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75W x 4 @ 4Ω

Amplifiers with a Power Output Rating of 75-Watts x 4-Channels, 4-Ohm Final Impedance

Amplifiers with a Power Output Rating of 75-Watts x 4-Channels, 4-Ohm Final Impedance

RMS power: This rating of any amplifier is the continuous power rating that an amp is designed to output at a maximum continued volume rating. The RMS power specification is one of two numbers to go by when pairing your speakers with an amplifier, not the only 2 but a good starting point. As an example, a speaker driver with a 75-Watt, or 75W for short, RMS rating should be paired with a seventy-five-watt RMS amplifier. We usually recommend an amp to be over powered by 10% RMS so that the power-plant does not have to work at 100% capacity to get 100-percent efficiency from your speakers. This will keep your amplifier from overheating during long periods of continuous operation.

Ohms: Is the resistance rating of an amp and is the second most important when pairing drivers with amplifiers. A power-plant that is 75W @ 4-ohm might put out 150-Watts @ 2Ω. When purchasing an amplifier, the correct pairing of a speaker’s RMS wattage and Ohm ratings with an amp’s output power rating is absolutely essential.

6 products

  • Alpine KTA-30FW : 4ch x 75W RMS @ 2Ω/4Ω Amplifier Alpine KTA-30FW : 4ch x 75W RMS @ 2Ω/4Ω Amplifier, top view.

    Alpine KTA-30FW : 4ch x 75W RMS @ 2Ω/4Ω Amplifier

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    The KTA-F30W is perfect for when you want to boost your sound system but don’t have the space for a large amplifier. It is compatible with an aftermarket or factory head unit and adds up to 4 times the power over the head unit's original built-in power. The KTA-30FW features Alpine’s exclusive Dynamic Peak Power (DPP) technology which uses a new dynamic power supply design that delivers bursts of power during rigorous musical passages. When the amplifier senses that more power is required, the power supply quickly increases the internal gain level, effectively doubling the power for a significant increase in dynamic range at high music volumes. Specifications Alpine's Class D amplifier circuit w/ Dynamic Peak Power (DPP) 75W RMS x 4 @ 2Ω/4Ω, 14.4V, ≤ 1% THD+N 150W DPP x 4 @ 2Ω/4Ω, 14.4V, ≤ 1% THD+N >85dB S/N (ref. 1W into 4Ω) >0.1% THD (ref. 1W into 4Ω) 20-20kHz Frequency response (+/-1dB) Weather resistant (IP66 rating) OEM-grade connector wire harness Speaker/RCA inputs (selectable, High range=0.5-10V, Low range=0.2-4V) Sound control: Crossovers – Off/HP/LP, Fc=50-400Hz @ -12dB/Oct. (variable); Input gain settings (variable); 2ch/4ch input (selectable) Alpine KTA-30FW Manual

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    $419.99

  • JL Audio JD400/4 : 100W or 75W 4ch Amplifier @ 2Ω or 4Ω JL Audio JD400/4 : 100W or 75W 4ch Amplifier @ 2Ω or 4Ω, top side.

    JL Audio JD400/4 : 100W or 75W 4ch Amplifier @ 2Ω or 4Ω

    4 Available for pickup

    JD-Series 75-Watt x 4-Channel Class-D Full-Range Amplifier Utilizing JL Audio's exclusive NexD™ high-speed switching technologies, the JD400/4 amplifier is engineered to deliver loads of clean power, with excellent efficiency and low distortion. This little guy churns out 100 watts of audio from each of its four channels into 2 ohms (14.4V, 1% THD) and is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a whopping 200W x 2 into 4 ohms. The JD400/4’s controls can be found on the input panel of the amplifier, with all speaker and power connections located along the opposite end of the extruded aluminum chassis. Signal processing features include high or low-pass 12 dB / octave filters (defeatable) for each channel pair, with continuously variable frequency selection from 50-500 Hz, and dual-range, differential-balanced inputs capable of accepting line-level or speaker-level signals. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard equipment. Onboard LED-clipping indicators are also included surrounding each input sensitivity control. This convenient feature lets you set your amplifier’s input sensitivity, quickly and accurately, without special equipment. You will also find a set of buffered, pass-through preamp outputs on-board, so you can pass signals to another amplifier. General Specifications @ 4 Ω 75 W RMS x 4 @ 2 Ω 100 W RMS x 4 Bridged @ 4Ω 200 W RMS x 2 Frequency Response 12 Hz - 22 kHz (+0, -1dB) S/N Ratio, referred to highest rated power >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >150 / 50 Hz Damping Factor @ 2 Ω >75 / 50 Hz THD+N @ Rated Power <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High) Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 40 A (AFS, AGU or MaxiFuse™) Filter Mode(s) Low-Pass or High-Pass Filter Slope(s) 12 dB/octave Filter Frequency Range 50 Hz - 500 Hz Detented, Calibrated Filter Freq. Potentiometers No Filter Defeat Function Yes Remote Level Control No Remote Level Modes N/A Channel Input Mode Switch Yes (2/4 ch.) Pass-Through Preamp Output Buffered Source Channel Selection for PreOuts No (always 2 Ch) JL Audio JD400/4 Manual

    4 Available for pickup

    $279.99

  • Last One! JL Audio M400/4 : 4ch Marine Amplifier, 4ch x 100W or 75W RMS @ 2Ω or 4Ω JL Audio M400/4 : 4ch Marine Amplifier, top side.

