Semi Truck 4-Channel Amplifiers
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DS18®SELECT Series Full Range Class AB 4-Channel 1800W 2 Ohm AmplifierSELECT Series Full Range Class AB 4-Channel 1800W 2 Ohm Amplifier by DS18®. DS18's Select series of amplifiers bring elegance and great power for a very nice price point. These amps come in brushed aluminum red or silver to really catch...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$199.95 - DS18®SELECT Series Full Range Class D 4-Channel 1500W 2 Ohm AmplifierSELECT Series Full Range Class D 4-Channel 1500W 2 Ohm Amplifier by DS18®. DS18's Select series of amplifiers bring elegance and great power for a very nice price point. These amps come in brushed aluminum red or silver to really catch...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$189.95
- DS18®SELECT Series Full Range Class D 4-Channel 3000W 2 Ohm AmplifierSELECT Series Full Range Class D 4-Channel 3000W 2 Ohm Amplifier by DS18®. DS18's Select series of amplifiers bring elegance and great power for a very nice price point. These amps come in brushed aluminum red or silver to really catch...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$244.95
- American Bass®VFL Series 1000W 4-Channel Class D Amplifier (VFLHYBRID2504)VFL Series 1000W 4-Channel Class D Amplifier by American Bass®. Whether you're building your own hardcore audio system or just doing sound performance make-over, the top-end American Bass amp is a must have. Experience 'excellence' in...Perfect blend of leading innovations and superior workmanshipManufactured to offer high value and everlasting reliability$195.60
- Audiopipe®APMN Series 2000W 4-Channel Class D Mini Amplifier (APMN-4100D)APMN Series 2000W 4-Channel Class D Mini Amplifier by Audiopipe®. Boasting the latest in technology, this 1st-rate amplifier from Audiopipe is the finest piece of competition car audio gear that will take your listening experience to a...Made to offer exceptional sound qualityClear sound at high frequencies$170.99
- Autotek®AYA Series 2100W 4-Channel Class AB Amplifier (AYA-2100.4)AYA Series 2100W 4-Channel Class AB Amplifier by Autotek®. Autotek Alloy with QTD Technology delivers 2100 watts and includes built-in electronic crossovers. This top-grade product is expertly made in compliance with stringent industry...Low Noise Preamplifier Circuit - Maximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification processRCA Inputs - Highest sound quality connection with quality RCA materials helps prevent interference and minimize distortion in the signal path$115.91
- Autotek®Mean Machine Series 2000W 4-Channel Class AB Amplifier (MM2020.4)Mean Machine Series 2000W 4-Channel Class AB Amplifier by Autotek®. Autotek MEAN MACHINE series of car audio amplifiers bring extreme power with PRO-FI™ High Speed MOSFETS and high sound quality with minimum distortion levels. This...Low Noise Pre-Amplifier Circuitry - Maximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification processRCA inputs and outputs provide the highest sound quality connection$90.23
- Autotek®TA Series 1000W 4-Channel Class AB Mini Amplifier (TA1050.4)TA Series 1000W 4-Channel Class AB Mini Amplifier by Autotek®. Autotek TA Series delivers huge power in an efficient heatsink. Features include built-in electronic crossovers and high-level inputs. 1000W four channel car audio amplifier.Pre-AMP Circuitry Low Noise PreamplifierMaximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification process$74.77
- Crunch®Ground Pounder 1500W 4-Channel Class AB Amplifier (GP-1500.4)Ground Pounder 1500W 4-Channel Class AB Amplifier by Crunch®. Crunch Ground Pounder with QTD Technology delivers 1500 watts to subwoofers and includes built-in electronic crossovers. This top-grade product is expertly made in compliance...Low Noise Preamplifier Circuit - Maximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification processRCA Inputs - Highest sound quality connection with quality RCA materials helps prevent interference and minimize distortion in the signal path$139.99
- Crunch®Ground Pounder 2000W 4-Channel Class AB Amplifier (GP-2000.4)Ground Pounder 2000W 4-Channel Class AB Amplifier by Crunch®. Crunch Ground Pounder with QTD Technology delivers 1500 watts to subwoofers and includes built-in electronic crossovers. This top-grade product is expertly made in compliance...Low Noise Preamplifier Circuit - Maximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification processRCA Inputs - Highest sound quality connection with quality RCA materials helps prevent interference and minimize distortion in the signal path$159.99
