If you want to install a sound system in your home, you can choose a complete system, pre-designed by the manufacturer, or a customized configuration. The first option is not bad, but if you want something more exclusive, versatile, and with specific characteristics, it is best to assemble it by parts. These are, in essence, a player, an amplifier, and a speaker system, which you can choose according to your needs.

If you already have a player and speakers, or you already know what you want, a fundamental part of the system is missing, which is the amplifier. This equipment is responsible for taking the signal from the music player and increasing its electrical power to send it to the speakers and other sound equipment. Choosing the right model is not very difficult, but it is essential to pay attention to specific characteristics so that the set works perfectly. To do this, you must carefully review its specifications, making sure they fit the rest of the system you are going to mount.

Innovations in technology have been improving home sound systems, and it is also becoming easier to buy cheap, good quality stereo amplifiers.

According to HowToSucceedBroadway the best HiFi amplifier is the one that can reproduce a clear sound, faithful to the source, the more natural, the better.

For several decades and with the appearance of stereo music equipment, we can listen to music at home, enjoying it with the highest resolution.

If we have excellent speakers, we must invest the money necessary to buy a HiFi amplifier that is up to the task.

Below is our selection of the best quality/price HiFi amplifiers for you to choose:

1.Audioronics AR512BT Digital Spectrum Built-In Wireless Audio Streaming Integrated Amplifier & Pre-Amp Stereo Receiver

Speaker Wire enables you to quickly connect your speakers to a piece of audio equipment such as receivers & amplifiers. It is an excellent option for car lovers, automotive, school, church, auditorium, or business settings.
As per dimensions, it is as per add it is 17″ X 5.25″ X12.5.

• PACKAGE BUNDLE INCLUDES: 1 Audioronics AR512BT Stereo Home Bluetooth Amplifier Receiver Unit – 2x Enrock 50 Feet (total 100ft) 18 gauge Home Speaker Wire
• HOME STEREO RECEIVER: The Audioronics AR512BT 1500W Integrated Amplifier puts out a considerable amount of power. It has built-in preamp controls and mic inputs for karaoke or DJ or live applications. The digital display looks phenomenal. It has all the controls, data, and outputs for you to integrate this with your entire system.
• SPECIFICATIONS: The AR512BT was envisioned with functionality in mind. The AR512BT comes equipped with RCA inputs that take audio from up to three sources. The unit also takes sound from iPods and MP3 players, while a built-in AM/FM tuner even allows you to play music off the radio. With the Audioronics receiver, you get unmatched audio from as many sources as you want.

2.Nobsound G3 2 Channel Bluetooth 5.0 Power Amplifier

When it comes to switching between audio sources, its Bluetooth has priority. If one needs to change it to AUX input, he/she has to disconnect the Bluetooth. We recommend the following one https://www.amazon.com/dp/B07HR7PRV5. The price and power are the same. But Tone can switch between RCA/AUX/Bluetooth/USB very quickly with a short press on the knob.

• Bluetooth 5.0 can ensure a more stable and faster wireless transmission with fewer losses. It can turn your standard passive speakers to Bluetooth speakers.
• Besides BT 5.0, this device also supports standard 3.5mm AUX input. This amp can be connected with a mobile phone, notebook, PC, PSP, CD, and so on.
• Classic TPA3116 amplifier chip & 3 x TL072 independent OP amps. It can offer 100W (50Wx2), which suits 3~6 inches, 2.0CH speakers. The sound is mighty and clean. There is no background noise and pop.
• Unlike other similar TPA3116 amplifiers, this one has no power sparks issue. It also has a built-in protective circuit to avoid damage to your speakers—higher quality at lower prices.
• More features: Independent treble & bass tone control. High quality 19V 4.74A power supply. Prompt and courteous customer service.18-month warranty and life technical support.

3.Crunch PowerDriveX 1000 Watt 4 Channel Exclusive Blue A/B Car Stereo Amplifier

You need to make sure that you follow the instructions and hook the ground to the chassis, or it won’t work as it should be.

• 1000 watt 4 channel PowerDriveX series, class AB car amplifier
• Low noise pre-amplifier
• The maximum low voltage signal from the source unit comes into the amplifier circuit with minimal distortion
• Low-level RCA inputs and outputs
• The highest sound quality connection

4.PYRAMID PB918 2000W 2 Channel Car Audio Amplifier

This amplifier s a perfect match for music lovers on a budget.

• New Pyramid PB918 1000 Watt 2 Channel Car Amplifier
• 2 Channel Amplification
• 2×1000W Max Output
• 1×2000W Watts 2 Bridged

5.Pyle 4-Channel Bluetooth Home Power Amplifier

The only shortcoming of this advice is humming, but it’s only present when no sound is playing. It is a small detail. Many are willing to sacrifice for the price.

