Best 8 Variable Gain Amplifiers in 2026

Daisy
Last Updated: Feb 7, 2026

At a Glance: Our Top Picks for 8 Variable Gain Amplifiers

BOSS Audio Systems R1100M Riot Series Car Audio Subwoofer Amplifier - 1100 High Output, Monoblock, Class A/B, 2/4 Ohm Stable, Low/High Level Inputs, Low Pass Crossover, Mosfet Power Supply, Stereo
#TOP1
Boss Audio Systems R1100M Riot Series Car Audio
9.9
PM SCORE
Rockford Fosgate R2-500X1 Prime 500-Watt Mono Amplifier
#TOP2
Rockford Fosgate R2-500X1 Prime 500-Watt Mono Amplifier
9.7
PM SCORE
Rockford Fosgate R2-250X1 Prime 250-Watt Mono Amplifier
#TOP3
Rockford Fosgate R2-250X1 Prime 250-Watt Mono Amplifier
9.7
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best 8 Variable Gain Amplifiers of 2026

Market Overview
8 Variable Gain Amplifiers Reviewed
  • Reviews Analyzed: 37564 Items
  • PM Avg. Rating: 9.2 / 10
23 Products Evaluated
  • Highest Price: $379.99
  • Lowest Price: $44.19
  • Avg. Price: $129.32

Boss Audio Systems R1100M Riot Series Car Audio Subwoofer Amplifier - 1100 High Output, Monoblock, Class A/B, 2/4 Ohm Stable, Low/High Level Inputs, Low Pass Crossover, Mosfet Power Supply, Stereo

BOSS AUDIO SYSTEMS
R1100M
9.13 X 10.44 X 2.25 Inches
4.40 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speece, Inc. 9.88

Features

Power - 1100 Max x 1 @ 2 Ohms, 550 Max x 1 @ 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

Mosfet Power Supply - A MOSFET is an electrical switch that allows the flow of electrical current. It controls the output voltage & current precisely by removing the output current sensing loss & eliminating all secondary feedback circuitry

Low & High Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers

Variable Low-Pass Crossover - Subwoofers reproduce sound based on a number of 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

Variable Input Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

Specs - Dimensions: 9.13” x 10.44” x 2.25”, Weight: 4.43 lbs., Speaker Impedance: 2 to 8 Ohm, THD @ RMS Output: 0.01%, S/N Ratio: 102 dB, Frequency Response: 9 Hz to 50 kHz, Fuse Quantity: 1 30 Amp ATO Blade

Warranty - BOSS Audio Systems provides a 6 Year Platinum Online Dealer Warranty for purchases through Amazon.Com. We strongly encourage professional installation of this product to ensure proper functionality

Rockford Fosgate R2-500X1 Prime 500-Watt Mono Amplifier

ROCKFORD FOSGATE
R2-500X1
0.00 X 0.00 X 0.00 Inches
4.38 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AVLeaderz 9.87

Features

The R2-500X1 full-range class-D mono amplifier (1.9" x 6.8" x 8.5") is packed with features and performance to deliver power and bass on demand with 500 Watts of RMS power

Class D technology makes this amp extremely efficient by reducing demand on the vehicles electrical system (RMS Power: 300 Watts x 1 @ 4Ω OR 500 Watts x 1 @ 2Ω)

Featuring C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass

Designed for subwoofers, a variable infrasonic filter and remote level control allows you to tune the bass for the desired level for the music

Famous Rockford Fosgate build quality with a full 1-year warranty when purchased from an authorized Rockford Fosgate reseller

Rockford Fosgate R2-250X1 Prime 250-Watt Mono Amplifier

ROCKFORD FOSGATE
R2-250X1
0.00 X 0.00 X 0.00 Inches
5.48 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Audio Watt Store 9.89

Features

The R2-250X1 full-range class-D mono amplifier (1.9" x 6.8" x 8.1") is packed with features and performance to deliver power and bass on demand with 250 Watts of RMS power

