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The Best 4 channel power amplifier of 2023 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best 4 channel power amplifier of 2023. Check our ranking below.

2,699 Reviews Scanned

Rank No. #1
Sound Town 4-Channel 4 X 750W at 4-ohm, 6000W Peak Output Professional Power Amplifier (NIX-6000X4)
  • MASSIVE POWER - 4 x 375W RMS @ 8-Ohm Stereo, 4 x 750W RMS @ 4-Ohm Stereo, 6000W peak output; channel 1 & 2, Channel 3& 4 can be bridged respectively to provide even massive power
  • GREAT CONNECTING FLEXIBILITY - Four 1/4" and two pair of RCA input connectors, four speakon and two pair of binding post output connectors provide great compatibility with your PA system
  • WORRY FREE PROTECTION - Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers without unprofessional distortion
  • EFFICIENT OPERATION - Efficient dual DC fans prevent excessive thermal buildup and ensure efficient operation and long life
  • STURDY CONSTRUCTION - Rugged, heavy-duty metal 2U rackmount chassis holds up to touring applications
Rank No. #2
Pyle 4 Multi-Zone Stereo Amplifier - 19” Rack Mount, Powerful 8000 Watts with Speaker Selector Volume Control & LED Audio Level Display - 4-Ch. Bridgeable Switches - Pyle PT8000CH
  • MULTI-ROOM MUSIC: Let music follow you from room to room. This home audio amplifier supports powering up multiple speakers in the same wired system, so you can listen or dance to the same tune in nearly every room, from just about any source or device you desire
  • 8-CHANNEL HIGH POWER AMPLIFIER: 100w per channel deliver high power performance with 5-way speaker binding posts (Banana Plug) outputs, pass-through output for external amplifier linking (Daisy-Chaining) & integrated 4-channel bridgeable switches
  • SPEAKER VOLUME CONTROL: This home audio amplifier has speaker selectors with volume control to manipulate the sound of multiple speakers simultaneously. Monitor audio levels with the LED display to check if the output is too loud or too soft
  • POWERFUL 8000 WATTS: All channels of this stereo power amplifier support a maximum 1000-watts each in a single rack-mountable unit. Bridge two adjoining channels for high-powered outputs and an earth-shattering sound
  • BUILT-IN LOW IMPEDANCE PROTECTION: Individual channels have built-in low impedance protection to prevent damaging the speaker or unit. It shuts down the faulty channels and provides uninterrupted music through the remaining good channels
Rank No. #3
Behringer NX4-6000 Power Amplifier
  • SmartSense Loudspeaker Impedance Compensation
  • Twist-lock Speaker Connectors
  • Thermal Overload Protection
  • 4-channel Power Amplifier
  • 2 x 3,000 Watts at 4 Ohms
Rank No. #4
MUSYSIC Professional 4-Channel Amplifier – 2x9600 Watts D-Class 1U Power Amp MU-D9600 High Performance Amplifier with Stereo & Bridge Power for Professional Use in Concerts & Functions and at Home
  • Transform your sound system with the power of amplifiers. Our amplifier with its 2x9600 Watts power takes a weak audio signal and amplifies it to deliver high-quality, amplified sound that can enhance your listening experience. This amplifier has SMT technology incorporated in it, which provides a quick and clear signal output for optimal system performance. Whether you're an audiophile, a musician, or just love music, our amplifier is a must-have.
  • Take your audio experience to the next level with the MUSYSIC 4 Channel Amplifier. This high-performance amplifier is equipped with 3 Step audio filtering and low-voltage power on function to deliver outstanding sound quality. Its frequency response ranges from 20Hz to 20KHz with UP TO 2x9600W PEAK Output, 2x4800W at Stereo and Bridge Program. Our Amplifier delivers powerful, distortion-free sound that will fill any room with loud and clear music; ideal for big parties.
