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Studiomaster HX4-1000 4x 425W at 4 Ohms High Performance 1U Digital Power Amplifier

SKU: STHX41000 MFR: HX4-1000
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Key Features

  • Experience high power output with this Studiomaster power amplifier, up to 4x425W at 4 Ohms.
  • Ensure reliable performance for live sound with overload and thermal protection features.
  • Enjoy input flexibility with balanced and unbalanced inputs for versatile connectivity options.
  • This durable build 1U digital power amplifier is designed for the rigors of professional use.
  • Keep your system running cool with an efficient cooling system, preventing overheating during gigs.
  • Achieve low distortion and pristine audio quality for crystal-clear sound in any venue.
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Special Order?Estimated to Ship: 09/10/2025
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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: 4x250 watts
    4ohms Stereo: 4x425 watts
    2ohms Stereo: 4x725 watts

    16ohm Bridged: 2x500 watts
    8ohm Bridged: 2x850 watts
    4ohm Bridged: 2x1450 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

    5060255344187

About Studiomaster HX4

Take your audio experience to the next level with the HX4-1000 4x 425W at 4 Ohms High Performance 1U Digital Power Amplifier. As part of the esteemed HX series, this amplifier is designed with an ultra-lightweight and compact structure, yet it doesn't compromise on performance.

This high-performance digital power amplifier is available in both 2 and 4 channel variants, offering a wide range of power outputs from 2 x 225 watts at 4 ohms to a robust 4 x 765 watts. This versatility ensures that the HX4-1000 can accommodate a variety of audio setups and requirements, making it an ideal choice for both professional and home use.

The HX4-1000 is designed with comprehensive protection and status indicators, providing you with real-time feedback and ensuring the longevity of your equipment. Its 1U size makes it a perfect fit for any audio rack, saving space without sacrificing power.

One of the standout features of the HX4-1000 is its Power Factor Correction (PFC) and universal power supply, which operates seamlessly between 90-250VAC. This means you can use it in a variety of locations and situations, with the assurance that it will perform optimally.

Moreover, the HX4-1000 is capable of performing at loads down to 2 ohms, providing you with the flexibility to use it with a wide range of speakers and audio equipment.

In summary, the HX4-1000 4x 425W at 4 Ohms High Performance 1U Digital Power Amplifier is a compact, lightweight, and high-performing addition to the HX series, designed to deliver superior audio quality and versatility.

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 high power output with this Studiomaster power amplifier, up to 4x425W at 4 Ohms.
  • Ensure reliable performance for live sound with overload and thermal protection features.
  • Enjoy input flexibility with balanced and unbalanced inputs for versatile connectivity options.
  • This durable build 1U digital power amplifier is designed for the rigors of professional use.
  • Keep your system running cool with an efficient cooling system, preventing overheating during gigs.
  • Achieve low distortion and pristine audio quality for crystal-clear sound in any venue.

What's in the box:

  • HX4-1000 4x 425W at 4 Ohms High Performance 1U Digital Power Amplifier
  • Studiomaster 1 Year Limited Warranty