Class D technology makes this amp extremely efficient by reducing demand on the vehicles electrical system (RMS Power: 150 Watts x 1 @ 4Ω OR 250 Watts x 1 @ 2Ω)

Featuring C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass

Designed for subwoofers, a variable infrasonic filter and remote level control allows you to tune the bass for the desired level for the music

Famous Rockford Fosgate build quality with a full 1-year warranty when purchased from an authorized Rockford Fosgate reseller

#TOP4

Planet Audio Ac2000.2 Anarchy Series Car Audio Amplifier - 2000 High Output, 2 Channel, 2/8 Ohm, High/Low Level Inputs, High/Low Pass Crossover, Full Range, Hook Up To Stereo And Subwoofer,Black

PLANET AUDIO
AC2000.2
16.00 X 10.00 X 2.40 Inches
10.40 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
CE Showroom 9.89

Features

Power - 1000 Watts Max x 2 @2-Ohms, 500 Watts Max x 2 @4-Ohms, 2000 Watts Max x 1 Bridged @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

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 & eliminating all secondary feedback circuitry

Variable High-Pass Crossover - Speakers reproduce sound based on high, low or mid-range frequencies. What the Variable High-Pass Crossover does is that it gears specifically towards “highs” such as all size speakers including mid ranges and tweeters

Variable Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

Bridgeable - Dramatically increase the power output to you speakers and subwoofers by connecting two amplifier channels

Specs - Dimensions:16” x 10” x 24”, Weight: 10.40 lbs.

Rockford Fosgate R2-1200X1 Prime 1200-Watt Mono Amplifier

ROCKFORD FOSGATE
R2-1200X1
0.00 X 0.00 X 0.00 Inches
7.70 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AVLeaderz 9.87

Features

The R2-1200X1 full-range class-D mono amplifier (1.9" x 6.8" x 11.3") is packed with features and performance to deliver power and bass on demand with 1200 Watts of RMS power

Class D technology makes this amp extremely efficient by reducing demand on the vehicles electrical system (RMS Power: 400 Watts x 1 @ 4Ω OR 800 Watts x 1 @ 2Ω OR 1200 Watts x 1 @ 1Ω)

Featuring C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass

Designed for subwoofers, a variable infrasonic filter and remote level control allows you to tune the bass for the desired level for the music

Famous Rockford Fosgate build quality with a full 1-year warranty when purchased from an authorized Rockford Fosgate reseller

Rockford Fosgate R2-750X1 Prime 750-Watt Mono Amplifier

ROCKFORD FOSGATE
R2-750X1
0.00 X 0.00 X 0.00 Inches
4.98 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Rockford Fosgate 9.94

Features

The R2-750X1 full-range class-D mono amplifier (1.9" x 6.8" x 10.1") is packed with features and performance to deliver power and bass on demand with 750 Watts of RMS power

Class D technology makes this amp extremely efficient by reducing demand on the vehicles electrical system (RMS Power: 250 Watts x 1 @ 4Ω OR 500 Watts x 1 @ 2Ω OR 750 Watts x 1 @ 1Ω)

Featuring C.L.E.A.N. circuitry to help you adjust your gain settings, a P.O.W.E.R. Supply that generates more power as voltage increases, and integrated Punch EQ that corrects for acoustic deficiencies while delivering up to 3X the bass

Designed for subwoofers, a variable infrasonic filter and remote level control allows you to tune the bass for the desired level for the music

Famous Rockford Fosgate build quality with a full 1-year warranty when purchased from an authorized Rockford Fosgate reseller

Skar Audio Rp-75.4Abm 500 Watt Full-Range Class A/B 4-Channel Marine Amplifier

SKAR AUDIO
RP-75.4ABM
13.78 X 6.30 X 2.20 Inches
7.50 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
SKAR AUDIO 9.84

Features

500-Watt MOSFET 4-Channel Class A/B Power Marine Amplifier

RMS Power at 2 Ohms: 125 Watts x 4 Channels

RMS Power at 4 Ohms: 75 Watts x 4 Channel

Fully Marini zed with Waterproof Coating on Circuit Board & Rust Proof Painting on Mechanical Case