  • The MUSYSIC MU-D9600 Amplifier is designed with versatility in mind. It features both XLR and 1/4-inch TRS inputs, and Speakon/locking type socket outputs on each channel so you can easily connect a variety of audio sources, from turntables and CD players to smartphones and laptops. Whether you're listening to music, watching a movie, or playing a video game, you'll experience rich, detailed sound that will bring your audio to life. (Specifications mentioned below)
  • Another standout feature of our MU-D9600 Amplifier is its build quality. The amplifier is constructed with high-quality materials; its Class A/B Output circuitry ensures long-lasting durability and reliability. The amplifier also features 3 Variable Speed Cooling fans which keep it cool and reduce the risk of overheating. Its Class D Protection Circuit helps to achieve well cut outputs that match the power handling of Club Series.
  • MUSYSIC Amplifier is packed with advanced features and latest technology our amplifiers ensure accurate sound reproduction. It has individual control panels for each channel which allow you to fine-tune your sound to your requirements. Upgrade your audio experience today and enjoy the powerful, distortion-free sound that the MUSYSIC Amplifier can deliver. Our amplifiers are perfect for performing on stage or recording in the studio. For home & professional use both.
Rank No. #5
Crown XTi1002 Two-channel, 500-Watt at 4Ω Power Amplifier
  • Peak x Plus Limiters provide the ultimate in system performance and protection by allowing full control over threshold, attack, and release
  • Enhanced Subharmonic Synth section provides user control over frequency, gain and filter type for system-specific tuning
  • 3 User-defined fan mode controls – normal, early and full speed – for matching fan performance to a specific application
  • Integrated cast-aluminum handles for easy handling and enhanced durability
  • Input: XLR (x2); Output: XLR (x2), Speakon (x2), Binding Post (x2 pair)
Rank No. #6
Behringer Europower EPQ304 Power Amplifier
  • Accelerated Transient Response technology
  • 4-channel Power Amplifier
  • with Built-in Limiters
  • 75W Peak/ch at 4 Ohms
  • 1U rackmount chassis
Rank No. #7
4 Channel Bluetooth Amplifier, 50W x 4 Audio Power Amp, Hi-Fi Home Stereo Speaker Receiver [Douk Audio M4]
  • One group of stereo RCA (CH3 and CH4) can be used as audio input or output by switching the selector, to acheive different demands
  • Supporting wired 2 groups of stereo RCA and wireless Bluetooth 5.0 input, compatible with most common audio device such as phones, computers, TVs, MP3, TV, CD players etc. With U-disk input, it can be used as a digital music player, supporting MP3, WAV, APE, FLAC and WMA lossless formats.
  • With 4 groups of speaker sockets output, they can output at the same time and each channel with independent volume control. Its max output power can reach 50W×4, and equipped with high-quality 24V/4.5A power supply, enough to drive most home speakers.
  • Reasonable circuit layout, concise wiring and high-quality components to ensure HiFi clear sound and long time stable work. Separate design of small and large signal circuit for better circuit protection. Bluetooth 5.0 version with high-gain antenna, ensure more stable and faster transmission.
  • Propersize with exquisite appearance, aluminum alloy case is CNC machined and with anodizing process, more fashionable and durable, very suitable for home, office and desktop audio system use.
SaleRank No. #8
Sound Town Ultra-Lightweight 1U 4-Channel PA/DJ Power Amplifier, 4 x 1400W at 4-ohm, Supports 2, 4 & 8-ohm (ST-UPDM4C)
  • Unipolar Pulse Density Modulation (UPDM) amplifier consumes ultra-low power
  • Output Power: 4 x 800W RMS at 8-Ohm Stereo, 4 x 1400W RMS at 4-Ohm Stereo, 4 x 850W RMS at 2-Ohm Stereo
  • XLR input and Speakon output connectors provide great compatibility and enable the amplifier to easily fit into your PA rigs
  • Overload protection functions keeps your PA speaker and subwoofers worry free
