3. Stetsom
  5. Bravo HQ 400.4

Bravo HQ 400.4

105 Watt

Bravo HQ 400.4

Technical Highlights

  • Total output of 400 watts RMS, frequency range 5 Hz–30 kHz.
  • Output impedance maximum 2 ohms stereo, S/N ratio > 90 dB.
  • Output power at 14.4 V: up to 4 x 105 watts RMS, THD < 1 %.
  • More technical details
€62.30
-30% €89.00 €62.30
2% discount with credit card

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ProductBravo HQ 400.4

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1 year extra warranty

Every product purchased from Masori includes an additional year of warranty in the third year after purchase (months 25–36). We cover repair or replacement free of charge for covered warranty claims. Automatic and free – exclusively for Masori customers. Your statutory rights remain unaffected.

Warranty terms
datasheet
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Stetsom-Bravo Full 1.2K-1-Kanal Verstärker-masori-kaufen
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Stetsom-Bravo HQ 400.4-4-Kanal Verstärker-masori-kaufen
€62.30
€89.00 €62.30

More power than Bravo HQ 400.4 here!

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The Bravo HQ 400.4 from Stetsom is a 4-Channel Amplifier that impresses with a total power of 400 Watts RMS. It offers four channels with different power specifications at 12.6 V and 14.4 V, making it flexible for stereo and bridged operation. With a frequency range of 5 Hz to 30 kHz and a signal-to-noise ratio of over 90 dB, it delivers clear and powerful sound experiences. The amplifier is also equipped with variable high and low pass filters as well as adjustable input sensitivity. It operates with a voltage of 9 to 15.5 V DC, with a current draw of 17 A for music signals and 34 A for bass signals. Its compact design with dimensions of 127 x 167 x 58.5 mm and a weight of 640 g allows for easy integration.

Power & Performance:

  • Channels: 4 Channels.

  • Total Power: 400 Watts RMS.

  • Output Power at 12.6 V:

    • 4 x 85 Watts RMS @ 2 Ohm (Stereo).

    • 4 x 50 Watts RMS @ 4 Ohm (Stereo).

    • 2 x 170 Watts RMS @ 4 Ohm bridged (Bridge).

  • Output Power at 14.4 V:

    • 4 x 105 Watts RMS @ 2 Ohm (Stereo).

    • 4 x 60 Watts RMS @ 4 Ohm (Stereo).

    • 2 x 210 Watts RMS @ 4 Ohm bridged (Bridge).

  • Frequency Range: 5 Hz – 30 kHz.

  • Signal-to-Noise Ratio (S/N): > 90 dB.

  • Total Harmonic Distortion (THD): < 1 %.

Filters & Audio Settings:

  • Crossover High Pass (HPF): 50 Hz – 2.3 kHz (variable).

  • Crossover Low Pass (LPF): 50 Hz – 2.3 kHz (variable).

  • Input Sensitivity: RCA: 200 mV – 8.0 V / High Level (HIGH): 1.5 V.

  • Input Impedance: RCA: 15 kOhm / High Level (HIGH): 1 kOhm.

  • Output Impedance: 2 Ohm (Stereo).

Power Supply & Consumption:

  • Operating Voltage: 9 V – 15.5 V DC.

  • Current Draw (Music Signal): 17 A.

  • Current Draw (Bass Signal): 34 A.

Dimensions & Weight:

  • Width (W): 127 mm.

  • Length (D): 167 mm.

  • Height (H): 58.5 mm.

  • Weight: 640 g.

Immediately available 4-Channel Amplifier

    datasheet

    Open data sheet

    Frequently Asked Questions about Bravo HQ 400.4

    What power does the Bravo HQ 400.4 provide at different voltages?

    The Bravo HQ 400.4 from Stetsom offers differentiated output power at both 12.6 V and 14.4 V. At 12.6 V, it delivers 4 x 85 Watts RMS at 2 Ohm in stereo mode and 4 x 50 Watts RMS at 4 Ohm. For bridged connections, it provides 2 x 170 Watts RMS at 4 Ohm. At a voltage of 14.4 V, the power increases to 4 x 105 Watts RMS at 2 Ohm and 4 x 60 Watts RMS at 4 Ohm, while in bridged mode, 2 x 210 Watts RMS at 4 Ohm is available. This setup allows for high flexibility and adaptation to various power supply conditions.

    What frequencies can the Bravo HQ 400.4 cover?