User Adjustable Controls: Gain, Variable LPF, HPF, Bass EQ Switch (0, +6, +12 dB)

Featuring 4-Way Protection Circuitry and 4 Gauge Power & Ground Input Terminals for Maximum Current Flow

Signal to Noise Ratio: 105 dB, 8 Gauge Power and Ground Input Terminals

#TOP8

Boss Audio Systems Ar2000M Monoblock Car Amplifier - 2000 Watts, 2-4 Ohm Stable, Class A-B, Mosfet Power Supply, Gray

BOSS AUDIO SYSTEMS
AR2000M
13.10 X 6.50 X 2.80 Inches
6.95 pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
CE Showroom 9.89

Features

Power - 2000 watts Max X 1 @2-ohms, 1000 watts Max X 1 @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

Low/high level inputs - a low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers

Variable low-pass Crossover - subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction

Variable bass Boost - bass Boost allows you to adjust the low bass within the boost Range to just the way you like it

Variable gain control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

Dimensions - 13.13” x 6.5” x 2.8”, weight - 3.81 lbs. It can be installed in a variety of different places due to its’ slim and Compact design

Warranty - BOSS Audio 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

#TOP9

Sound Storm Ev2.1000 Evolution 1000 Watt, 2 Channel, 2 To 8 Ohm Stable Class A/B, Full Range, Bridgeable, Mosfet Car Amplifier With Remote Subwoofer Control

SOUND STORM LABORATORIES
EV2.1000
9.50 X 10.00 X 2.30 Inches
6.20 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BargainFlip 9.88

Features

550 W MAX Power @ 2 Ohm x 2 Channels

250 W MAX Power @ 4 Ohm x 2 Channels

1000 W MAX Bridged Power @ 4 Ohm x 1 Channels

Full-Range, Class A / B Topology, MOSFET Power Supply

Low and High Level Inputs, Variable Low Pass Crossover, Variable High Pass Crossover

Variable Bass Boost, Variable Input Gain Control, Input Sensitivity Selector, Remote Subwoofer Control

Dimensions: Depth 9.5” x Width 10” x Height 2.3”

6 Year Platinum Online Dealer Warranty

#TOP10

Sound Storm Ev2.2000 Evolution 2000 Watt, 2 Channel, 2 To 8 Ohm Stable Class A/B, Full Range, Bridgeable, Mosfet Car Amplifier With Remote Subwoofer Control

SOUND STORM LABORATORIES
EV2.2000
16.00 X 10.00 X 2.30 Inches
10.10 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Moofin 9.87

Features

1000 W MAX Power @ 2 Ohm x 2 Channels

500 W MAX Power @ 4 Ohm x 2 Channels

2000 W MAX Bridged Power @ 4 Ohm x 1 Channels

Full-Range, Class A / B Topology, MOSFET Power Supply

Low and High Level Inputs, Variable Low Pass Crossover, Variable High Pass Crossover

Variable Bass Boost, Variable Input Gain Control, Input Sensitivity Selector, Remote Subwoofer Control

Dimensions: Depth 16” x Width 10” x Height 2.3”

6 Year Platinum Online Dealer Warranty

#TOP11

Boss Audio Systems R1002 Riot Series Car Stereo Amplifier - 200 High Output, 2 Channel, Class A/B, 2/4 Ohm Stable, Low/High Level Inputs, Full Range, Use With Subwoofer

BOSS AUDIO SYSTEMS
R1002
5.30 X 9.00 X 2.00 Inches
2.20 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speece, Inc. 9.88

Features

Power - 100 Max x 2 @ 2 Ohms, 50 Max x 2 @ 4 Ohms

Full Range - With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers

Low & High Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers

Variable Input Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

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

Specs - Dimensions: 5.25” x 9” x 2”, Weight: 2.2 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 7.5 Amp ATO Blade