• 2000-WATT POWER: The Pyle 4 Channel Pre-Amplifier is perfect for your home entertainment system. It gives you 2000 watts peak power to be used for multi speakers w/ 2-8 ohms impedance allowing you to enjoy high-quality audio
• BLUETOOTH ENABLED: The integrated hybrid amplifier is equipped with Bluetooth for wireless music streaming. This device works with today’s latest devices, including smartphones, tablets, laptops, computers, etc. Features a built-in 2.4GHz antenna for extended range
• 7 INPUTS: The personal portable digital amp box supports headphone, USB, iPod, MP3, AM FM tuner, AUX, DVD CD player, two microphones input w/ echo for karaoke or event hosting, recline, 1 RCA preamp output and two mono RCA dedicated for subwoofer
• A/B SPEAKER SELECTOR: The professional integrated stereo receiver has an A/B speaker selector enabling you to choose b/w speaker set. Use either A or B speakers or both. Note that when it is turned on initially, it uses both speakers as default
• EQ CONTROLS: The sound amplifying device has crisp buttons for the audio sources and selectors, rotary knob for equalization, and master volume adjustments. It also features blue LED lights which brightness can be adjusted through the LED dimmer
• Connectivity technology: USB; Bluetooth
• Included components: Pre-Amplifier Receiver Remote Control Power Cable AM/FM Antennas Detachable Rack Mount Brackets

6.BOSS Audio Systems R1100MK Car Amplifier and 8 Gauge Wiring Kit

 

Some had issues running theirs at 2 ohms despite the claimed stability. For anyone considering this with realistically lower-rated subs, don’t worry about the 1100 watt or even 825-watt ratings. This amp is only capable of 350 watts continuous output at even 2 ohms and will have a tough time blowing even low-end subs.

• WIRING INSTALLATION KIT: 30 Ft Speaker Wire, 20 ft. 8 GA Red Power Cable, 16 ft. 18 GA Blue Turn-On Wire, 3 ft. 8 GA Black Ground Cable, Competition Quality Fuse Holder with AGU Fuse
• WIRING INSTALLATION KIT CONTINUED: 10 5/16″ and 1/4″ Ring Terminals, 6 ft. Split Loom Tubing, 3 Rubber Grommets, 20 4″ Wire Ties, 20 ft. High-Performance blue RCA (TRCA) Interconnect
• AMPLIFIER POWER: 1100 Watts Max x 1 @2-Ohms, 550 Watts Max x 1 @4-Ohms
• CLASS A/B TOPOLOGY: Class’ A’ amplifiers have an 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. Efficiency is the name of the game
• MOSFET POWER SUPPLY: A MOSFET is an electrical switch that allows the flow of electrical current. It controls the output voltage and current precisely by removing the output current sensing loss And eliminating all secondary feedback circuitry
• DIMENSIONS: The R1100M is 9. 1 inch in Depth, 10. 4 inches in Width, and 2. 3 inches in Height. It weighs 4. 4 lbs.
• VARIABLE LOW-PASS CROSSOVER: Subwoofers reproduce sound based on several different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction
  SWITCHABLE BASS BOOST: Bass Boost allows you to adjust the low bass within the boost range to just the way you like it.

7.Rockville dB55 4000 Watt/2000w RMS 5 Channel Car Stereo Amplifier+Amp Kit Loud

This amp far exceeded our expectations. They built solid, good looking, and a clean, powerful amp with an affordable price tag. Some people used it after installing on a 12-hour road trip powering four full-range speakers and 2 8″ subs with no issues at all, sometimes very loudly too. Great amp for the money and better than some other more expensive ones.

• Package Includes (1) Rockville dB55 4000 Watt/2000w RMS 5 Channel Amplifier Car Stereo Amp, Loud!!. (1) Rockville RWK21 2 Gauge Amp Wire Kit ANL Fuse Holder 100% Copper RCA. (2) Rockville RTR172 17 Foot 2 Channel Twisted Pair RCA Cables Split Pin 100% Copper.
• Rockville dB55 4000 Watt/2000 Watt RMS 5 Channel Amplifier. CEA Compliant Power Ratings (Rated at less than 1 % distortion) (Use these CEA ratings when matching and comparing with other CEA compliant brands such as Kicker, Rockford Fosgate, etc.). 2 Ohm: 120 Watts x 4 + 500 Watts x 1 <1% THD+N. 4 Ohm: 80 Watts x 4 + 300 Watts x 1 <1% THD+N. RMS Power Ratings: (Use these RMS ratings when comparing with great brands such as Hifonics, Earthquake, Soundstream, etc.).
• 2 Ohm 240 Watts x 4 + 1000 Watts x 1. 4 Ohm: 160 Watts x 4 + 600 Watts x 1. Peak: (The amount of power the amplifier can produce for a split second at the loudest part of a song. 2 Ohm 480 Watts x 4 + 2000 Watts x 1. 4 Ohm: 320 Watts x 4 + 1200 Watts x 1. High-Speed MOSFET Power Supply. Rugged switching MOSFETs for Class D in CH5. Under Voltage Protection at 10V. Over Voltage Protection at 16V.
• Rockville RWK21 2 Gauge Car Amplifier Wiring Installation Kit. (1) 17 High-Grade Twisted Pair of 100% Copper RCA Cable. 17′ 2 Gauge Translucent Blue SuperFlex Power Cables. 17 18 Gauge Blue Remote Cable. 17 16 Gauge Clear Speaker Wire. 3 4 Gauge Clear SuperFlex Ground Wire. Gold Plated ANL Heat Resistant Fuse Holder. 150 Amp ANL Gold Plated Fuse. 7 Split Tube Loom. Accessories Included: Wire Ties, Ring Terminals, Butt Connectors, Spades, and Grommets.
• Rockville RTR172 17 Foot 100% Copper 2-Channel Twisted Pair RCA Cable. Oxygen-Free Copper. 100% Oxygen Free Copper. Premium Audiophile RCA Interconnect Cables. Split Pin Technology Ensures a Secure Connection. Outstanding Noise Rejection, Accuracy, and Frequency Response. Color-Coded Channel Identification. Length: 17-Foot. Rockville 1 year warranty. Also Available in 3-Foot, 6-Foot, 12-Foot, 20-Foot, and 25-Foot.

