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Infinity K5 Amplifier with Clari-fi Technology (Open Box)

2300W Peak (750W RMS) High Performance Kappa Series Class-D 5-Channel 2-Ohm Stable Amplifier with Bluetooth and Clari-Fi Technology

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2300W Peak (750W RMS) High Performance Kappa Series Class-D 5-Channel 2-Ohm Stable Amplifier with Bluetooth and Clari-Fi Technology

• Item Condition: Like New Open Box
• 75 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS x 2 @ 4 ohm Bridged
• Subwoofer Channel: 4 ohm: 200 watts x 1 chan.
• 2 ohm: 350 watts x 1 chan.
• Total Peak Power: 1500 Watts
• Bluetooth Streaming
• Clari-fi Technology
• Wired control panel
• Speaker-level (high-level) inputs

• Item Condition: Like New Open Box
• 75 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS x 2 @ 4 ohm Bridged
• Subwoofer Channel: 4 ohm: 200 watts x 1 chan.
• 2 ohm: 350 watts x 1 chan.
• Total Peak Power: 1500 Watts
• Bluetooth Streaming
• Clari-fi Technology
• Wired control panel
• Speaker-level (high-level) inputs

Soundstream PCX1500D (PCX-1500D) R/B

1500W RMS, Class D Monoblock Picasso Series Amplifier

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1500W RMS, Class D Monoblock Picasso Series Amplifier

Picasso Series Monoblock Class D Car Amplifier • 800W x 1 chan. @ 4 ohm • 1500W RMS • Twin Stack Technology • Anodized heatsink • Variable low-pass filter • Subsonic filter

Picasso Series Monoblock Class D Car Amplifier • 800W x 1 chan. @ 4 ohm • 1500W RMS • Twin Stack Technology • Anodized heatsink • Variable low-pass filter • Subsonic filter

NVX - Worth the Envy - Direct to Consumer Car Audio

MB Quart OA1550.1D OPEN BOX COMPLETE

1500W Mono Block Onyx Series Class D Amplifier

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1500W Mono Block Onyx Series Class D Amplifier

• RMS: 475W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
• Total Peak Power: 1000W
• Fluid-Fets MOSFET Power Supply
• Q-Stasis Pre-Amplifier Stage
• Heavy Duty Aluminum Alloy Heat-Sink
• Dimensions: 9.50"W x 14.41"L x 2.34"H

• RMS: 475W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
• Total Peak Power: 1000W
• Fluid-Fets MOSFET Power Supply
• Q-Stasis Pre-Amplifier Stage
• Heavy Duty Aluminum Alloy Heat-Sink
• Dimensions: 9.50"W x 14.41"L x 2.34"H

Kenwood KAC-9103D R/B

1800W Max, Class D Monoblock Amplifier

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1800W Max, Class D Monoblock Amplifier

1800W Class-D Monoblock Amplifier • 500W RMS x 1 @ 4 ohm • 900W RMS x 1 @ 2 ohm • Variable Low-Pass and Subsonic Filter • High and Low Level Inputs • 1 Pair RCA Outputs • 0 - 18 dB Bass Boost

1800W Class-D Monoblock Amplifier • 500W RMS x 1 @ 4 ohm • 900W RMS x 1 @ 2 ohm • Variable Low-Pass and Subsonic Filter • High and Low Level Inputs • 1 Pair RCA Outputs • 0 - 18 dB Bass Boost

MB Quart RA1000.1 OPEN BOX COMPLETE

1000W Class D 1-Channel Monoblock Reference Series Amplifier

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1000W Class D 1-Channel Monoblock Reference Series Amplifier

Item is used and has been installed
• Peak: 475W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
• Total Peak Power: 1000W
• Built-In System Diagnostics
• Variable Bass EQ: 0 to +10 dB at 45 Hz
• Class D Circuitry
• Dimensions: 8-5/16"W x 15-1/2"D x 2-3/8"H

Item is used and has been installed
• Peak: 475W x 1 @ 4 ohm, 750W x 1 @ 2 ohm, 1000W x 1 @ 1 ohm
• Total Peak Power: 1000W
• Built-In System Diagnostics
• Variable Bass EQ: 0 to +10 dB at 45 Hz
• Class D Circuitry
• Dimensions: 8-5/16"W x 15-1/2"D x 2-3/8"H

Hifonics Titan TX8805 R/B

440W RMS Titan Series 4-Channel Amplifier

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440W RMS Titan Series 4-Channel Amplifier

Titan Series 4 Channel Amplifier • 110 watts x 4 chan @ 4 ohm • 220 watts x 4 chan @ 2 ohm • Bass Remote Control Port • Power and Protection LEDs • 18dB Bass Boost • Variable Input Sensitivity