  • Rugged, heavy-duty metal 1U rackmount chassis holds up to touring applications. Ultra-lightweight (less than 9 lbs) makes it easy to transport
SaleRank No. #9
Pyle 500W Karaoke Wireless Bluetooth Amplifier - 4 Channel Stereo Audio Receiver with AUX IN, FM Radio, RCA Subwoofer Speaker OUT, USB, Microphone IN with Echo, 500W Peak Power into 4-8 OHMS - PTA44BT
  • 500 WATT POWER: The Pyle 4 Channel Bluetooth Home Audio Amplifier is perfect for your PA and home theater entertainment. It gives you 500W peak power which can be used for multi speakers with 4-8 ohms impedance allowing you to enjoy high quality audio
  • BLUETOOTH COMPATIBLE: The professional integrated indoor house stereo receiver is equipped with bluetooth wireless music streaming. Works with today’s latest devices including smartphones, tablets, laptops and computers with hassle free receiver pairing
  • 7 INPUTS: The personal portable digital amp box supports iPod or MP3, USB, micro SD, AUX playback, built in FM radio with digital LCD display, audio input and REC, plus subwoofer output RCA (L/R) connectors, 2 ¼” microphone inputs with echo
  • TALK OVER BUTTON: The compact speaker amplifier features a MIC talk over function which, when activated, the current music or audio being played will be temporarily halted. This function is used in paging, voice over, and announcements
  • EQ CONTROLS: The sound amplifying device has crisp buttons for the audio sources and selectors, rotary knob for equalization, mic and master volume adjustments. A remote control is also included in the package for distant audio adjustments
SaleRank No. #10
Pyle PTA42BT Wireless Karaoke Bluetooth Stereo Receiver - 4 Channel Power Amplifier w/USB,2 Microphone Input w/ Echo,Talkover for PA Great for Home Speaker System,Black
  • 500 Watt power: the Pyle 4-channel Bluetooth home audio amplifier is perfect for your PA and home theater entertainment. It gives you 500W peak power which can be used for multi speakers w/ 4-8 ohms impedance allowing you to enjoy high quality audio
  • Bluetooth connectivity: The professional integrated indoor stereo receiver is equipped with Bluetooth wireless music streaming. Works with today’s latest devices including smartphones, tablets, Laptops and computers with hassle-free receiver pairing
  • 7 inputs: The personal portable digital amp box supports iPod or MP3, USB, micro SD, aux playback, built-in FM radio w/ digital LCD display, audio input and Rec + Subwoofer output RCA (L/R) connectors. It also features 2 ¼” microphone inputs
  • Talk-over button: The compact amplifier features a mic Talk-over function which when activated, the current music or audio being played will be temporarily halted. This function is used in Paging, voice-over, and announcements
  • Eq controls: the sound amplifying device has crisp buttons for the audio sources and selectors, rotary knob for equalization, mic and master volume adjustments. A remote control is also included in the package for distant audio adjustments
Rank No. #11
Etlephe S-288 4 Channel Bluetooth 5.0 Home Audio Amplifier, 50Wx4, Max 1200W HiFi Stereo Power Amplifier USB, SD, FM Class D Speaker Amp for Home Theater Karaoke, with Power Adapter & Remote Control
  • 【4x50W + 4 Channel HIFI Amplifier】Gives you the maximum output power of 1200W that allows you to drive 2 pairs of high-capacity speakers,Small and portable, allows you to place it on a bookshelf or TV stand, and a microphone jack unique is perfect for your home entertainment and karaoke system.
  • 【Hi-Fi Sound Stereo Amplifier】 It has a high-capacity transformer that gives you clear sound without any distortion. It has a harmonic distortion of less than or equal to 0.04%, which helps you listen to crisp and crystal clear music.
  • 【Multiple Connectivity】The latest Bluetooth 5.0 version receiver which gives you a wide operating range. You can connect it with your streaming music devices like PC/Mobile/Laptop either with Bluetooth connection, 3.5mm AUX cable. It also supports USB and FM port.
