Best 8 Variable Gain Amplifiers in 2026

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

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

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

Stereo/Parallel/Bridge-Mono Mode

User Selectable Input Sensitivity - 0.775V And 1.4V

Electronically Balanced Rca & Xlr Inputs; Binding Post And Speak On Outputs

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

A MUST HAVE | The UR 1 Gain Amplifier Subwoofer Volume Knob allows you to control your Subwoofer output channel from the driver's chair for when you need that quick adjustments without fussing with your Graphic Equalizer or Stereo Volume Controls!

RATED FIVE STARS | The UR 1 is a great control knob to have and a nice addition to your sound system. With its good build quality, the control knob is very precise, giving you unparalleled level of control on adjusting the bass for different types of music.

EASY SETUP | Works great, and it is very easy to mount on your car's console with no hardware to buy. Great for multi-sub setups in cars. Adjust the volume on the fly, and crank it up!

1000 WATT POWER: The Pyle Dual Channel Car Amplifier is perfect for your vehicle's sound system. Gives you up to 1000W bridgeable output. Features variable subwoofer crossover, variable gain control and high level low impedance MOLEX input connector

SILVER-PLATED RCA PORTS: The RCA ports are silver-plated for eliminating signal loss. The subsonic filter allows low-end interference to be cut so your speakers will always deliver the highest quality audio

DISTORTION-FREE: The MOSFET pulse width modulation power supply allows for a clean distortion-free signal to your compact speakers providing you w/ crisp and clear audio for an outstanding music experience

0.1-2000MHz RF Wide Band Amplifier

Power supply voltage: 9-12 VDC

High Gain Low Noise LNA Amplifier

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.

voltage: 9-12 VDC

Maximum power output+13dBm 20mW

1-Ohm Minimum Impedance Monoblock Operation | Multi-color RGB LED Illumination Accent Lighting | Solid Color, Flashing, Random, or Slow-Motion Color Change | MOSFET Power Supply with Audiophile Grade IR Transisitors

Direct Short, Thermal and Overload Circuits Protect Amplifier | 200mV-6V Low Level RCA Input and Pre-Amp Output | Variable 12dB Low Pass and Subsonic Crossovers | 12dB Bass Boost Increases Low Octave Harmonics

DataLink for Strapping Two Amps for Double Power | Dash Mount Gain Control Module Included | RMS Power Rating: 800W x 1 at 4-Ohm | 1,400W x 1 at 2-Ohm | 2,500W x 1 at 1-Ohm | 3,000W x 1 at .5-Ohm | 6,000W Max Power

1000W Max Class AB @ 2 Ohm, Stable at 2 Ohm and 4 Ohm with Bass Knob Included

S/N Ratio > 70 dB with and Input Sensitivity at 200mV-6V with Input IMP at 22k Ohms

HPF at 80 Hz ~ 1.2 kHz with LPF at 50 Hz ~ 250 Hz and Frequency Response at 10 Hz ~ 30 kHz

Power Handling: 1200W @ 1-Ohm, 1000W @ 2-Ohm, 650W @ 4-Ohm; includes power and protection LED

Remote sub level; bridgeable in/out that allows you to link two amplifiers together

Gain control with 0-12db bass Boost

Onboard chip LM386 Audio Amplifier Module. A circuit design with the advantages of a 20 multiplier. Chip: LM386 power amplifier for Arduino EK1236. PCB Board Size: 1.61 x 0.55inch(L*W), Material: Electric Part.

Car speaker wire clamp. Few peripheral devices; Low distortion; This plate is 200 times the default gain; Onboard horn socket;

Vehicle-mounted 10K variable resistance, adjustable volume. Components and total are widely used tape recorders and radios being.

EASY INSTALLATION: Signal booster amplifier is easy to install, made of good quality plastic, metal, and rubber material for high performance

AUTOMATIC GAIN ADJUSTMENT: Built in gain automatic adjustment function, eliminating manual adjustment, easy and convenient to use

VARIABLE LEVEL CONTROL: Video input level is 2.0Vpp, video output level from 0.5‑1.5Vpp, video output impedance for 70ohms, working voltage is 12V DC