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DD Audio D4.75 4-Channel Amplifier
SKU:  D4-75
EAN:  4251950304335
90 Watt

D4.75

SKU:  D4-75
EAN:  4251950304335

Technical Highlights

  • 2 x 180W RMS at 4 Ohm bridge, 75W x 4 channels at 4 Ohm.
  • Waterproof PCB, MOSFET amplifier, RCA input level: 6V-0.2V.
  • Frequency response 10Hz-27kHz, S/N ratio over 90dB, damping factor > 100.
  • More technical details
€249,00
€249,00 €249,00
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inkl. VAT , possibly plus shipping
Delivery
Aug 2, - Aug 7,
at your door in 5–10 days This item isn't in stock right now. We'll ship it within the stated delivery time.
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The DD Audio D4.75 is a black 4-channel amplifier with labeled connectors, ridged heat-dissipating top, and mini-chassis, shown on a white background.
€249,00
€249,00 €249,00

D4.75 by DD Audio

The DD Audio D4.75 is a 4-Channel Amplifier in a mini chassis for ISO connections. In 4-ohm bridged mode, it delivers 2 x 180 watts RMS, at 4 ohms 75 W x 4, and at 2 ohms 90 W x 4. The power supply features a MOSFET power supply amplifier with 5-way protection. A water-resistant coated circuit board is integrated. Variable 12 dB/oct filters, a frequency response of 10 Hz to 27 kHz, and a damping factor > 100 are present. The inputs operate with a sensitivity of 6 V to 0.2 V, the total harmonic distortion is < 0.2%, and the maximum current draw is 40 A. Dimensions: 160 x 100 x 45 mm; shipping weight: 1.5 kg.

Features
  • 4-Channel Amplifier
  • Mini chassis for ISO connections
  • Water-resistant coated PCB
  • 5-way protection integrated
  • Variable 12 dB/oct filters
  • MOSFET power supply amplifier
  • RCA signal pass-through
  • Dimensions: 160 x 100 x 45 mm
Technical Specifications
  • Output channels: 4
  • Continuous power @ 4 ohms: 75 W x 4
  • Continuous power bridged @ 4 ohms: 180 W x 2
  • Continuous power @ 2 ohms: 90 W x 4
  • Maximum current draw: 40 A
  • RCA input voltage sensitivity: 6 V to 0.2 V
  • RCA input S/N: > 90 dB
  • Damping factor: > 100
  • Total harmonic distortion (THD): < 0.2 %
  • Frequency response: 10 Hz – 27 kHz
  • Subsonic filter: 50 Hz – 5 kHz
  • Low-pass filter: 50 Hz – 5 kHz
  • Pass-through output: No
  • Power cable gauge: 2 x 1.5 mm²
  • Speaker cable gauge: 1 mm²
  • Dimensions: 160 x 100 x 45 mm
  • Shipping weight: 1.5 kg

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Frequently Asked Questions about D4.75

What power does the DD Audio D4.75 Amplifier provide in 4-ohm bridged mode?

The DD Audio D4.75 Amplifier offers an impressive continuous power output of 2 x 180 Watts RMS in 4-ohm bridged mode, making it a powerful companion for compact audio applications. These power characteristics are ideal for applications that require high audio output, such as motorsport or marine audio installations. Despite its small size, the amplifier impresses with high power delivery and versatility to support acoustically demanding applications.

How is the water protection coating of the D4.75 implemented?

The DD Audio D4.75 Amplifier features a water-protected circuit board that has been specifically designed for use in harsh environments. This protection makes the amplifier exceptionally robust, as it is effectively resistant to moisture and dust. Therefore, it is not only suitable for use in vehicles but also perfect for motorcycles, UTVs, and marine applications, where it withstands extreme conditions and ensures long-term reliability.

What filter options does the DD Audio D4.75 have?

The DD Audio D4.75 Amplifier is equipped with variable 12dB/octave filters that include both sub-sonic and low-pass filters. The sub-sonic filters cover a frequency range from 50Hz to 5kHz, while the low-pass filters also range from 50Hz to 5kHz. These adjustable parameters allow for precise frequency control to eliminate unwanted frequencies and optimally adjust the displacement desired for the speakers.

What is the maximum current draw of the D4.75 Amplifier?

The DD Audio D4.75 Amplifier has a maximum current draw of 40 Amperes. This specified current draw is an indicator of its performance, as it ensures the need for sufficient power supply for optimal operation under full load. Especially in high-performance applications at low impedance, this current draw is crucial. The choice of power cables with a cross-section of 2 x 1.5mm² is essential for a stable and loss-free power supply.

What channel configurations are possible with the D4.75?