  • 【Fuerte compatibilidad】amplificador Hi-Fi Admite reproducción de MP3, USB, micro SD, AUX, entrada de micrófono. La pantalla LED digital brillante le permite ver la configuración que cambia fácilmente.
  • 【Practical and Dignified】 Aluminum shell is more robust and durable. A bright LED display shows the status of the power amp in real time and shows whether Bluetooth is connected. This is handy and easy to use. Suitable for home audio, car audio, various parties, family parties, dance classes, bar, restaurant, night club, etc.
SaleRank No. #12
BOSS Audio Systems R1004 Riot Series 4 Channel Amplifier Car Audio - Class A/B, 400 High Output, 2-8 Ohm Stable, High/Low Level Inputs, Full Range
  • Power - 100 Watts Max X 4 @2-Ohms, 50 Watts Max X 4 @4-Ohms
  • Class A/B Topology - Class ‘A’ Amplifiers Have Enormous Amount Of Current Flowing Through Its Output Transistors With No Audio Signal. Class ‘B’ Amplifiers Have No Current Flowing Through Its Outputs With No Audio Signal
  • Full Range - With A Full Range Amplifier You Not Only Have The Option To Run Your Speakers, But Also Your Subwoofers
  • Specs - Dimensions: 7.8” x 9” x 2”, Weight: 3.09 lbs., Speaker Impedance: 2 to 8 Ohm, THD @ RMS Output: 0.01%, S/N Ratio: 90 dB, Frequency Response: 12 Hz to 22 kHz, Fuse Quantity: 1 15 Amp ATO Blade
  • BOSS Audio Systems provides a powerful 6-year Platinum Online Dealer Warranty so long as the purchase is made through Amazon.com. We strongly encourage professional installation of this product to ensure proper and safe functionality
Rank No. #13
Rockville 1800w Powered 4 Channel Mixer/Amplifier w USB/EQ/Effects/Phantom (RPM45)
  • Rockville RPM45 1800w Powered 4 Channel Mixer with USB, Effects, Phantom
  • RMS Power Output:. .....225w x 2 @ 8 Ohm (Parallel mono). Program Power Output:. .....450w x 2 @ 8 Ohm (Parallel mono)
  • Peak Power Output:. .....900w x 2 @ 8 Ohm (Parallel mono). Individual Volume, Reverb, Bass, and Treble controls. Adjustable effects: Echo and delay. USB Input. MP3 Volume control. AUX volume control
  • Master volume control. 4 balanced XLR inputs. 4 1/4” TRS inputs. 1 RCA L/R AUX input. 1 RCA L/R Rec output. 1 1/4” Effect loop input/output. 8-ohm dual 1/4” speaker outputs. +15V phantom power
  • Fan Vent Cooling System. Dimensions: 5.75” x 19.44” x 9.5”. Weight: 18Lbs
Rank No. #14
Rockville RPM48S 2000w Powered 4 Channel Mixer/Stereo Amplifier w Bluetooth/EQ,Black
  • RMS Power Stereo Output. 175W x 2 @ 8 Ohm. 250W x 2 @ 4 Ohm. Program Power Output. 350w x 2 @ 8 Ohm. 500W x 2 @ 4 Ohm. Peak Power Output.
  • 700W x 2 @ 8 Ohm. 1000W x 2 @ 4 Ohm. Built-in Bluetooth with long range and great sound quality. FM radio. Individual Volume, Echo, Bass, and Treble controls.
  • Adjustable echo and delay effects. 3-Band Equalizer (Treble, Mid, Bass). USB and SD Inputs. MP3 Volume control. Line In volume control. Master volume control.
  • A Pan knob on each channel for balancing left and right output. 4 balanced XLR inputs. 4 ¼˝ TS inputs. 1 RCA Line input. 1 ¼˝ line input. ¼˝ line output for adding a subwoofer or more amplifiers or powered speakers.
  • 1 RCA Rec output. L/R Speaker outputs: ¼˝ TS (4 or 8-ohm per channel). +48V phantom power. Fan Vent Cooling System. 110/220 Variable voltage. Dimensions: 18.9˝ x 8.9˝ x 6.3˝. Weight: 19.8 Lbs.
Rank No. #15
Crown XLi800 Two-channel, 300-Watt at 4Ω Power Amplifier
  • Two-channel, power amplifier. Professional DJ, PA, stage, home theater amp. Stereo/parallel/bridge-mono modes. 300W 4 Ohm Dual, 200W 8 Ohm Dual, 600W 8 Ohm Bridged. User selectable input sensitivity - 0.775V and 1.4V
  • Efficient forced-air cooling prevents excessive thermal buildup. Durable construction ensures long-lasting performance, making it ideal for professional DJs, musicians, and audio enthusiasts.
  • Electronically balanced RCA & XLR inputs; binding post and Speakon outputs. Versatile connectivity options making it compatible with a wide range of audio components and setups.