BOSS Audio Systems provides a 6 Year Platinum Online Dealer Warranty for purchases through Amazon.Com. We strongly encourage professional installation of this product to ensure proper functionality

#TOP12

Boss Audio Systems R6002 Riot Series Car Audio Stereo Amplifier - 1200 High Output, 2 Channel, Class A/B, 2/4 Ohm, Low/High Level Inputs, High/Low Pass Crossover, Full Range, Bridgeable, Subwoofer

BOSS AUDIO SYSTEMS
R6002
12.28 X 10.44 X 2.25 Inches
5.90 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speece, Inc. 9.88

Features

Power - 600 Max x 2 @ 2 Ohms, 300 Max x 2 @ 4 Ohms, 1200 Max Bridged x 1 @ 4 Ohms

Full Range - With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers

Low & High Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers

Variable Input Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

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

Mosfet Power Supply - A MOSFET is an electrical switch that allows the flow of electrical current. It controls the output voltage & current precisely by removing the output current sensing loss & eliminating all secondary feedback circuitry

Specs - Dimensions: 12.28” x 10.44” x 2.25”, Weight: 5.86 lbs., Speaker Impedance: 2 to 8 Ohm, THD @ RMS Output: 0.01%, S/N Ratio: 102 dB, Frequency Response: 9 Hz to 50 kHz, Fuse Quantity: 2 25 Amp ATO Blade

Warranty - BOSS Audio Systems provides a 6 Year Platinum Online Dealer Warranty for purchases through Amazon.Com. We strongly encourage professional installation of this product to ensure proper functionality

Boss Audio Systems R3002 Riot Series Car Audio Amplifier - 600 High Output, 2 Channel, 2/8 Ohm, High/Low Level Inputs, High/Low Pass Crossover, Full Range, Hook Up To Stereo And Subwoofer, Class Ab

BOSS AUDIO SYSTEMS
R3002
9.16 X 10.44 X 2.25 Inches
4.59 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speece, Inc. 9.88

Features

Power - 300 Max x 2 @ 2 Ohms, 150 Max x 2 @ 4 Ohms, 600 Max Bridged x 1 @ 4 Ohms

Bridgeable - Dramatically increase the power output to you speakers and subwoofers by connecting two amplifier channels

Low & High Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers

Variable Low-Pass Crossover - Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction

Fixed High-Pass Crossover - Speakers reproduce sound based on high, low or mid-range frequencies. The High-Pass Crossover gears specifically towards “highs” in all size speakers including mid ranges and tweeters

Variable Bass Boost - With Variable Bass Boost you have the control of exactly how much BASS you want to pump out to your subwoofer(s)

Variable Input Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

Specs - Dimensions: 9.16” x 10.44” x 2.25”, Weight: 4.25 lbs., Speaker Impedance: 2 to 8 Ohm, THD @ RMS Output: 0.01%, S/N Ratio: 102 dB, Frequency Response: 9 Hz to 50 kHz, Fuse Quantity: 1 35 Amp ATO Blade

Warranty - BOSS Audio Systems provides a 6 Year Platinum Online Dealer Warranty for purchases through Amazon.Com. We strongly encourage professional installation of this product to ensure proper functionality

#TOP14

Boss Audio Systems Pt1600 2 Channel Car Amplifier – Phantom Series, 1600 Watts, Full Range, Class A/B, 2-8 Ohm Stable, Mosfet Power Supply, Bridgeable

BOSS AUDIO SYSTEMS
PT1600
14.00 X 10.31 X 2.25 Inches
9.10 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speece, Inc. 9.88

Features

Power - 800 Watts Max x 2 @2-Ohms 400 Watts Max x 2 @4-Ohms 1600 Watts Max x 1 Bridged @4 Ohms

Full Range - With a Full Range amplifier you not only have the option to run your speakers but also your subwoofers

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

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 & eliminating all secondary feedback circuitry

Variable Gain Control - The gain control is not for adjusting volume It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