Titan Series 4 Channel Amplifier • 110 watts x 4 chan @ 4 ohm • 220 watts x 4 chan @ 2 ohm • Bass Remote Control Port • Power and Protection LEDs • 18dB Bass Boost • Variable Input Sensitivity

Massive Audio BL3 Open Box (Complete)

2800W Max Marine and Powersports Nano BLU Series 1 ohm Stable Monoblock Class-D Amplifier

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2800W Max Marine and Powersports Nano BLU Series 1 ohm Stable Monoblock Class-D Amplifier

• 450 Watts RMS x 1 @ 4 ohm
• 700 Watts RMS x 1 @ 2 ohm
• 1400 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 2800 Watts
• CEA-2006 Compliant
• Built for Powersports and Marine Applications
• HEATSINK
• Dimensions: 11.5" W x 4.25" L x 1.6" H

• 450 Watts RMS x 1 @ 4 ohm
• 700 Watts RMS x 1 @ 2 ohm
• 1400 Watts RMS x 1 @ 1 ohm
• Total Peak Power: 2800 Watts
• CEA-2006 Compliant
• Built for Powersports and Marine Applications
• HEATSINK
• Dimensions: 11.5" W x 4.25" L x 1.6" H

JL Audio ZR100-CT (Open Box Complete)

225W 1.0" Evolution ZR Series Component Aluminum Dome Tweeters

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225W 1.0" Evolution ZR Series Component Aluminum Dome Tweeters

• Peak Power: 225W per channel
• RMS Power: 85W per channel
• Soft rubber suspension
• Neodymium magnet
• Ferrofluid cooled and damped
•Includes a 12dB/Octave inline filter
• Variable mounting system
• 8 ohm

• Peak Power: 225W per channel
• RMS Power: 85W per channel
• Soft rubber suspension
• Neodymium magnet
• Ferrofluid cooled and damped
•Includes a 12dB/Octave inline filter
• Variable mounting system
• 8 ohm

Pioneer GM-D9500F Open Box

(Open Box) 800W Max, Class FD 4-Channel Amplifier (Full-Range Class D)

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(Open Box) 800W Max, Class FD 4-Channel Amplifier (Full-Range Class D)

FD Series Class D 4-Channel Car Amplifier • 75W x 4 Chan. @ 4 Ohm • 100W x 4 Chan. @ 2 Ohm • 800W Max • 4/3/2 Channel Operation • Speaker-Level Inputs • Compression-Type Terminals • LPF • HPF

FD Series Class D 4-Channel Car Amplifier • 75W x 4 Chan. @ 4 Ohm • 100W x 4 Chan. @ 2 Ohm • 800W Max • 4/3/2 Channel Operation • Speaker-Level Inputs • Compression-Type Terminals • LPF • HPF

Soundstream TRX2000D (TRX-2000D) R/B

2000W RMS, Monoblock Tarantula Series Amplifier

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2000W RMS, Monoblock Tarantula Series Amplifier

Tarantula Series Monoblock Class D Car Amplifier • 1100W x 1 chan. @ 4 ohm • 2000W Max • Twin Stack Technology • Three-way protection circuitry • Pre-amp outputs • Variable low-pass filter

Tarantula Series Monoblock Class D Car Amplifier • 1100W x 1 chan. @ 4 ohm • 2000W Max • Twin Stack Technology • Three-way protection circuitry • Pre-amp outputs • Variable low-pass filter

Soundstream TRX700D R/B

700W RMSTarantula Series Class D Monoblock Amplifier

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700W RMSTarantula Series Class D Monoblock Amplifier

Soundstream Tarantula Series Monoblock Amp • 350W x 1-Chan. @ 4 Ohm • 520W x 1-Chan. @ 2 Ohm • MOSFET Power Supply • Twin Stack Technology • Variable Bass Boost • Bass Boost Remote • CEA-2006 Compliant

Soundstream Tarantula Series Monoblock Amp • 350W x 1-Chan. @ 4 Ohm • 520W x 1-Chan. @ 2 Ohm • MOSFET Power Supply • Twin Stack Technology • Variable Bass Boost • Bass Boost Remote • CEA-2006 Compliant

MTX Audio MUD100.4 (Open Box)

800W Peak (400W RMS) 4-Channel Bridgeable Ultra-Compact Class D Power Sports Amplifier for Install In Car, Off-Road, SSV and more...

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800W Peak (400W RMS) 4-Channel Bridgeable Ultra-Compact Class D Power Sports Amplifier for Install In Car, Off-Road, SSV and more...

• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 800 Watts
• Selectable Front high-pass filter: 80 / 200 Hz
• Speaker-level (high-level) inputs

• 50 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• Total Peak Power: 800 Watts
• Selectable Front high-pass filter: 80 / 200 Hz
• Speaker-level (high-level) inputs

Crunch PZ2400.2 (Factory Refurbished)

2400W Max PowerZone Series 2-Channel Car Audio Amplifier

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2400W Max PowerZone Series 2-Channel Car Audio Amplifier

• 2400 Watts Max
• 1200 Watts x 2 Chan. @ 2 Ohm
• 4-Way System Protection
• Selectable Highpass/Lowpass Filters

• 2400 Watts Max
• 1200 Watts x 2 Chan. @ 2 Ohm
• 4-Way System Protection
• Selectable Highpass/Lowpass Filters

MB Quart ONX1.2000D (Factory Refurbished)

2000W ONYX Series Class D Monoblock Amplifier

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2000W ONYX Series Class D Monoblock Amplifier

• Peak: 650W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total Peak Power: 2000W
• Wired Bass Remote Included
• Bass Boost: 0-10 dB
• 1 Pair of Preamp Outputs
• Dimensions: 14-7/8"L x 9"W x 2-1/2"H

• Peak: 650W x 1 @ 4 ohm, 1300W x 1 @ 2 ohm, 2000W x 1 @ 1 ohm
• Total Peak Power: 2000W
• Wired Bass Remote Included
• Bass Boost: 0-10 dB
• 1 Pair of Preamp Outputs
• Dimensions: 14-7/8"L x 9"W x 2-1/2"H

JBL MS-A5001 OPEN BOX COMPLETE

Tested at 750W RMS on our Amp Dyno! (Rated 500W RMS by JBL), 1-Channel Monoblock Class D Car Amplifier with Digital Input Mixer and Graphical Status Display

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Tested at 750W RMS on our Amp Dyno! (Rated 500W RMS by JBL), 1-Channel Monoblock Class D Car Amplifier with Digital Input Mixer and Graphical Status Display

Signs of installation
• RMS: 500 x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• DSP (Digital Signal Processing)
• Sophisticated Crossover Functions and Selectable Crossover Slopes
• Dimensions: 8-13/16"L x 7-1/4"W x 2-13/16"H

Signs of installation
• RMS: 500 x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total RMS Power: 500W
• CEA-2006 Compliant
• DSP (Digital Signal Processing)
• Sophisticated Crossover Functions and Selectable Crossover Slopes
• Dimensions: 8-13/16"L x 7-1/4"W x 2-13/16"H

Autotek MM4050.1- OPEN BOX

4000W Mean Machine Series Monoblock Amplifier

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4000W Mean Machine Series Monoblock Amplifier

• RMS Power: 1000W x 1 @ 4 ohm, 2000W x 1 @ 2 ohm, 4000W x 1 @ 1 ohm
• Total Peak Power: 4000W
• Fully Adjustable Pro-Design Crossovers
• Dimensions: 9.72" W x 12.6" L x 2.28" H

• RMS Power: 1000W x 1 @ 4 ohm, 2000W x 1 @ 2 ohm, 4000W x 1 @ 1 ohm
• Total Peak Power: 4000W
• Fully Adjustable Pro-Design Crossovers
• Dimensions: 9.72" W x 12.6" L x 2.28" H

Hifonics BXi 1210D Open Box

(Open Box) 1200W RMS, Brutus BXi Series Class D Monoblock Amplifier (BXi1210D)

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(Open Box) 1200W RMS, Brutus BXi Series Class D Monoblock Amplifier (BXi1210D)

1200W RMS, Brutus BXi Series Class D Monoblock Amplifier • 450W x 1 Chan. @ 4 Ohm • 900W x 1 Chan. @ 2 Ohm • 1200W x 1 Chan. @ 1 Ohm • Super D-Class • Tuned Bass EQ • 1 Ohm Stable • Balanced Line Input

1200W RMS, Brutus BXi Series Class D Monoblock Amplifier • 450W x 1 Chan. @ 4 Ohm • 900W x 1 Chan. @ 2 Ohm • 1200W x 1 Chan. @ 1 Ohm • Super D-Class • Tuned Bass EQ • 1 Ohm Stable • Balanced Line Input

Eclipse XA1200 Open Box

600W Max, XA Series Class D Monoblock Car Amplifier (XA-1200)

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600W Max, XA Series Class D Monoblock Car Amplifier (XA-1200)

XA Series Class D Monoblock Car Amplifier • 350 Watts x 1 Chan. @ 4 Ohm • 500 Watts x 1 Chan. @ 2 Ohm • 600 Watts • Variable Low-Pass Filter • ICEpower Design • CEA-2006 Compliant • LED Power Indicators

XA Series Class D Monoblock Car Amplifier • 350 Watts x 1 Chan. @ 4 Ohm • 500 Watts x 1 Chan. @ 2 Ohm • 600 Watts • Variable Low-Pass Filter • ICEpower Design • CEA-2006 Compliant • LED Power Indicators