  • Advanced protection circuitry guards against shorts, no-load conditions, on/off thumps, and radio-frequency interference, ensuring reliable and uninterrupted performance for professional DJs and audio enthusiasts.
  • Two level controls, power switch, power LED, and six LEDs which indicate signal presence, clip and fault for each channel for easy monitoring, at a glance.
Rank No. #16
Donner Bluetooth 5.0 Stereo Audio Amplifier Receiver, 4 Channel 1000W Max Power Home Theater Stereo Receiver with USB, SD, FM, 2 Mic in Echo, RCA, LED, Speaker Selector for Studio, Home - MAMP5
  • 【1000 Watt max power Independent Control】Donner Bluetooth Stereo Audio Amplifier has 4 CHANNELS which is independently controlled. It gives you 1000W max power which can be used for 4 groups of 8 speakers with 4-8 ohms impedance allowing you to enjoy high quality audio.
  • 【Multiple Input Modes】In addition to the Bluetooth function, you can enjoy a range of audio sources including USB (Maximum 32G), SD card (Maximum 16G), 2 pairs RCA audio inputs for for CD player and DVD player, 2 1/4 inch(6.35mm) microphone inputs, 3.5mm AUX IN, and FM radio with our home theater receiver bluetooth amplifier. Supports treble and bass adjustment and microphone volume control.
  • 【Bluetooth 5.0】The professional integrated indoor stereo receiver is equipped with the new updated 5.0 bluetooth. It will increase the stability, sound quality and use distance. Stay connected up to 40+ feet/ 10 meters away and it works with latest devices including smartphone, tablet, laptop, computer, etc.
  • 【Dual Mic Interfaces】Take hosting to the next level with the flexibility of dual 1/4'' microphone jacks. Customize your karaoke nights, events, or presentations w/ independent controls of our home stereo receiver bluetooth amp.
  • 【HD LED SCREEN】The integrated receiver for home stereo has a built in LED display. FM Antenna and Remote Control are included in the stereo amplifier package for distant audio adjustments. (Notice: The product needs to be connected to passive speakers to play audio. When there is no speaker connected, there will be a certain amount of wind noise, which is normal.) Remote control can ONLY remotely control the volume of MP3/BT/FM.
Rank No. #17
Power Acoustik RZ4 3000D Razor Series Class D Full-Range & Monoblock Amp 4 Channels, 3,000 Watts Max
  • Class D
  • Small, Compact 4.75" Chassis
  • Mosfet Pwm Power Supply
  • High-level Input
  • Dim: 1.63"h X 4.75"w X 12.25"d
Rank No. #18
Power Acoustik Vertigo Series VA4-1800D, 1,800-Watt 4 Channel Car Stereo Amplifier, 4-Ch Class D Audio Voice Amp
  • 2 ohm stereo and 4 ohm bridged full range amp
  • 1,800 watts max power
  • 100 watts RMS x 4 at 4 ohms
  • 160 watts RMS x 4 at 2 ohms
  • 320 watts RMS x 2 at 4 ohms bridged
Rank No. #19
Rockville RPM45BT 1800w Powered 4 Channel Mixer/Amplifier w Bluetooth/EQ/Effects
  • Rockville RPM45BT 1800w Powered 4 Channel Mixer/Amplifier with Bluetooth/EQ/Effects.
  • RMS Power Output:. 225w x 2 @ 8 Ohm (Parallel mono). Program Power Output:. 450w x 2 @ 8 Ohm (Parallel mono). Peak Power Output:. 900w x 2 @ 8 Ohm (Parallel mono).
  • Built in Bluetooth with long range and great sound quality. Individual Volume, Reverb, Bass, and Treble controls. Adjustable effects: Echo and delay. USB Input. MP3 Volume control.
  • AUX volume control. Master volume control. 4 balanced XLR inputs. 4 1/4” TRS inputs. 1 RCA AUX input. 1 ¼” master line input. ¼” line output for adding a subwoofer or more amplifiers or powered speakers.
  • 1 RCA Rec output. 1 1/4” Effect loop input/output. Amplified speaker outputs: ¼” TS (8-ohm). +48V phantom power. Fan Vent Cooling System. Dimensions: 18.9” x 8.9” x 6.3”. Weight: 18 lbs.
Rank No. #20
Power Acoustik VA4-2200D Vertigo Series 2,200-Watt Max 4-Channel Class D Amp
  • 2 ohm stereo and 4 ohm bridged full range amp
  • 2,200 watts max power
  • 120 watts RMS x 4 at 4 ohms
  • 200 watts RMS x 4 at 2 ohms
  • 400 watts RMS x 2 at 4 ohms bridged