Variable Bass Boost - With Variable Bass Boost you have the control of exactly how much BASS you want to pump out to your subwoofer(s)

Bridgeable - Dramatically increase the power output to you speakers and subwoofers by connecting two amplifier channels

Specs - Dimensions 14” x 10 3” x 2 3” Weight 9 lbs

- BOSS Audio Systems provides a powerful 6 year Platinum Online Dealer so long as the purchase is made through We strongly encourage professional installation of this product to ensure proper and safe functionality

#TOP15

Boss Audio Systems R4002 Riot Series Car Audio Stereo Amplifier – 800 High Output, 2 Channel, Class A/B, 2/4 Ohm, Low/High Level Inputs, High/Low Pass Crossover, Full Range, Bridgeable, Subwoofer

BOSS AUDIO SYSTEMS
R4002
10.72 X 10.44 X 2.25 Inches
5.53 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speece, Inc. 9.88

Features

Power - 400 Max x 2 @ 2 Ohms, 200 Max x 2 @ 4 Ohms, 800 Max Bridged x 1 @ 4 Ohms

Full Range - With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers

Low & High Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers

Variable Input Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

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

Mosfet Power Supply - A MOSFET is an electrical switch that allows the flow of electrical current. It controls the output voltage & current precisely by removing the output current sensing loss & eliminating all secondary feedback circuitry

Specs - Dimensions: 10.72” x 10.44” x 2.25”, Weight: 5.20 lbs., Speaker Impedance: 2 to 8 Ohm, THD @ RMS Output: 0.01%, S/N Ratio: 102 dB, Frequency Response: 9 Hz to 50 kHz, Fuse Quantity: 1 40 Amp ATO Blade

Warranty - BOSS Audio Systems provides a 6 Year Platinum Online Dealer Warranty for purchases through Amazon.Com. We strongly encourage professional installation of this product to ensure proper functionality

#TOP16

Boss Audio Systems Pt1000 2 Channel Car Amplifier - 1000 Watts, Full Range, Class A/B, 2-8 Ohm Stable, Mosfet Power Supply, Bridgeable

BOSS AUDIO SYSTEMS
PT1000
9.50 X 10.31 X 2.25 Inches
6.60 pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speece, Inc. 9.88

Features

Power - 500 Watts Max x 2 @2-Ohms, 250 Watts Max x 2 @4-Ohms, 1000 Watts Max x 1 Bridged @4 Ohms

Full Range - With a Full Range amplifier you not only have the option to run your speakers, but also your subwoofers

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

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 & eliminating all secondary feedback circuitry

Variable Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

Variable Bass Boost - With Variable Bass Boost you have the control of exactly how much BASS you want to pump out to your subwoofer(s)

Bridgeable - Dramatically increase the power output to you speakers and subwoofers by connecting two amplifier channels

Specs - Dimensions: 9. 5” x 10. 31” x 2. 25”, Weight: 6. 62 lbs.

- BOSS Audio Systems provides a powerful 6 year Platinum Online Dealer so long as the purchase is made through . We strongly encourage professional installation of this product to ensure proper and safe functionality

Boss Audio Systems R2000M Monoblock Car Amplifier - 2000 Watt Amp, 2/4 Ohm Stable, Class A/B, Mosfet Power Supply, Great For Car Subwoofers

BOSS AUDIO SYSTEMS
R2000M
15.50 X 10.40 X 2.30 Inches
7.80 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
DiscountsJungle 9.86

Features

Power - 2000 Watts Max x 1 @2-Ohms, 1000 Watts Max x 1 @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

Mosfet Power Supply - A MOSFET is basically an electrical switch that allows the flow of electrical current. It controls the output voltage & current precisely by removing the output current sensing loss & eliminating all secondary feedback circuitry

Variable Low Pass Crossover - Subwoofers reproduce sound based on a number of different low-range frequencies. You can set exact sound specifications for the bass frequency reproduction

Variable Bass Boost - Bass Boost allows you to adjust the low bass within the boost range to just the way you like it

Variable Gain Control - The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

Low & High Level Inputs - A low level (RCA) input is measured in voltages. A high level (+/- wire) input is measured in wattages. Both essentially carry signal from your receiver to your amplifier to your speakers

Specs - Dimensions: 11.5” x 10.44” x 2.25”, Weight 7.8 lbs.

