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DD Audio

D4.75

4-channel amplifier

249,00€
249,00€ 249,00€
incl. VAT , possibly plus shipping

Stock options

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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.
Seen more cheaply Personal Offer
brand: DD Audio
Delivery time:
Available to you in 5-10 days
Number:
Piece
Watt RMS per channel:
90
Amplifier Type:
Class D
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249,00€ 249,00€

The DD Audio D4.75 4-channel amplifier is a mini chassis amplifier for ISO connections, designed to make space-restricted installations a breeze. However, one should not be deceived by its size! In 4-ohm bridged mode, this little powerhouse can deliver over 2 x 180 watts RMS. Additionally, it features a waterproof coated circuit board for extra protection against moisture and dust in harsh environments, making it perfect for motorcycles, UTVs, and boats.

features

  • 4-channel amplifier
  • Water protection coated PCB
  • 5-way protection integrated
  • Variable 12dB/Oct Filter
  • RCA signal transmission
  • MOSFET power supply amplifier

Data

  • Output channel(s): 4
  • Continuous power @4ohm: 75 x 4 / 180 x 2
  • Continuous power @2Ohm: 90 x 4
  • Maximum current draw (Amperes): 40
  • Sensitivity of the RCA input voltage: 6V ~ 0.2V
  • RCA input S/N: > 90dB
  • Damping factor: > 100
  • Clarity factor: < 0.2%
  • Frequency response (Hz): 10Hz - 27kHz
  • Sub-Sonic Filter: 50Hz - 5kHz
  • Low-pass filter: 50Hz - 5kHz
  • Pass Thru Exit: No
  • Power cable thickness: 2 x 1.5mm²
  • Speaker wire gauge: 1mm²
  • Dimensions (mm): 160 x 100 x 45
  • Shipping weight: 1.5kg
The DD Audio D4.75 amplifier offers an impressive continuous power 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 where high audio output is required, such as in motorsport or boat audio installations. Despite its small size, the amplifier impresses with high power output and versatility to support sonically demanding applications.
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. As a result, it is not only suitable for use in motor vehicles but also perfect for motorcycles, UTVs, and marine applications, where it withstands extreme conditions and ensures long-term reliability.
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.
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.
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.
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 for 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 various audio sources and installations.
The DD Audio D4.75 offers an RCA input sensitivity of 0.2V to 6V, which means it can efficiently process both quiet and strong signals to transmit them to speakers. At the same time, the distortion factor 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 purity of sound are essential.
With dimensions of 160 x 100 x 45 mm, the DD Audio D4.75 is designed to be extremely compact. This small size significantly facilitates installation, especially in tight spaces, such as in motorcycles or compact vehicles. Thanks to its size, it can be easily installed under seats, in glove compartments, or even in cramped boats. This flexibility in placement allows the user to integrate the unit almost invisibly without compromising performance.
The DD Audio D4.75 is ideally suited for marine applications due to its water-protected 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 protection against moisture, the excellent workmanship ensures resistance to corrosion and environmental stressors, highlighting its usability in various environments.
The DD Audio D4.75 is equipped with a MOSFET power supply amplifier that ensures efficient power supply 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, which helps to reduce distortion.

Audio Import Group
Pekka Kinnunen
Palkkitie 10
84100 Ylivieska
Finland

Contact: info@audioimport.fi

Product Specifications

Manufacturer

DD Audio

Product type

4-channel amplifier

Features

  • 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.

  • Uvp

    249

weight

1.2 kg

Watt RMS per channel

90

configurators

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Your advantages with Masori

Buy DD Audio D4.75 4-channel amplifier online with performance highlights

The DD Audio D4.75 4-channel amplifier offers concentrated power in a compact mini-chassis format. With a continuous output of 75 watts per channel at 4 ohms and an impressive 180 watts in bridged mode, this amplifier is ideal for space-constrained installations. Despite its small size, its stable performance is in no way inferior to conventional models. Of particular note is the waterproof coated circuit board, which protects the amplifier against moisture and dust, making it ideal for applications in harsh environments on motorcycles, UTVs, and boats. With the Masori Lowest Price Guarantee, you can always secure this amplifier at the best price. Buy now at masori.de.

