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Discontinued U.S. acoustics Monoblock Amplifiers

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Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
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The lowest impedance the amplifier will handle when it is not bridged.

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** FREE SHIPPING WITHIN THE CONTINENTAL USA **
3000W Class D Amplifier • Wired bass remote control • platinum plated RCA inputs and connectors

** FREE SHIPPING WITHIN THE CONTINENTAL USA **
3000W Class D Amplifier • Wired bass remote control • platinum plated RCA inputs and connectors

USG3000D small

Item added to your cart.

Price: $349.99

Allstate logo

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

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7
Essential add-ons
NVX XLCA2X

2-Channel Line Out Converter

$159.99

$79.99

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NVX XLCA2

2 Channel Line Out Converter with xBOOST

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$49.99

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NVX XBBR2

Looking to fine tune the bass in your vehicle? Look no further

$149.99

$69.99

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The Epicenter - Black

Maximize Your Bass Potential with an Audio Control’s legendary Bass Restoration Processor

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X Series RCA Interconnect Cable

16.4 ft. of 2-Channel Interconnects with Super Quad Construction & Rhodium-Plated Connectors

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$18.99

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80 Amp Smart Relay Isolator (XSBI80)

Smart isolator - Monitors and auto-charging feature!

$49.99

$24.99

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80 Amp Relay Isolator (BIR80)

Great for isolating a second batter making it dedicated to the stereo system

$19.99

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200 Amp Smart Relay Isolator (XSBI200)

Smart isolator - Monitors and auto-charging feature!

$79.99

$54.99

Add to cart
500 Amp Smart Relay Isolator (XSBI500)

Smart isolator - Monitors and auto-charging feature!

$99.99

$74.99

Add to cart
500 Amp Relay Isolator (BIR500)

Does not create a voltage drop to the second battery like conventional isolators

$89.99

$65.99

Add to cart
Belva Nine Function Digital Multimeter

Perfect for any installation and troubleshooting

$29.99

$9.99

Add to cart
Six Function Digital Multimeter

Perfect for every toolbox

$14.99

$6.99

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Steve Meade Designs IM-SG

Impedance Meter / Signal Generator

$461.99

$451.99

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SMD DD-1 Distortion Detector

Set your gains like a Pro, accurately and quickly

$207.99

$199.99

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SMD CC-1 Crossover Calibrator

This is a must have! Set your crossover frequency like a Pro

$195.99

$192.99

Add to cart
High Quality Element Resistant AGU Fuse Holder

Belva BAGUH2 AGU Fuse Holder

$9.99

$4.99

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Modular Linkable ANL Fuse Block

Modular Linkable ANL Fuse Block

$59.99

$16.99

Add to cart
4 Pack of 80 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 80A Nickel Plated Fuses

$8.99

$3.99

Add to cart
4 Pack of 100 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 100A Nickel Plated Fuses

$8.99

$3.99

Add to cart
2 Pack of 100 Amp Nickel-Plated ANL Fuse

ANL 100A Nickel plated for better power transfer

$7.99

$3.99

Add to cart
2 Pack of 200 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 200 Amp ANL Fuses

$7.99

$3.99

Add to cart
2 Pack of 300 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 300 Amp ANL Fuses

$7.99

$3.99

Add to cart
XIX2025 Strapping RCA

0.25 Meter (0.86 ft) Hyper-Flex RCA cable w/ Serpentine-Cut Nickel Plated Connectors

$19.99

$12.99

Add to cart
Go to item page Right Arrow Icon of Right Arrow

** FREE SHIPPING WITHIN THE CONTINENTAL USA **
2000W Class D Amplifier • Wired bass remote control • platinum plated RCA inputs and connectors

** FREE SHIPPING WITHIN THE CONTINENTAL USA **
2000W Class D Amplifier • Wired bass remote control • platinum plated RCA inputs and connectors

USG2000D small

Item added to your cart.

Price: $279.99

Allstate logo

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

  • Mechanical, electrical and product failure covered! 100% parts and labor covered. (Coverage starts after Mfr. warranty)
  • Easy online management! Zero hassle claim service, available 24/7
Essential add-ons
NVX XLCA2X

2-Channel Line Out Converter

$159.99

$79.99

Add to cart
NVX XLCA2

2 Channel Line Out Converter with xBOOST

$62.49

$49.99

Add to cart
NVX XBBR2

Looking to fine tune the bass in your vehicle? Look no further

$149.99

$69.99

Add to cart
The Epicenter - Black

Maximize Your Bass Potential with an Audio Control’s legendary Bass Restoration Processor

$149.00

$149.00

Add to cart
NVX XIV25 V-Series 2-Channel RCA Cable

16.4 ft of V-Series 2-Channel RCA Audio Premium Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

$18.99

$12.99

Add to cart
80 Amp Smart Relay Isolator (XSBI80)

Smart isolator - Monitors and auto-charging feature!

$49.99

$24.99

Add to cart
80 Amp Relay Isolator (BIR80)

Great for isolating a second batter making it dedicated to the stereo system

$19.99

$14.99

Add to cart
200 Amp Smart Relay Isolator (XSBI200)

Smart isolator - Monitors and auto-charging feature!

$79.99

$54.99

Add to cart
500 Amp Smart Relay Isolator (XSBI500)

Smart isolator - Monitors and auto-charging feature!

$99.99

$74.99

Add to cart
500 Amp Relay Isolator (BIR500)

Does not create a voltage drop to the second battery like conventional isolators

$89.99

$65.99

Add to cart
Belva Nine Function Digital Multimeter

Perfect for any installation and troubleshooting

$29.99

$9.99

Add to cart
Six Function Digital Multimeter

Perfect for every toolbox

$14.99

$6.99

Add to cart
Steve Meade Designs IM-SG

Impedance Meter / Signal Generator

$461.99

$451.99

Add to cart
SMD DD-1 Distortion Detector

Set your gains like a Pro, accurately and quickly

$207.99

$199.99

Add to cart
SMD CC-1 Crossover Calibrator

This is a must have! Set your crossover frequency like a Pro

$195.99

$192.99

Add to cart
High Quality Element Resistant AGU Fuse Holder

Belva BAGUH2 AGU Fuse Holder

$9.99

$4.99

Add to cart
Modular Linkable ANL Fuse Block

Modular Linkable ANL Fuse Block

$59.99

$16.99

Add to cart
4 Pack of 80 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 80A Nickel Plated Fuses

$8.99

$3.99

Add to cart
4 Pack of 100 Amp Nickel-Plated MANL Fuse

Mini-ANL (MANL/AFS) 100A Nickel Plated Fuses

$8.99

$3.99

Add to cart
2 Pack of 100 Amp Nickel-Plated ANL Fuse

ANL 100A Nickel plated for better power transfer

$7.99

$3.99

Add to cart
2 Pack of 200 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 200 Amp ANL Fuses

$7.99

$3.99

Add to cart
2 Pack of 300 Amp Nickel-Plated ANL Fuse

Two fuses per order. High quality 300 Amp ANL Fuses

$7.99

$3.99

Add to cart
XIX2025 Strapping RCA

0.25 Meter (0.86 ft) Hyper-Flex RCA cable w/ Serpentine-Cut Nickel Plated Connectors

$19.99

$12.99

Add to cart
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