Last update on 2023-08-04 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

How Do You Buy The Best 4 channel power amplifier?

Do you get stressed out thinking about shopping for a great 4 channel power amplifier? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching 4 channel power amplifier, which is why we have assembled a comprehensive list of the greatest 4 channel power amplifier available in the current market. We’ve also come up with a list of questions that you probably have yourself.

We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 4 channel power amplifier that you consider buying. Your questions might include the following:

  • Is it worth buying an 4 channel power amplifier?
  • What benefits are there with buying an 4 channel power amplifier?
  • What factors deserve consideration when shopping for an effective 4 channel power amplifier?
  • Why is it crucial to invest in any 4 channel power amplifier, much less the best one?
  • Which 4 channel power amplifier are good in the current market?
  • Where can you find information like this about 4 channel power amplifier?

We’re convinced that you likely have far more questions than just these regarding 4 channel power amplifier, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 4 channel power amplifier, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 4 channel power amplifier. Make sure that you are only using trustworthy and credible websites and sources.

We provide an 4 channel power amplifier buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 4 channel power amplifier currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of 4 channel power amplifier has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 4 channel power amplifier?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 4 channel power amplifier.
  5. Customer Ratings: Number ratings grade 4 channel power amplifier objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 4 channel power amplifier.
  7. Product Quality: You don’t always get what you pay for with an 4 channel power amplifier, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an 4 channel power amplifier is should be an indication of how long it will work out for you.

We always remember that maintaining 4 channel power amplifier information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

If you think that anything we present here regarding 4 channel power amplifier is irrelevant, incorrect, misleading, or erroneous, then please let us know promptly! We’re here for you all the time. Contact us here. Or You can read more about us to see our vision.

FAQ:

Q: What is the best 4 channel amplifier?

A: The Best 4 Channel Amp on the Market of 2019 1. Blaupunkt 4-Channel Amplifier (Our Top Recommended) 2. Rockford Fosgate R400-4D Full-Range 4-Channel Amplifier 3. Rockford Fosgate R250X4 Prime 4-Channel Amplifier 4. Alpine MRV-F300 4-Channel Car Amplifier 5. Kenwood KAC-M3004 4-Channel Digital Amplifier

Q: Can You Bridge a 4 channel amp?

A: Bridging a four-channel car audio amplifier will effectively double your amp’s output (watts) so that you can drive more power to your speakers or subwoofers. It’s relatively easy to bridge a four-channel amp as long as you have a very basic knowledge of car audio wiring and how to connect an amp to your car’s audio system.

Q: Can I hook up 4 speakers to a 2 channel amp?

A: There are two ways to wire four speakers to a two channel amplifier: in series or in parallel. Which one to choose depends on both the speakers and the amplifier, specifically their impedance levels and limits. Wiring speakers in series raises the impedance delivered to the amplifier, while wiring them in parallel lowers it.

Q: What is a 4 channel audio amplifier?

A: A 4 channel amplifier is a stereo amplifier with 2 more channels built in to boost (amplify) weak input signals to a higher voltage signal. This drives speaker voice coils to move the speaker cone and produce sound.

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