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Studiomaster HX4-600 4x 255W at 4 Ohms High Performance 1U Digital Power Amplifier

SKU: STHX4600 MFR: HX4-600
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Key Features

  • Experience powerful audio with the Studiomaster HX4-600 power amplifier, delivering pristine sound.
  • This high-performance amplifier features a signal-to-noise ratio of 105dB, ensuring clear audio output.
  • Achieve optimal sound quality with a low THD of 0.02%, perfect for professional audio setups.
  • With input sensitivity at 1Vrms, this power amplifier is ideal for various audio sources.
  • Benefit from robust protection circuits, guarding against overload, thermal issues, and DC output.
  • High damping factor of 300 ensures tight bass, making it great for live sound and studio use.
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Special Order?Estimated to Ship: 08/15/2025
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Studiomaster HX4 Specifications

  • Slope (1kHz, Bypass LPF)

    50V/us

  • Input Sensitivity 1kHz

    1Vrms

  • THD+N

    0.02% (10% rated output power)

  • IMD-SMPTE

    0.05% (10% rated output power)

  • DIM30

    0.05% (10% rated output power)

  • Crosstalk rejection

    >80Db (less than rated power, 20Hz - 1kHz)

  • Frequency Response

    0.2dB (10% rated output power, 8ohm, 20Hz - 20kHz)

  • Input Impedance

    20k ohm (bal), 10k ohm (unbal)

  • Damping Factor

    300 (8ohm, 20Hz - 100Hz)

  • S/N ratio

    105dB (A weighted, 20Hz-20kHz)

  • Power supply

    90-260VAC, 50/60Hz

  • Protection

    Overoad/thermal/DC output protection

  • Wattage

    8ohms Stereo: 4x150 watts
    4ohms Stereo: 4x255 watts
    2ohms Stereo: 4x435 watts

    16ohm Bridged: 2x300 watts
    8ohm Bridged: 2x510 watts
    4ohm Bridged: 2x870 watts

  • Dimensions (W x H x D)

    19 x 1.7 x 12.7" (483 x 44 x 323mm)

  • Weight

    12.5 lbs (5.7kg)

  • UPC Code

    5060255344170

About Studiomaster HX4

When it comes to high-performance digital power amplifiers, the HX series, including the HX4-600 model, stands out with its ultra-lightweight and compact design. This 1U-sized powerhouse delivers an impressive 4x 255W at 4 Ohms, making it a robust choice for your audio needs.

The HX4-600 is engineered with comprehensive protection and status indicators, ensuring a safe and efficient operation. It's available in both 2 and 4 channel variants, with power offerings ranging from 2 x 225 watts at 4ohms up to a staggering 4 x 765 watts.

One of the key features of the HX4-600 is its power factor correction (PFC), which optimizes the amount of power delivered to the load. This feature, coupled with a universal power supply, allows the amplifier to operate seamlessly between 90-250VAC.

Moreover, the HX4-600 is designed to perform at loads down to 2ohms, providing you with the flexibility to handle a wide range of audio equipment. Whether you're a professional audio engineer or an audiophile, the HX4-600 4x 255W at 4 Ohms High Performance 1U Digital Power Amplifier is a reliable and high-performing choice for your sound amplification needs.

Studiomaster HX4 Features

  • Energy saving design with high efficiency
  • Power factor correction (PFC)
  • Universal 90-250V power supply
  • 4-channel model
  • Reliable efficient operation down to 2ohm loads
  • Variable speed fan cooling
  • Status and protection indicators
  • Stereo/parallel/bridge modes
  • Multiple gain modes
  • Output limiter
  • Balanced XLR inputs
  • Professional speaker connectors
  • Thermal, overload, DC protection
  • Thermal, fault and limiter indicators

Product Documents

User Manual

Key Features

  • Experience powerful audio with the Studiomaster HX4-600 power amplifier, delivering pristine sound.
  • This high-performance amplifier features a signal-to-noise ratio of 105dB, ensuring clear audio output.
  • Achieve optimal sound quality with a low THD of 0.02%, perfect for professional audio setups.
  • With input sensitivity at 1Vrms, this power amplifier is ideal for various audio sources.
  • Benefit from robust protection circuits, guarding against overload, thermal issues, and DC output.
  • High damping factor of 300 ensures tight bass, making it great for live sound and studio use.

What's in the box:

  • HX4-600 4x 255W at 4 Ohms High Performance 1U Digital Power Amplifier
  • Studiomaster 1 Year Limited Warranty