    JL Audio M400/4 : 4ch Marine Amplifier, 4ch x 100W or 75W RMS @ 2Ω or 4Ω - Discontinued

    1 Available for pickup

    M-Series 4-Channel Class-D Full-Range Marine-Grade Amplifier, 75-Watts x 4-Channel @ 4-Ohm This tiny amplifier packs a serious full-range punch, delivering a staggering 100W to each of its four channels into 2Ω (14.4V, 1% THD). The breakthrough that makes this much power possible in such a small chassis is JL's NexD™ ultra-high-speed switching design, which allows for full bandwidth Class D operation with extremely low distortion and outstanding efficiency. Use the M400/4 in combination with JL's M600/1 monoblock to build a 1000W amplification system to power four satellites and a subwoofer... and fit the whole thing under a seat. Or, use the M400/4 by itself to power two satellites, plus a subwoofer. With M-Series amplifier, the possibilities are endless. The M400/4 includes a 12dB / octave filter for each channel bank, which can be configured as a low-pass or high-pass filter and offers continuously variable cutoff frequency selection from 50-500Hz. With the addition of an HD-RLC remote level control (sold separately), the amplifier's Ch. 1 & 2 level or overall level can be directly controlled from a remote location. This marine amplifier features white and gray powder-coat finishes, a gasketed cover for the controls and stainless steel hardware for durability in the marine environment. Specifications @ 4 Ω 75 W RMS x 4 @ 2 Ω 100 W RMS x 4 Bridged @ 4Ω 200 W RMS x 2 Frequency Response 12 Hz - 22 kHz (+0, -1dB) S/N Ratio, referred to highest rated power >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >150 / 50 Hz Damping Factor @ 2 Ω >75 / 50 Hz THD+N @ Rated Power <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs 100 mV - 4 V RMS Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 40 A (AFS, AGU or MaxiFuse™) Filter Mode(s) Low-Pass or High-Pass Filter Slope(s) 12 dB/octave Filter Frequency Range 50 Hz - 500 Hz Detented, Calibrated Filter Freq. Potentiometers Yes Filter Defeat Function Yes Remote Level Control Optional (HD-RLC) Remote Level Modes 2 or All channels Channel Input Mode Switch Yes (2/4 ch.) Pass-Through Preamp Output Buffered Source Channel Selection for PreOuts Yes JL Audio M400/4 Manual

    1 Available for pickup

    $649.99

  • JL Audio RD400/4 : 75W x 4ch Amplifier @ 4Ω JL Audio RD400/4 : 75W x 4ch Amplifier, top side.

    JL Audio RD400/4 : 75W x 4ch Amplifier @ 4Ω

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    RD-Series 75-Watts x 4-Channel Automotive Amplifier @ 4-Ohms Utilizing JL Audio's exclusive NexD™ high-speed switching technologies, the ultra-compact RD400/4 amplifier is engineered to deliver loads of audio output power, with incredible efficiency and low distortion. Don’t let its modern styling and small size fool you though, this little powerhouse churns out 100 watts of crystal-clear audio from each of its four channels into 2 ohms (14.4V, 1% THD) and is fully bridgeable, so it can be used as a 3-channel amplifier, or as a 2-channel amplifier producing a whopping 200W x 2 into 4 ohms. For your convenience, the RD400/4’s controls can be found on top of the amplifier, beneath a protective cover, with all connections located along one side of its chassis. Studio-grade signal processing features include high or low-pass 12 dB / octave filters (defeatable) for each channel pair, with continuously variable frequency selection from 50-500 Hz, and dual-range, differential-balanced inputs capable of accepting most input voltage levels. Automatic turn-on capability (via signal sensing or DC-offset sensing) is standard equipment, along with all-new input type switches for bridging of stereo output channels without needing to use Y-adaptors. Onboard LED-clipping indicators are also included with your RD400/4. This all-new, innovative feature lets you easily set your amplifier’s input sensitivity settings, quickly and accurately, with no special equipment needed. You’ll also find a set of preamp outputs on-hand, so you can pass signals to another amplifier, almost effortlessly. The RD400/4 features a durable, black powder-coated finish and a top-mounted, dual-color LED light strip that reports the overall status and condition. Specifications Frequency Response 12 Hz - 22 kHz (+0, -1dB) S/N Ratio, referred to highest rated power >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >150 / 50 Hz Damping Factor @ 2 Ω >75 / 50 Hz THD+N @ Rated Power <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs Switchable from 200 mV - 2 V RMS (Low) to 800 mV - 8 V RMS (High) Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 40 A (AFS, AGU or MaxiFuse™) @ 4 Ω 75 W RMS x 4 @ 2 Ω 100 W RMS x 4 Bridged @ 4Ω 200 W RMS x 2 JL Audio RD400/4 Manual