    The Bravo HQ 400.4 impresses with a wide frequency range of 5 Hz to 30 kHz, ideal for detailed music playback. This means you can reproduce both deep bass notes and high frequencies with impressive clarity and precision. A significant advantage of this bandwidth is the ability to capture the full spectrum of a piece of music, thus enabling an authentic reproduction of various music genres. This characteristic of the Bravo HQ 400.4 becomes particularly effective with bass-heavy or high-frequency tracks.

    What adjustment options do the crossover filters of the Bravo HQ 400.4 offer?

    The Bravo HQ 400.4 features variable crossover filters that can be adjusted for both High Pass (HPF) and Low Pass (LPF) from 50 Hz to 2.3 kHz. These settings allow for precise adjustment of the frequency response to your speaker configuration and listening preference. Especially in more complex audio systems with different types of speakers, this variability and flexibility provide an important advantage, as you can fine-tune and optimize the sound character, whether you prefer clear highs or controlled lows.

    What about the compatibility of the Bravo HQ 400.4?

    The Bravo HQ 400.4 seamlessly fits into most vehicle configurations with its compact dimensions of 127 mm width, 167 mm length, and 58.5 mm height. With these measurements, you have the option to position the Amplifier almost anywhere in the car, whether under a seat or in the trunk. It is important to check the exact space availability in the vehicle before installation. The Amplifier weighs a light 640 grams, making handling and installation easier. This way, you can flexibly integrate it into the suitable location in your car.

    How efficient is the Bravo HQ 400.4 in power consumption?

    The Bravo HQ 400.4 operates with a supply voltage of 9 V to 15.5 V DC, giving it high flexibility in power supply. In terms of current consumption, it shows moderate efficiency with 17 A under normal music signals and 34 A under bass-heavy signals. These values are crucial for the power consumption of the Amplifier and ultimately affect the energy balance of your vehicle, especially during prolonged listening sessions. Always use an appropriate power source to maintain the optimized power output of the Amplifier.

    What is the signal-to-noise ratio of the Bravo HQ 400.4?

    The signal-to-noise ratio of the Bravo HQ 400.4 is > 90 dB, ensuring clear and clean audio output. A high S/N value means that the Amplifier generates little additional noise to the original signal, which is particularly important during quiet passages in music pieces. This results in music playback free from unwanted disturbances, benefiting the overall sound quality and listening experience. This quality is crucial for enthusiasts who value the highest sound precision and clarity.

    What impedance values does the Bravo HQ 400.4 support?

    The Bravo HQ 400.4 is designed to operate with a stereo output impedance of 2 Ohm. This specific impedance allows for greater power amplification, which can lead to louder and more powerful audio playback. The input impedance varies, with the RCA connection providing 15 kOhm and high-level inputs having an impedance of 1 kOhm. These impedances ensure that the signal remains consistent across different sources and achieves consistently high audio quality with various equipment.

    What are the highlights of the audio settings on the Bravo HQ 400.4?

    The Bravo HQ 400.4 impresses with its flexible input sensitivity, which can be adjusted via RCA at 200 mV – 8.0 V as well as via high-level (HIGH) at 1.5 V. This versatility allows for fine-tuning of the input signal according to the connected source. The variable high and low-pass filters from 50 Hz – 2.3 kHz enable precise adjustment of the audio output to the listener's preferences. These features make the Amplifier extremely adaptable regarding the control of various speaker systems and individual sound preferences.

    How robust is the Bravo HQ 400.4 in terms of total harmonic distortion?

    The Bravo HQ 400.4 demonstrates remarkable stability in signal processing with a total harmonic distortion (THD) of < 1%. Such a low total harmonic distortion ensures that distortions in the audio signal remain minimal and the fidelity of the incoming signal is preserved. The result is a clearer and more convincing audio playback, which is beneficial in both quiet and loud segments. This low level of distortion falls within a range that is generally perceived as inaudible by most users.

    What are the technical specifications of the Bravo HQ 400.4 for its inputs and outputs?

    The Bravo HQ 400.4 uses an input sensitivity that varies between RCA (200 mV – 8.0 V) and high-level inputs (1.5 V). The different specifications mean that it can work flexibly with various audio sources, whether they require analog or digital signal outputs. Additionally, an RCA input impedance of 15 kOhm and a high-level input impedance of 1 kOhm ensure that the Amplifier operates efficiently and consistently, while the maximum output power is achieved at a stereo output impedance of 2 Ohm.

    Manufacturer information/responsible person

    SONOAUTO AB
    Brodalsvägen 1B
    433 38 Partille
    Sweden
    +46 (0) 31 44 44 12

    info@sonoauto.se