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  3. Discontinued Diamond Audio Car Audio & Electronics
  4. Discontinued Diamond Audio Car Amplifiers
  5. Discontinued Diamond Audio 4-Channel Amplifiers

Discontinued Diamond Audio 4-Channel Amplifiers

Perfect for multi-speaker setups, Diamond Audio's 4-channel amplifiers deliver balanced audio.

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Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Remote bass/level controller
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

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Diamond Audio DE400.4

400W Max (400W RMS) Elite Series 4 ohm Stable 4-Channel Class-A/B Amplifier

DE400.4 big DISCONTINUED
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Diamond Audio DE400.4

400W Max (400W RMS) Elite Series 4 ohm Stable 4-Channel Class-A/B Amplifier

• 70 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS x 1 @ 1 ohm
• CEA-2006 Compliant
• 0 - 12 dB Bass Boost
• Aluminum Heatsink

• 70 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• 200 Watts RMS x 1 @ 1 ohm
• CEA-2006 Compliant
• 0 - 12 dB Bass Boost
• Aluminum Heatsink

Diamond Audio D3 400.4

D3 Series 4-Channel Amplifier D3400.4

D3-400.4 big DISCONTINUED
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Diamond Audio D3 400.4

D3 Series 4-Channel Amplifier D3400.4

Black Anodized Heatsink • Raised Diamond Audio logo • 88W x 4 @ 2 Ohm RMS • 182W x 2 @ 4 Ohm RMS Bridged • 0 - 18dB Bass Boost • Built in crossovers

2

Black Anodized Heatsink • Raised Diamond Audio logo • 88W x 4 @ 2 Ohm RMS • 182W x 2 @ 4 Ohm RMS Bridged • 0 - 18dB Bass Boost • Built in crossovers

Diamond Audio D1300.4 (D1 300.4)

300W Max, D1 Series 4-Channel Amplifier

D1300.4 big DISCONTINUED
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Diamond Audio D1300.4 (D1 300.4)

300W Max, D1 Series 4-Channel Amplifier

D1 Series 4-Channel Class A/B Car Amplifier • 50 Watts x 4 Chan. @ 4 Ohm • 75 Watts x 4 Chan @ 2 Ohm • Bass Remote Control • Speaker Level Inputs • 3-Way Protection Circuitry • Polycarbonate End Plates •

D1 Series 4-Channel Class A/B Car Amplifier • 50 Watts x 4 Chan. @ 4 Ohm • 75 Watts x 4 Chan @ 2 Ohm • Bass Remote Control • Speaker Level Inputs • 3-Way Protection Circuitry • Polycarbonate End Plates •

** CLOSEOUT!! ** Diamond Audio D5-300.4

4-Channel Amplifier

D5-300.4 big DISCONTINUED
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** CLOSEOUT!! ** Diamond Audio D5-300.4

4-Channel Amplifier

300 Watt 4 Channel Amplifier • 75W RMS x 2 Chan. @ 2 Ohm • HPF(15Hz-1.5kHz)/LPF(50Hz-5kHz) • RCA Outputs • 4 Gauge Power Connectors • 10 Gauge Speaker Connectors

1

300 Watt 4 Channel Amplifier • 75W RMS x 2 Chan. @ 2 Ohm • HPF(15Hz-1.5kHz)/LPF(50Hz-5kHz) • RCA Outputs • 4 Gauge Power Connectors • 10 Gauge Speaker Connectors

Diamond Audio D6600.4

600W 4-Channel Reference Series Car Amplifier

D6-600.4 big DISCONTINUED
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Diamond Audio D6600.4

600W 4-Channel Reference Series Car Amplifier

600W 4-Channel Reference Series Car Amplifier • 4 ohm: 75 watts x 4 chan. • 2 ohm: 150 watts x 4 chan. • Bridged, 4 ohm: 300 watts x 2 chan. • Pulse Width Modulated MOSFET Power Supply • 4/3/2 Channel Operation

600W 4-Channel Reference Series Car Amplifier • 4 ohm: 75 watts x 4 chan. • 2 ohm: 150 watts x 4 chan. • Bridged, 4 ohm: 300 watts x 2 chan. • Pulse Width Modulated MOSFET Power Supply • 4/3/2 Channel Operation

Diamond Audio D6 700.4 (D6700.4)

700W Max, D6 Series Four-Channel Amplifier

D6 700.4 big DISCONTINUED
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Diamond Audio D6 700.4 (D6700.4)

700W Max, D6 Series Four-Channel Amplifier

Audio D6 Series 4-Channel Class A/B Car Amplifier • 115W x 4 Chan. @ 4 ohm• 175W x 4 Chan. @ 2 ohm • 700W x 2 Chan. Max • Tuned Bass EQ • Aluminum Alloy Heatsink • Bridgeable • Daisey Chain Capable

Audio D6 Series 4-Channel Class A/B Car Amplifier • 115W x 4 Chan. @ 4 ohm• 175W x 4 Chan. @ 2 ohm • 700W x 2 Chan. Max • Tuned Bass EQ • Aluminum Alloy Heatsink • Bridgeable • Daisey Chain Capable

** CLOSEOUT!! ** Diamond Audio D5-600.4

4-Channel Amplifier

D5-600.4 big DISCONTINUED
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** CLOSEOUT!! ** Diamond Audio D5-600.4