8.Home Audio Power Amplifier System

This device sounds fantastic! Many people use this product to receive a signal from a DAC that’s receiving the message from a Windows 10 machine. It doesn’t need that much power as the “Big Brother” has. We definitely recommend this product. If you need something essential to power speakers, this is a great buy. You’re not going to find this listed in the “Recommended Components” list in Stereophile Magazine, but you won’t be disappointed either.

• 300 WATT POWER: The Pyle Digital AM/FM Stereo Receiver is perfect for your PA, karaoke and home entertainment system It gives you 300W peak power to be used for multi speakers w/ 4-16 ohm impedance allowing you to enjoy high quality amplified audio
• 7 INPUTS: The personal digital amp box supports iPhone, smartphone, computer, iPad, USB, MP3, AM FM radio tuner, DVD CD player Features 2 microphone inputs for karaoke, 2 RCA inputs, 2 RCA outputs, four pairs of speaker terminal binding posts
• MIC EFFECTS: The professional integrated indoor house stereo receiver features echo effect, mic bass, mic treble, and volume leaving you in full control of the output sound Perfect for karaoke, event hosting, public gatherings and announcements
• EQ CONTROLS: The sound amplifying device has crisp buttons for the audio sources and selector, rotary knob for equalization, mic and master volume adjustments It features blue LED illuminated buttons to adjust the functions even in the dark easily
• DISPLAY METER: The compact and rack mount amplifier has a built-in digital LCD meter which displays all the features and input used Antenna, audio cable cord, and remote control are also included in the package for distant audio adjustments

Additional info and tips

Power and distortion

One of the main characteristics of an audio amplifier is the output power, which represents what it is capable of delivering to the speakers through its different output connections. What is essential is that the quality of the sound is not altered in this process. Also, make sure that the equipment is capable of operating stably without generating distortion, so as not to damage the speakers.

That can be verified by comparing the graph of the input sound with that of the output. This characteristic is represented by the total harmonic distortion level (THD), a percentage that must never exceed 0.1%. The less the output impedance, the lower this index will be, but you must take into account the maximum that the specifications show. For reference, high-end amplifiers can have a THD of three decimal places (for example, 0.005%). The low-end ones only show one decimal, so they generate a noticeable distortion when turning up the volume, and it is advisable to look for a device that has a THD of at least two decimal places.

Don’t underestimate the system!

Once you take this factor into account, you can choose the equipment based on the ultimate power of the speakers you want to install. But, for the amplifier to meet these specifications, you should not pay attention to the nominal force. The parameter to consider is the so-called RMS power of the speakers, also measured in watts, which is measured in laboratories using standardized tests, based on the impedance of the system.

Ideally, the amplifier offers a power somewhat higher than the sum of all the speakers you are going to mount. And this power in the amp is specified based on the output impedance (specific watts at specific ohms). Furthermore, it is essential to consider the amplifier’s output channels and the power each can deliver at each impedance. For example, if you have two channels with 150 watts each at 4 ohms, you can connect 4-ohm speakers with a maximum of 150 watts on each channel. And, if these are 8 ohms, they will sound at half that power.

It is convenient, especially in mid or low range amplifiers, to connect speakers with an impedance equal to or higher than the minimum that the amplifier offers. If you do, the equipment will generate a lot of distortion and could end up being damaged. Therefore, when configuring your system, you should carefully review the characteristics of all the components.

Electric stability

Another vital thing to keep in mind when choosing an amplifier is the quality of its power supply. Since it is responsible for supplying the electrical power to the signal being amplified, it should be able to withstand the impedance fluctuations of the speakers without generating distortion.

Also, this source can be duplicated for each channel (left and right), which guarantees more excellent reliability and stability. This factor is essential, since a system with a lot of power, but with an inadequate power supply, will provide a weaker sound than another one with less energy, but with a better-built source.

Hope this article was useful to you!