Best 8 Variable Gain Amplifiers in 2026
Daisy
Last Updated: Feb 7, 2026
Daisy
Last Updated: Feb 7, 2026
* 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.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Speece, Inc. | 9.88 | ✅ | ✅ | ✅ |
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
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| DiscountsJungle | 9.86 | ✅ | ✅ | ✅ |
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
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| loveyourstereo (Authorized Dealer)✔ | 6.45 | ❌ | ❌ | ❌ |
POWER: 1500 Watts Max x 1 @2-Ohms, 750 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 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
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 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: The BE1500. 1 is 10 inches in Depth, 7 inches in Width and 2. 3 inches in Height. It weighs 4. 5 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
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Speece, Inc. | 9.88 | ✅ | ✅ | ✅ |
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
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Speedsounds | 5.17 | ❌ | ❌ | ❌ |
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
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Speece, Inc. | 9.88 | ✅ | ✅ | ✅ |
Power - 400 Watts Max x 4 @2-Ohms, 200 Watts Max x 4 @4-Ohms, 800 Watts Max x 2 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
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)
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
Bridgeable - Dramatically increase the power output to you speakers and subwoofers by connecting two amplifier channels
Specs - Dimensions: 13.7” x 6.5” x 2.5”, Weight: 6.1 lbs.
Warranty - Sound Storm Laboratories 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
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
Class-D Mono-block Subwoofer Amplifier, 1200 Watts Max Power, RMS 600 Watts x 1@2Ohm; RMS 350 Watts x 1@4Ohm.
Featuring a high-speed MOSFET power supply, premium grade internal components, as well as 4-way protection circuitry, the amplifier will safely operate at the highest levels of performance for hours on end. Highly efficient heatsinks keep the amplifier cool with a sophisticated new look.
Recoil mono amplifiers come with bass remote control. Use it to customize your bass on the fly with just a turn of a knob.
You'll have full reign over your amplifier with the built-in user control panel, featuring a bass EQ, and variable adjustment tunings for gain level, low-pass filter, and subsonic filter.
Dimensions: 7.48" x 5.90" x 1.77"
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Boss Audio Systems | 4 |
| Sound Storm Laboratories | 2 |
| Recoil | 1 |
We've carried out a comprehensive analysis of 3,761 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 $91.06, 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 7 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.
PickSmartly is dedicated to creating a platform designed to streamline your shopping experience, empowering you to make well-informed purchasing decisions with minimal time and effort. At the heart of our mission is the commitment to earning and maintaining the trust of our users, as we believe this to be fundamental to the services we provide.
When you engage with our websites, services, or tools, we or our approved service providers may utilize cookies to store information. This is done to enhance your user experience by making it more efficient, secure, and tailored to your preferences, as well as for marketing objectives.
We are an Amazon Associate and earn commissions from qualifying purchases. Our participation in the Amazon Services LLC Associates Program, an affiliate advertising initiative, provides us with a means to generate income through links to Amazon.com and its affiliated websites. Please note that Amazon, Amazon Prime, their logos, and the Amazon Prime logo are registered trademarks of Amazon.com, Inc., or its associated companies.