- Crunch®PowerZone Series 1000W 4-Channel Class AB Mini Amplifier (PZ-1020.4)PowerZone Series 1000W 4-Channel Class AB Mini Amplifier by Crunch®. PowerZone four channel amplifier highlighted with bright Crunch red heatsink elements feature high level inputs utilizing SPEED-FET output devices and QTD Technology...High level inputs easily tie into OEM audio systems that do not offer RCA output (Molex connector is included)Variable electronic crossovers allow for complete control of the sound$129.99
- Crunch®PowerZone Series 2000W 4-Channel Class AB Amplifier (PZ-2020.4)PowerZone Series 2000W 4-Channel Class AB Amplifier by Crunch®. PowerZone four channel amplifier highlighted with bright Crunch red heatsink elements feature high level inputs utilizing SPEED-FET output devices and QTD Technology...High level inputs easily tie into OEM audio systems that do not offer RCA output (Molex connector is included)Variable electronic crossovers allow for complete control of the sound$179.99
- Crunch®Smash Series 1100W 4-Channel Class AB Amplifier (SA-1100.4)Smash Series 1100W 4-Channel Class AB Amplifier by Crunch®. Crunch Smash with QTD Technology delivers 1100 watts and includes built-in electronic crossovers. This top-grade product is expertly made in compliance with stringent industry...Low Noise Preamplifier Circuit - Maximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification processRCA Inputs - Highest sound quality connection with quality RCA materials helps prevent interference and minimize distortion in the signal path$185.63
- Crunch®Smash Series 2100W 4-Channel Class AB Amplifier (SA-2100.4)Smash Series 2100W 4-Channel Class AB Amplifier by Crunch®. Crunch Smash with QTD Technology delivers 2100 watts and includes built-in electronic crossovers. This top-grade product is expertly made in compliance with stringent industry...Low Noise Preamplifier Circuit - Maximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification processRCA Inputs - Highest sound quality connection with quality RCA materials helps prevent interference and minimize distortion in the signal path$90.62
- DS18®SELECT Series 1200W 4-Channel Class AB Amplifier (S-1200.4/RD)SELECT Series 1200W 4-Channel Class AB Amplifier (S-1200.4/RD) by DS18®. These amps come in brushed aluminum red or silver to really catch the eye from afar. These amps were designed to bring you maximum output per dollar so you can...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$134.95
- DS18®SELECT Series 1200W 4-Channel Class AB Amplifier (S-1200.4/SL)SELECT Series 1200W 4-Channel Class AB Amplifier (S-1200.4/SL) by DS18®. These amps come in brushed aluminum red or silver to really catch the eye from afar. These amps were designed to bring you maximum output per dollar so you can...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$134.95
- DS18®SELECT Series 1500W 4-Channel Class D Amplifier (S-1500.4D/SL)SELECT Series 1500W 4-Channel Class D Amplifier (S-1500.4D/SL) by DS18®. These amps come in brushed aluminum red or silver to really catch the eye from afar. These amps were designed to bring you maximum output per dollar so you can...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$189.95
- DS18®SELECT Series 1500W 4-Channel Class D Amplifier (S-1500.4D/RD)SELECT Series 1500W 4-Channel Class D Amplifier (S-1500.4D/RD) by DS18®. These amps come in brushed aluminum red or silver to really catch the eye from afar. These amps were designed to bring you maximum output per dollar so you can...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$189.95
- DS18®SELECT Series 1800W 4-Channel Class AB Amplifier (S-1800.4/SL)SELECT Series 1800W 4-Channel Class AB Amplifier (S-1800.4/SL) by DS18®. These amps come in brushed aluminum red or silver to really catch the eye from afar. These amps were designed to bring you maximum output per dollar so you can...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$199.95
- DS18®SELECT Series 1800W 4-Channel Class AB Amplifier (S-1800.4/RD)SELECT Series 1800W 4-Channel Class AB Amplifier (S-1800.4/RD) by DS18®. These amps come in brushed aluminum red or silver to really catch the eye from afar. These amps were designed to bring you maximum output per dollar so you can...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$199.95
- DS18®SELECT Series Full Range Class D 4-Channel 3000W 2 Ohm Red Amplifier (S-3000.4D/RD)SELECT Series Full Range Class D 4-Channel 3000W 2 Ohm Red Amplifier (S-3000.4D/RD) by DS18®. DS18's Select series of amplifiers bring elegance and great power for a very nice price point. These amps come in brushed aluminum red or...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$244.95
- DS18®SELECT Series Full Range Class D 4-Channel 3000W 2 Ohm Silver Amplifier (S-3000.4D/SL)SELECT Series Full Range Class D 4-Channel 3000W 2 Ohm Silver Amplifier (S-3000.4D/SL) by DS18®. DS18's Select series of amplifiers bring elegance and great power for a very nice price point. These amps come in brushed aluminum red or...High in power, efficient in performance, reliable in serviceUser-friendly design, ergonomic handle, solid construction$244.95