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    $379.99

  • JL Audio VX400/4i : 4ch Digital Amplifier with DSP, 100W or 75W @ 2Ω or 4Ω JL Audio VX400/4i : 4ch Digital Amplifier with DSP, top.

    JL Audio VX400/4i : 4ch Digital Amplifier with DSP, 100W or 75W @ 2Ω or 4Ω

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    4-Channel Class-D Full-Range Amplifier with Integrated DSP, 100-Watt x 4 @2-Ohm / 75-Watt x 4 @ 4-Ohm Designed to simplify great audio, every VXi amplifier combines JL's advanced NexD2™ switching amplifier technology with an integrated, full-featured digital signal processor. With JL's second-generation NexD2™ technology, the VX400/4i full-range amplifier outputs up to 75 watts per channel into 4 ohms, or 100 watts into 2 ohms. It can also be bridged into 4 ohms, producing up to 200 W x 2. The NexD2™ full-range technology in this amplifier is DSP-controlled and features a reduced loop area design utilizing DirectFET™ outputs for outstanding fidelity, very low noise and exceptional efficiency. The amplifier chassis is ultra-compact, with all connections on one side, to greatly simplify installation into tight spaces. Instead of traditional control knobs and switches, all amplifier adjustments and DSP functionality are configured via a compatible external device (PC, Tablet or Smartphone), with the appropriate JL Audio TüN™ Software application installed. Amplifier includes: Power Connector (for 4 AWG wire), Analog Input/Pre-Out Harness, Speaker Output Harness, 6 ft A/B USB Cable TüN™ Software Applications Intuitive setup and tuning, all at your fingertips. Automatically recognizes connected amplifier and displays appropriate interface. TüN™ is available for download for free in a variety of applications, for computers and most handheld devices. Unprecedented, Onboard DSP Tuning Power Premium, triple-core AKM® DSP with an optimized configuration, developed in collaboration with AKM® Hi-Res audio processing at 24 bit/96 kHz High-performance AKM® A/D and D/A converters 10 Bands of fully parametric EQ, per output channel, including pre-outs Shelving EQ option for Band 1 and Band 10 High-Pass & Low-Pass Filters for each output channel, with selectable alignments and slopes: Linkwitz-Riley: 12, 24, 48 dB/octaveButterworth: 6, 12, 18, 24, 36, 48 dB/octave Signal Delay in 0.01 millisecond steps (equivalent to 1/8-inch, 3 mm) All-Pass Filter (Phase EQ), with variable "Q" and corner frequency Polarity Reversal (0 or 180 deg.) Output Level Trim in 0.1 dB steps NexD2™ Switching Amplifier Technology JL's latest generation of high-speed switching technology delivers superb low frequency power and efficiency. Specially optimized for subwoofer applications Ultra-Versatile Analog and Digital Inputs High-performance, differential-balanced analog inputs for outstanding noise rejection Accepts speaker level signals from 200 mV, up to 16V RMS, including those from many factory systems Optical Digital (Toslink) input permits direct connection of S/PDIF digital sources, bypassing A/D converter. Accepts up to 24 bit/192 kHz input. Independently configurable RCA analog and digital pre-outs (24 bit/96 kHz) Automatic turn-on options via Signal-Sensing or DC-Offset sensing Functional Compact Chassis Design Solid cast alloy main unibody and bottom plate deliver superb EMI performance and shielding All connections utilize compact mating connectors for maximum integrity and fitment into tight spaces. Configurable LED logo ring displays status and can display audio preset color code or user-defined color Logo badge can be oriented in 90 degree increments Corner caps engineered to conceal mounting holes and hardware JLid™ System Command and Control with Networking Capabilities JL Audio's digital protocol provides control interface and communication between VXi amplifiers and optional JLid™ accessories, including: DRC-100/DRC-200/DRC-205 Digital Remote Controllers: Offers convenient level and DSP preset control from the driver's seat. VXi-BTC Bluetooth® Communicator: Permits wireless configuration of VXi amplifiers using your compatible Apple® or Android® device. VXi-HUB Optical Network Hub: Provides network connectivity for up to five slave VXi amplifiers, allowing synchronization of DRC controllers and DSP presets. Up to two VXi-HUBs can be daisy-chained to network up to ten VXi amplifiers. Specifications Frequency Response 12 Hz - 24 kHz (+0, -1dB) S/N Ratio, referred to highest rated power(Analog Inputs) 99 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W(Analog Inputs) 80 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to highest rated power(Digital Inputs) 101 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W(Digital Inputs) 81 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >100 / 50 Hz Damping Factor @ 2 Ω >50 / 50 Hz THD+N @ Rated Power <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs 200 mV - 16 V RMS Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 40 A (AFS, AGU or MaxiFuse™) @ 4 Ω 75 W RMS x 4 @ 2 Ω 100 W RMS x 4 Bridged @ 4Ω 200 W RMS x 2 JL Audio VX400/4i Manual