ISO connectors and variable 12dB/Oct filter for flexible installations

The DD Audio D4.75 amplifier is equipped with ISO connectors, making it much easier to integrate into existing systems. The variable 12dB/octave subsonic and low-pass filters allow you to precisely tune your sound system. The low-pass filter, with a range of 50Hz to 5kHz, ensures seamless crossover frequency adjustment, while the subsonic filter offers the same bandwidth to efficiently handle low frequencies. These filter options give you the flexibility to precisely tailor the sound to your needs while protecting the components in your audio setup.

Water-resistant coating against dust and moisture

The waterproof PCB of the DD Audio D4.75 amplifier provides effective protection against environmental influences. This protective measure is not only essential for harsh environments but also extends the lifespan of the amplifier. Unlike uncoated PCBs, which are more susceptible to corrosion and short-term failure, the coated version offers reliable performance even under adverse conditions. This is particularly practical for use on motorcycles, boats, or off-road vehicles, where water contact is more common.

Efficient design with compact dimensions

With its compact dimensions of just 160 x 100 x 45 mm, the DD Audio D4.75 amplifier is easy to install in almost any vehicle. Its low shipping weight of 1.5 kg also facilitates handling during installation. Despite its small size, it offers performance comparable to much larger models. These compact dimensions make it an ideal choice for limited space in cars without sacrificing performance.

MOSFET power amplifiers for reliable performance

The DD Audio D4.75 uses a MOSFET power amplifier, known for its excellent efficiency and performance. Compared to conventional transistors, MOSFETs offer faster switching time and better thermal stability, resulting in more efficient use of the power supply. This means consistent performance and less heat generation, which is especially important when mounting the amplifier in tight spaces.

Power supply and cable management: 2 x 1.5mm² and 1mm² cross-section

The DD Audio D4.75 amplifier supports a power cable cross-section of 2 x 1.5mm² and speaker wire gauges of up to 1mm². These robust cable options ensure minimal electrical losses and efficient power transmission. In applications with mini-chassis amplifiers, it is important to select an appropriate cable cross-section to optimally supply all electrical components. This ensures stable sound transmission at both high and low impedances.

Excellent signal-to-noise ratio and low distortion for clear audio quality

The DD Audio D4.75 offers an RCA input S/N ratio of over 90 dB, ensuring clean and interference-free audio reproduction. The total harmonic distortion is below 0.2%, providing virtually distortion-free sound quality. These values ​​are crucial for enjoying high-resolution music without disturbing side frequencies. The high damping factor of over 100 also ensures precise control of the speaker cone, optimizing bass reproduction.

Maximum power consumption and efficiency of the amplifier

With a maximum current consumption of 40 amps, the DD Audio D4.75 amplifier is one of the most efficient in its class. This energy consumption ensures that the amplifier operates reliably even at maximum power load without overheating or performance degradation. Amplifiers in this category often have a maximum current consumption of over 50 amps, making the DD Audio D4.75 amplifier particularly resource-efficient.

Adjustable RCA signal feedthrough for optimized audio transmission

The DD Audio D4.75 features an efficient RCA signal feedthrough, allowing for variable RCA input voltage sensitivity adjustment from 6V to 0.2V. This adjustment capability is crucial for ideally matching the signal strength to the other audio components and optimally reproducing low frequencies within the audio band. Modern car hi-fi systems typically use RCA feedthroughs with more limited voltage ranges, making the DD Audio D4.75 a flexible partner for more demanding sound systems. Take advantage of on-site installation in Frankfurt (Oder) or contact our expert support FAQ &amp; Help for further assistance. Learn more about DD Audio's audio world in the Audio Blog .