4-Channel Amplifier

600 Watt 4 Channel Amplifier • 150W RMS x 2 Chan. @ 2 Ohm • HPF(15Hz-1.5kHz)/LPF(50Hz-5kHz) • RCA Outputs • 4 Gauge Power Connectors • 10 Gauge Speaker Connectors

1

600 Watt 4 Channel Amplifier • 150W RMS x 2 Chan. @ 2 Ohm • HPF(15Hz-1.5kHz)/LPF(50Hz-5kHz) • RCA Outputs • 4 Gauge Power Connectors • 10 Gauge Speaker Connectors

Diamond Audio TX300.4

300W RMS 4-Channel Class AB TX Series Amplifier (TX3004)

TX300.4 big DISCONTINUED
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Diamond Audio TX300.4

300W RMS 4-Channel Class AB TX Series Amplifier (TX3004)

TX Series 4-Channel Class AB Amplifier • 50W x 4 Chan. @ 4 ohm • 75W x 4 Chan. @ 2 ohm • 150W x 2 Chan. @ 4 ohm • 3-Way System Protection • 4/3/2 Channel Operation • 4 Gauge Power and Ground Inputs • High Efficiency Thermal Convection Heat Sink

TX Series 4-Channel Class AB Amplifier • 50W x 4 Chan. @ 4 ohm • 75W x 4 Chan. @ 2 ohm • 150W x 2 Chan. @ 4 ohm • 3-Way System Protection • 4/3/2 Channel Operation • 4 Gauge Power and Ground Inputs • High Efficiency Thermal Convection Heat Sink

Diamond Audio D7104 ( D7 104 )

D7 Series 4-Channel Amplifier

D7-104 big DISCONTINUED
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Diamond Audio D7104 ( D7 104 )

D7 Series 4-Channel Amplifier

D7 Series 4-Channel Amplifier • 150W x 4 chan. @ 4 Ohm • 300W x 4 chan. @ 2 Ohm • fully regulated power supply • third-order Butterworth crossover • gold plated copper circuit board • thermal management system

2

D7 Series 4-Channel Amplifier • 150W x 4 chan. @ 4 Ohm • 300W x 4 chan. @ 2 Ohm • fully regulated power supply • third-order Butterworth crossover • gold plated copper circuit board • thermal management system

Diamond Audio D7056 ( D7 056 )

D7 Series 6-Channel Amplifier

D7-056 big DISCONTINUED
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Diamond Audio D7056 ( D7 056 )

D7 Series 6-Channel Amplifier

D7 Series 6-Channel Amplifier • 50W x 6 chan. @ 4 Ohm • 100W x 6 chan. @ 2 Ohm • fully regulated power supply • third-order Butterworth crossover • gold plated copper circuit board • forced-air cooling system

D7 Series 6-Channel Amplifier • 50W x 6 chan. @ 4 Ohm • 100W x 6 chan. @ 2 Ohm • fully regulated power supply • third-order Butterworth crossover • gold plated copper circuit board • forced-air cooling system

Diamond Audio TX600.4

600W RMS 4-Channel Class AB TX Series Amplifier (TX6004)

TX600.4 big DISCONTINUED
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Diamond Audio TX600.4

600W RMS 4-Channel Class AB TX Series Amplifier (TX6004)

TX Series 4-Channel Class AB Amplifier • 90W x 4 Chan. @ 4 ohm • 150W x 4 Chan. @ 2 ohm • 300W x 2 Chan. @ 4 ohm • 3-Way System Protection • 4/3/2 Channel Operation • 4 Gauge Power and Ground Inputs • High Efficiency Thermal Convection Heat Sink

TX Series 4-Channel Class AB Amplifier • 90W x 4 Chan. @ 4 ohm • 150W x 4 Chan. @ 2 ohm • 300W x 2 Chan. @ 4 ohm • 3-Way System Protection • 4/3/2 Channel Operation • 4 Gauge Power and Ground Inputs • High Efficiency Thermal Convection Heat Sink

Diamond Audio D6600.4 Open Box

600W 4-Channel Reference Series Car Amplifier

D6-600.4 big DISCONTINUED
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Diamond Audio D6600.4 Open Box

600W 4-Channel Reference Series Car Amplifier

600W 4-Channel Reference Series Car Amplifier • 4 ohm: 75 watts x 4 chan. • 2 ohm: 150 watts x 4 chan. • Bridged, 4 ohm: 300 watts x 2 chan. • Pulse Width Modulated MOSFET Power Supply • 4/3/2 Channel Operation

600W 4-Channel Reference Series Car Amplifier • 4 ohm: 75 watts x 4 chan. • 2 ohm: 150 watts x 4 chan. • Bridged, 4 ohm: 300 watts x 2 chan. • Pulse Width Modulated MOSFET Power Supply • 4/3/2 Channel Operation

 
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    Diamond Audio 4-Channel Amplifiers Information

    A 4 channel car amplifier from Diamond Audio will provide your vehicle with the power it requires. These amps can operate four channels and Diamond Audio is a leader in amplification solutions. Power your speakers with a Diamond Audio 4-channel amplifier for a great all-around sound.
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