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    $1,199.99

  • JL Audio XDM400/4 : 4ch Marine Amplifier, 100W/75W x 4ch @ 2Ω/4Ω. JL Audio XDM400/4 : 4ch Marine Amplifier, settings section.

    JL Audio XDM400/4 : 4ch Marine Amplifier, 100W/75W x 4ch @ 2Ω/4Ω

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    XDM-Series Four-Channel Class-D Marine-Grade Amplifier, 100-Watts x Four-Channels @ 2-Ohm or 75-Watts x 4-Channels @ Four-Ohm The ultra-compact XDM400/4 packs a serious full-range punch, generating a whopping 100-watts to each of its four channels into 2-ohms (14.4V, 1% THD). The technology that makes this much power possible in such a compact chassis is our advanced NexD high-speed switching design, which permits full bandwidth Class-D operation with extremely low distortion and remarkable efficiency. Suitable for car or boat installations, the XDM400/4 is built with marine-grade materials and features an exclusive, dual-mode input filter for noise-free performance in boats or cars. Automatic turn-on capability (via signal sensing or DC-offset sensing) is also onboard for easy factory system upgrades. Combine the XDM400/4 with our XDM600/1 monoblock to build a stunning 1000W amplification system to power four satellites and a subwoofer... and fit the whole thing under a seat or deck. Or, use the XDM400/4 by itself to power two satellites, plus a subwoofer.  The XDM400/4 includes a 12dB / octave filter for each channel bank, which can be configured as a low-pass or high-pass filter and offers continuously variable cutoff frequency selection from 50-500Hz. With the addition of an optional HD-RLC or MHD-RLC (water-resistant) remote level controller (each sold separately), you have the ability to adjust the level of all amplifier channels or just the rear channels directly from the driver's seat or cockpit. Finished in a sleek, black powder-coat, all controls are protected beneath a gasketed, removable top cover for easy access. Specifications @ 4 Ω 75 W RMS x 4 @ 14.4V @ 2 Ω 100 W RMS x 4 @ 14.4V Bridged @ 4Ω 200 W RMS x 2 @ 14.4V @ 4 Ω 60 W RMS x 4 @ 12.5V @ 2 Ω 90 W RMS x 4 @ 12.5V Bridged @ 4Ω 180 W RMS x 2 @ 12.5V Frequency Response 12 Hz - 22 kHz (+0, -1dB) S/N Ratio, referred to highest rated power >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) S/N Ratio, referred to 1 W >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) Damping Factor @ 4 Ω >150 / 50 Hz Damping Factor @ 2 Ω >75 / 50 Hz THD+N @ Rated Power <1% @ 2 Ω per Ch. Input Voltage Range @ RCA Inputs 200 mV - 4 V RMS Min.Copper Power / Ground Wire Gauge 4 AWG wire Fuse Rating 40 A (AFS, AGU or MaxiFuse™) Filter Mode(s) Low-Pass or High-Pass Filter Slope(s) 12 dB/octave Filter Frequency Range 50 Hz - 500 Hz Detented, Calibrated Filter Freq. Potentiometers Yes Filter Defeat Function Yes Remote Level Control Optional HD-RLC or MHD-RLC (water-resistant) Remote Level Modes 2 or All channels Channel Input Mode Switch Yes (2/4 ch.) Pass-Through Preamp Output Buffered Source Channel Selection for PreOuts Yes Filter Mode(s) Low-Pass or High-Pass Filter Slope(s) 12 dB/octave Filter Frequency Range 50 Hz - 500 Hz Detented, Calibrated Filter Freq. Potentiometers Yes Filter Defeat Function Yes Remote Level Control Optional HD-RLC or MHD-RLC (water-resistant) Remote Level Modes 2 or All channels Channel Input Mode Switch Yes (2/4 ch.) Pass-Through Preamp Output Buffered Source Channel Selection for PreOuts Yes JL Audio XDM400/4v2 Manual

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    $649.99

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