The DD Audio D4.75 is designed as a 4-channel amplifier that allows for different power outputs. In 4-ohm mode, it delivers 75 Watts per channel, while in 2-ohm mode, it provides 90 Watts per channel. The amplifier can also be bridged to output 2 x 180 Watts RMS. This flexible configuration option is excellent for making individual speaker adjustments, whether in complex multi-channel sound systems or in power-driven stereo applications.

What is the significance of the RCA input on the DD Audio D4.75?

The DD Audio D4.75 is equipped with RCA inputs that accept an input voltage of 6V to 0.2V. This wide voltage range allows connection to various signal sources with different signal outputs. The RCA input also has a signal-to-noise ratio (S/N) of over 90dB, contributing to clear and distortion-free signal transmission. These features make the amplifier extremely adaptable to different audio sources and installations.

What sensitivity and distortion does the D4.75 amplifier have?

The DD Audio D4.75 offers an RCA input sensitivity of 0.2V to 6V, meaning it can efficiently process both quiet and strong signals to transmit them to speakers. At the same time, the total harmonic distortion is very low at less than 0.2%, ensuring remarkably clear and undistorted audio signal output. This combination provides an ideal foundation for integration into high-quality HiFi systems, where precision and sound purity are essential.

What are the dimensions of the DD Audio D4.75 and how does that affect installation?

With dimensions of 160 x 100 x 45 mm, the DD Audio D4.75 is designed to be exceptionally compact. This small size greatly facilitates installation, especially in tight spaces, such as in motorcycles or small vehicles. Thanks to its size, it can be easily installed under seats, in glove compartments, or in cramped boats. This flexibility in placement allows the user to integrate the unit almost invisibly without compromising performance.

Is the DD Audio D4.75 amplifier suitable for marine use?

The DD Audio D4.75 is ideal for marine applications due to its waterproof-coated circuit board. This protective feature allows for use in environments with high humidity and potential water exposure, such as in boats or other marine vehicles. In addition to moisture protection, the excellent craftsmanship ensures resistance to corrosion and environmental stressors, highlighting its usability in various environments.

What is the significance of the MOSFET power supply in the D4.75 amplifier?

The DD Audio D4.75 is equipped with a MOSFET power supply amplifier that ensures efficient power delivery and low heat generation. MOSFETs are known for their ability to perform fast switching operations, making them particularly suitable for use in high-performance amplifiers. This technology also ensures that maximum power is reliably and efficiently achieved without overloading the components. The MOSFET design provides stable voltage delivery, contributing to reduced distortion.

Manufacturer information / responsible person

Audio Import Group
Pekka Kinnunen
Palkkitie 10
84100 Ylivieska
Finland

Contact: info@audioimport.fi

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The DD Audio D4.75 is a 4-Channel Amplifier in a mini chassis for ISO connections. In 4-ohm bridged mode, it delivers 2 x 180 watts RMS, at 4 ohms 75 W x 4, and at 2 ohms 90 W x 4. The power supply features a MOSFET power supply amplifier with 5-way protection. A water-resistant coated circuit board is integrated. Variable 12 dB/oct filters, a frequency response of 10 Hz to 27 kHz, and a damping factor > 100 are present. The inputs operate with a sensitivity of 6 V to 0.2 V, the total harmonic distortion is < 0.2%, and the maximum current draw is 40 A. Dimensions: 160 x 100 x 45 mm; shipping weight: 1.5 kg.

Features
  • 4-Channel Amplifier
  • Mini chassis for ISO connections
  • Water-resistant coated PCB
  • 5-way protection integrated
  • Variable 12 dB/oct filters
  • MOSFET power supply amplifier
  • RCA signal pass-through
  • Dimensions: 160 x 100 x 45 mm
Technical Specifications
  • Output channels: 4
  • Continuous power @ 4 ohms: 75 W x 4
  • Continuous power bridged @ 4 ohms: 180 W x 2
  • Continuous power @ 2 ohms: 90 W x 4
  • Maximum current draw: 40 A
  • RCA input voltage sensitivity: 6 V to 0.2 V
  • RCA input S/N: > 90 dB
  • Damping factor: > 100
  • Total harmonic distortion (THD): < 0.2 %
  • Frequency response: 10 Hz – 27 kHz
  • Subsonic filter: 50 Hz – 5 kHz
  • Low-pass filter: 50 Hz – 5 kHz
  • Pass-through output: No
  • Power cable gauge: 2 x 1.5 mm²
  • Speaker cable gauge: 1 mm²
  • Dimensions: 160 x 100 x 45 mm
  • Shipping weight: 1.5 kg

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