Alpine MRV-M500-OPEN BOX

500W V-Power Series Class D Monoblock Digital Amplifier

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500W V-Power Series Class D Monoblock Digital Amplifier

• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total Peak Power: 500W
• CEA-2006 Compliant Amplifier
• 4-Channel Speaker-Level Inputs
• Heavy Duty Aluminum Alloy Heat-Sink
• Dimensions: 7-7/8"W x 7-7/8"L x 2-3/16"H

• RMS: 300W x 1 @ 4 ohm, 500W x 1 @ 2 ohm
• Total Peak Power: 500W
• CEA-2006 Compliant Amplifier
• 4-Channel Speaker-Level Inputs
• Heavy Duty Aluminum Alloy Heat-Sink
• Dimensions: 7-7/8"W x 7-7/8"L x 2-3/16"H

NVX JAD800.4 Open Box

True 800W RMS, Full Range Class D 4-Channel Amplifier (JAD-800.4)

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True 800W RMS, Full Range Class D 4-Channel Amplifier (JAD-800.4)

• Class D 4-Channel Amplifier
• 4 ohm: 125 watts x 4 chan.
• 2 ohm: 200 watts x 4 chan.
• Bridged, 4 ohm: 400 x 2 chan.
• Pulse Width Modulated MOSFET Power Supply
• 4/3/2 Channel Operation

• Class D 4-Channel Amplifier
• 4 ohm: 125 watts x 4 chan.
• 2 ohm: 200 watts x 4 chan.
• Bridged, 4 ohm: 400 x 2 chan.
• Pulse Width Modulated MOSFET Power Supply
• 4/3/2 Channel Operation

NVX - Worth the Envy - Direct to Consumer Car Audio

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    FAQ Frequently asked questions in Discontinued Class-D Amplifiers


    Class D Amplifiers Frequently Asked Questions (FAQ)
    Class D amplifiers are a type of switching amplifier known for their high efficiency and compact size. Unlike traditional Class A, B, and AB amplifiers that use continuous analog voltage to amplify audio signals, Class D amplifiers employ a digital switching technique. This process rapidly switches the output transistors on and off, effectively turning them into binary switches that deliver the audio signal to the speaker. The switching nature of Class D amplifiers drastically reduces power wastage, resulting in higher efficiency and less heat production. As a result, Class D amplifiers are ideal for applications with limited space or power constraints, making them popular in car audio, home theater systems, and portable devices.
    Yes, modern Class D amplifiers have made significant advancements in audio fidelity and can deliver high-quality sound performance. While traditional audiophiles may have associated Class D with lower audio quality due to early models' limitations, today's Class D amplifiers have overcome many of these challenges. With advancements in switching technology, filtering, and feedback mechanisms, Class D amplifiers can now offer exceptional audio reproduction that rivals traditional Class AB amplifiers. Additionally, Class D amplifiers' efficiency and lower heat generation make them well-suited for high-power audio applications where traditional amplifiers would be impractical.
    Yes, Class D amplifiers are versatile and can power various speaker types, including subwoofers, woofers, mid-range, and tweeters. When selecting a Class D amplifier for your speakers, consider the power output (wattage) and impedance rating. Ensure that the amplifier's power rating matches or slightly exceeds your speakers' power handling capabilities to prevent underpowering or overpowering, which can lead to distortion or speaker damage. Additionally, check the amplifier's impedance range to ensure compatibility with your speakers' impedance. Most Class D amplifiers can handle both 4-ohm and 2-ohm loads, making them suitable for a wide range of speaker configurations.
    No, Class D amplifiers are known for their high efficiency, which results in significantly less heat generation compared to other amplifier classes like Class A or Class AB. The digital switching technique used in Class D amplifiers reduces power loss, resulting in a more efficient conversion of electrical energy into audio output. As a result, Class D amplifiers remain relatively cool even at high volume levels, making them suitable for space-constrained installations and applications where heat dissipation is a concern. Their cool operation also extends the lifespan of internal components and reduces the need for large heat sinks or fans.
    Yes, many Class D amplifiers support bridge mode, allowing you to increase the power output when driving a single speaker or subwoofer. In bridge mode, the amplifier combines the power output from two channels into a single channel, effectively doubling the power delivered to the speaker. However, it's essential to follow the manufacturer's guidelines and ensure that your amplifier supports bridging. Additionally, pay attention to the speaker's impedance requirements, as bridging may change the amplifier's impedance capabilities. If you're unsure or need assistance with bridging your Class D amplifier, contact Sonic Electronix's knowledgeable staff, who can help you find the right amplifier and configuration for your audio setup. With their compact size, high efficiency, and versatility, Class D amplifiers offer a compelling solution for various audio applications, delivering powerful and clear sound performance with minimal heat output.
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