclosure
  • NVX 600W RMS Class D Monoblock Amplifier with Bass Remote
  • Full Spec 8 Gauge 100% OFC 2-Channel Wiring Kit
  • High-Quality RCA for Amplifiers up to 800 Watts
  • Premium Polyurethane Foam Can Insulator Sleeve
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78
List price $645.95
-37% $405.98

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  • Kicker 600W Peak (300W RMS) Loaded Single 12" Hatchback Vented Enclosure
  • NVX 600W RMS Class D Monoblock Amplifier with Bass Remote
  • Full Spec 8 Gauge 100% OFC 2-Channel Wiring Kit
  • High-Quality RCA for Amplifiers up to 800 Watts
  • Premium Polyurethane Foam Can Insulator Sleeve

NVX NSW124v3 + NDA12001 + XKIT42

1000W Peak (500W RMS) N-Series v3 12" Subwoofer + Monoblock Amplifier with Remote Bass Knob with 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 1500 Watts

NSW124V3_NDA12001_XKIT42 big
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1000W Peak (500W RMS) N-Series v3 12" Subwoofer + Monoblock Amplifier with Remote Bass Knob with 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 1500 Watts

• Two 12" NSW124v3 N-Series 500W RMS Subwoofers
• 2400W Peak (1200W RMS) Class D NDA12001 Monoblock Amplifier
• XKIT42 Complete 4 AWG Amplifier Wiring Kit
• 1-year Warranty from the Original Purchase Date

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171
List price $623.96
-23% $479.96

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2026-07-30 12:30:00

• Two 12" NSW124v3 N-Series 500W RMS Subwoofers
• 2400W Peak (1200W RMS) Class D NDA12001 Monoblock Amplifier
• XKIT42 Complete 4 AWG Amplifier Wiring Kit
• 1-year Warranty from the Original Purchase Date

(2) MTX 3510-04S 10" Shallow Subwoofers + Kicker Amplifier + Free Amp kit

600W Max (300W RMS) 10" 35 Series 4 ohm Shallow Mount Car Subwoofer Package

(2) 3510-04S,BAK42BK,46CXA8001T big
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600W Max (300W RMS) 10" 35 Series 4 ohm Shallow Mount Car Subwoofer Package

• 600W Max
• 300W RMS
• Slim Profile for Mounting In Tight Spaces
• Inverted Apex Surround
• Horizontal Spring-Loaded Terminals
• Sensitivity: 83.7dB

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82
List price $669.88
-7% $624.38

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• 600W Max
• 300W RMS
• Slim Profile for Mounting In Tight Spaces
• Inverted Apex Surround
• Horizontal Spring-Loaded Terminals
• Sensitivity: 83.7dB

NVX NSW104v3 + NDA12001 + XKIT42

1000W Peak (500W RMS) N-Series v3 10" Car Subwoofer + Monoblock Amplifier with Remote Bass Knob with 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 1500 Watts

NSW104V3_NDA12001_XKIT42 big
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1000W Peak (500W RMS) N-Series v3 10" Car Subwoofer + Monoblock Amplifier with Remote Bass Knob with 2-Channel Amplifier Wiring Kit with RCA for Amplifiers up to 1500 Watts

• Two 10" NSW104v3 N-Series 500W RMS Subwoofers
• 2400W Peak (1200W RMS) Class D NDA12001 Monoblock Amplifier
• XKIT42 Complete 4 AWG Amplifier Wiring Kit
• 1-year Warranty from the Original Purchase Date

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181
List price $599.96
-23% $459.96

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List price $599.96
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2026-07-30 12:30:00

• Two 10" NSW104v3 N-Series 500W RMS Subwoofers
• 2400W Peak (1200W RMS) Class D NDA12001 Monoblock Amplifier
• XKIT42 Complete 4 AWG Amplifier Wiring Kit
• 1-year Warranty from the Original Purchase Date

Diamond Audio DMD500.1D with DMD124 Sub

500W RMS DMD Series Monoblock Class-D Amplifier + DMD Series 12 inch 4Ω DVC Sub

DMD5001D_DMD124 big
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500W RMS DMD Series Monoblock Class-D Amplifier + DMD Series 12 inch 4Ω DVC Sub

• 340 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes 12 inch Subwoofer

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List price $469.98
-17% $389.99

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• 340 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes 12 inch Subwoofer

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