- KICKER®CX Series 360W 4-Channel Class AB Amplifier (46CXA3604t)CX Series 360W 4-Channel Class AB Amplifier by KICKER®. This Four-Channel Amplifier is built to power all your door speakers in a single, powerful package. Using Class A/B power, this amp features a variable bass boost with KickEQ,...Class A/B full-range channelsThree-second turn-on/off delay to eliminate unwanted interference$229.99
- KICKER®PX-Series 300W 4-Channel Amplifier (42PXA3004)PX-Series 300W 4-Channel Amplifier by KICKER®. PX Amplifiers are specially designed to deliver tremendous power in a tiny, weatherproof footprint - without taxing your charging system. The PXA300.4 Four-Channel Amplifier is built to...High-quality audio performanceProvides you with an array of options so you can find the perfect fit for the sound you are looking for$229.95
- KICKER®Smash Series 180W 4-Channel Amplifier (45KEY1804)Smash Series 180W 4-Channel Amplifier by KICKER®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured from...Auto EQ Microphone With Selector Switch IncludedCompatible with Start/Stop Vehicle Technology$199.95
- KICKER®Smash Series 200W 4-Channel Amplifier (47KEY2004)Smash Series 200W 4-Channel Amplifier by KICKER®. The biggest advance - in the smallest package. Introducing the KEY smart amplifier and audio processor in one, featuring AI-driven DSP. ACOUSTIC CORRECTION = AUDIO PERFECTION. Don't just...200W Of Power (50x4)Auto EQ Microphone With Selector Switch Included$269.99
- Lanzar®Heritage Series 2000W 4-Channel Class AB Amplifier (HTG447)Heritage Series 2000W 4-Channel Class AB Amplifier by Lanzar®. Benefit from high-end sound amplifying power delivered by this top-of-the-line Lanzar amp. Designed for sound quality and performance reinforcement, this high-performance...Electronic Crossover NetworkBass Boost Circuit$117.99
- Planet Audio®Anarchy Series 2400W 4-Channel Class AB Amplifier (AC24004)Anarchy Series 2400W 4-Channel Class AB Amplifier by Planet Audio®. Boost that bass with this high-end amplifier from Planet Audio. Combining cutting-edge technology with a sleek design, this extremely powerful amp is a perfect tune-up...Full Range Class A/B, MOSFET Power SupplyHigh and Low Level Inputs$213.24
- Power Acoustik®Vertigo Series 2200W 4-Channel Class AB Amplifier (VA4-2200D)Vertigo Series 2200W 4-Channel Class AB Amplifier by Power Acoustik®. Vertigo amplifiers are the next step in performance and value. Taking advantage of tried and true class A/B full range and improved efficiency class D monoblock...2 Ohm Stereo & 4 Ohm Bridged Class A/B Full RangeMOSFET Power Supply with Audiophile Grade IRTM Transistors$78.19
- Precision Power®Black Ice Series 1000W 4-Channel Class AB Amplifier (ICE1000.4)Black Ice Series 1000W 4-Channel Class AB Amplifier by Precision Power®. Precision Power is proud to present the boldest generation of amplifiers, Black Ice. Over compensated high headroom power supplies are capable of producing more...2- Ohm Stereo, 4- Ohm Bridged Full Range OperationDirect Short, Thermal, & Overload Circuits Protect Ampllifier$130.70
Get that extra power to upgrade your vehicle’s sound system to enjoy a crisp, crystal-clear sound at all sound levels by investing in an external amp. Whether you’re dissatisfied with muddy sound coming from your semi truck’s factory stereo and speakers or need an amp to drive your new aftermarket speakers, a 4-channel amplifier is a perfect option to go. A good amplifier will not only make your music louder but also make it sound way better, bringing all the depth and detail. On our digital shelves, we’ve handpicked amplifiers from the most trusted and reputable brand names in the industry.
Designed with sound quality, performance, and versatility in mind, 4-channel amplifiers are a sure way to get the most out of your semi truck’s speakers and breathe new life into your music. You can use a 4-channel amp to run all 4 speakers or switch to a 3-channel mode to power a couple of speakers and bridge the power of 2 channels to drive your high-RPM sub or two. This way you can enjoy clean highs and deep lows that will make your music sound more dynamic. This type of amp can be also used to bi-amp a pair of component speakers. Most of the 4-channel amplifiers are class A/B, capable of delivering the most amount of power with the least amount of distortion, so you can experience a high-fidelity sound. However, in recent years, full-range class D amps are rising in popularity due to their small size, light weight, and capability to generate less heat while delivering the stunning sound that’s almost the same as produced by A/B amplifiers. They may also feature preamp outputs, bass boost, have a built-in crossover, and Bluetooth.