Warranty - 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

#TOP18

Boss Audio Systems Ar1200.2 2 Channel Car Amplifier - 1200 Watts, Full Range, Class Ab, 2-4 Ohm Stable, Mosfet Power Supply, Bridgeable, Black, 1200 Watts

BOSS AUDIO SYSTEMS
AR1200.2
10.20 X 6.50 X 2.80 Inches
4.50 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
always quality 9.84

Features

POWER: 600 Watts Max x 2 @2-Ohms, 300 Watts Max x 2 @4-Ohms, 1200 Watts Max x 1 Bridged @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. Efficiency is the name of the game

VARIABLE BASS BOOST: With Variable Bass Boost you have the control of exactly how much BASS you want to pump out to your subwoofer(s)

MOSFET POWER SUPPLY: A MOSFET is basically 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 & eliminating all secondary feedback circuitry

VARIABLE GAIN CONTROL: The gain control is not for adjusting volume. It simply adjusts the amount of signal that is coming from your receiver and going to your amplifier

BRIDGEABLE: Dramatically increase the power output to you speakers and subwoofers by connecting two amplifier channels

OTHER SPECS: Dimensions - Depth 10.2” x Width 6.5” x Height 2.8”, Weight – 4.5 lbs.

WARRANTY: BOSS Audio provides a powerful 6 year Platinum Online Dealer Warranty so long as the purchase is made through Amazon.com

#TOP19

Sound Storm Laboratories Ev200.2 Evolution 200 Watt, 2 Channel, 2 To 8 Ohm Stable Class A/B, Full Range, Car Amplifier, Black

SOUND STORM LABORATORIES
EV200.2
5.00 X 9.00 X 1.80 Inches
2.30 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speece, Inc. 9.88

Features

100 W MAX Power @ 2 Ohm x 2 Channels

50 W MAX Power @ 4 Ohm x 2 Channels

Full-Range, Class A / B Topology

Crossover Switch, Fixed Low Pass Crossover

Variable input Gain Control

Dimensions: Depth 5” x Width 9” x Height 1.8”

6 Year Platinum Online Dealer Warranty

Sound Storm Labs Ev4.1600 Evolution 1600 Watt 4 Channel 2 To 8 Ohm Stable Class A B Full Range Bridgeable Mosfet Car Amplifier With Remote Subwoofer Control

SOUND STORM LABORATORIES
EV4.1600
13.50 X 10.00 X 2.30 Inches
8.80 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speece, Inc. 9.88

Features

400 W MAX Power @ 2 Ohm x 4 Channels

200 W MAX Power @ 4 Ohm x 4 Channels

800 W MAX Bridged Power @ 4 Ohm x 2 Channels

Full-Range, Class A / B Topology, MOSFET Power Supply

Low and High Level Inputs, Variable Low Pass Crossover, Variable High Pass Crossover

Variable Bass Boost, Variable Input Gain Control, Input Sensitivity Selector, Remote Subwoofer Control

Dimensions: Depth 13.5” x Width 10” x Height 2.3”

6 Year Platinum Online Dealer Warranty

#TOP21

Boss Audio Systems Mr800 Marine Grade 800 Watt, 2 Channel, 2 4 Ohm Stable Class Ab, Full Range, Bridgeable, Mosfet Power Supply Amplifier With Remote Subwoofer Control

BOSS AUDIO SYSTEMS
MR800
8.75 X 7.25 X 2.25 Inches
4.63 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speece, Inc. 9.88

Features

400 W MAX Power @ 2 Ohm x 2 Channels

200 W MAX Power @ 4 Ohm x 2 Channels

800 W MAX Bridged Power @ 4 Ohm x 1 Channels

RCA Low Level Inputs, High Level Inputs, Fixed High Pass Crossover, Variable Low Pass Crossover

Variable Bass Boost, Variable Input Gain Control, Input Sensitivity Selector, Remote Subwoofer Control

THD @ RMS Output: 0.01, Channel Separation: 90 dB, Signal To Noise Ratio: 102 dB, Frequency Response: 6 Hz – 50 kHz

Dimensions: Depth 8.8” x Width 7.3” x Height 2.3”

6 Year Platinum Online Dealer Warranty

#TOP22

Sound Storm Labsfr1000.2 Force 1000 Watt 2 Channel 2 To 8 Ohm Stable Class A B Full Range Bridgeable Mosfet Car Amplifier With Remote Subwoofer Control

SOUND STORM LABORATORIES
FR1000.2
1.00 X 9.70 X 2.30 Inches
4.41 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speedsounds 5.17

Features

500 W MAX Power @ 2 Ohm x 2 Channels

250 W MAX Power @ 4 Ohm x 2 Channels

1000 W MAX Bridged Power @ 4 Ohm x 1 Channel

Full-Range, Class A / B Topology, MOSFET Power Supply

Low and High Level Inputs, Variable Low Pass Crossover, Fixed High Pass Crossover

Switchable Bass Boost, Variable Input Gain Control, Input Sensitivity Selector, Remote Subwoofer Control

Dimensions: Depth 9.1” x Width 9.7” x Height 2.4”

6 Year Platinum Online Dealer Warranty

#TOP23
Best Timpanis

Timpano Tpt1000.4 Compact 4 Channel Car Audio Amplifier – 4 X 260 Watts At 2 Ohms – High Power Stereo 12 Volts Full Range Class D Amp Bridgeable

TIMPANO
TPT-1000.4
3.75 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
PRV Audio Group 9.59

Features

COMPACT DESIGN: Digital class D Brazilian technology allows this amplifier to have a small footprint by integrating a high-speed mosfet power supply with top of line transistors to ensure performance in a small heat sink without compromising performance. Dimensions: 8.11″ depth x 8.11″ width x 2.60″ height

POWER: This amplifier is designed to run your stereo system with the power it needs to perform! 1200 Watts maximum dynamic RMS power output of 4x 300 Watts at 2 Ohms per channel. Its high efficiency rate of 84% provides more power with less battery consumption.

BRIDGEABLE: Double the power output to your speakers by bridging two channels. Minimum impedance of 4 Ohms per bridged channel at output power of 2 x 520 Watts RMS

TECHNOLOGY: A smart electronic 2-way protection circuit protects the amp if it gets too hot or if speakers fail causing a short! Focusing in sound quality, a full range response of 20 to 26,000Hz was used to give the best sound reproduction on this tiny amplifier.

FEATURES: Fork terminal connector power and speaker wire Inputs. Built-in crossover filters for easy tuning! Choose between a fixed HPF at 90Hz or LPF at 90Hz or just turn it FLAT and use your external crossover or DSP settings. It also includes Variable Gain Control. Level controls are not for adjusting volume. They adjust the amount of signal that is coming into the amplifier from your signal source.

Top 10 variable gain amplifiers Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Boss Audio Systems 11
Sound Storm Laboratories 5
Rockford Fosgate 4
Planet Audio 1
Skar Audio 1
Timpano 1

Top 10 variable gain amplifiers Brands Pie Chart


We've carried out a comprehensive analysis of 37,564 reviews on variable gain amplifiers, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select variable gain amplifiers priced around $129.32, with top brands including crown, oiyagai and pyramid and boss audio systems

Our team of expert editors reviewed these high-quality items and handpicked the top 23 variable gain amplifiers for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include amazon.com and oiyagai and loveyourstereo (authorized dealer)✔ .

We are dedicated to assisting our users in finding the right amplifiers Products based on their needs, saving them considerable time when choosing which variable gain amplifiers to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.