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Studiomaster QX4-6000 4x 2550W at 4 Ohms High Performance 1U Digital Power Amplifier

SKU: STQX46000 MFR: QX4-6000
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Key Features

  • Experience high power output with this Studiomaster power amplifier, up to 2550W at 4 Ohms!
  • Achieve pristine audio clarity with a >105-112dB signal-to-noise ratio, perfect for critical listening.
  • Ensure optimal impedance matching with versatile input options for balanced and unbalanced connections.
  • Benefit from a low THD of 0.01%, delivering clean and accurate sound reproduction at all levels.
  • Rely on the robust cooling system for stable performance, even during demanding live sound applications.
  • Enjoy comprehensive protection features, guarding against overload, thermal issues, and DC output problems.
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Special Order?Estimated to Ship: 09/18/2025
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Studiomaster QX4 Specifications

  • Slope (1kHz, Bypass LPF)

    50V/us

  • Input Sensitivity 1kHz

    Option: 41dB, 38dB, 35dB, 32dB

  • THD+N

    0.01% (10% rated output power)

  • IMD-SMPTE

    0.01% (10% rated output power)

  • DIM30

    0.01% (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

    5000 (8ohm, 20Hz - 200Hz)

  • S/N ratio

    >105-112dB (A weighted, 20Hz-20kHz)

  • Power supply

    90-260VAC, 50/60Hz

  • Protection

    low voltage/overoad/thermal/DC output protection

  • Wattage

    8ohms Stereo: 4x1500 watts
    4ohms Stereo: 4x2550 watts
    2ohms Stereo: 4x3570 watts

    16ohm Bridged: 2x3000 watts
    8ohm Bridged: 2x5100 watts
    4ohm Bridged: 2x7140 watts

  • Dimensions (W x H x D)

    19 x 1.7 x 18" (483 x 44 x 462mm)

  • Weight

    22-26.4 lbs (10-12kg)

  • UPC Code

    5060255344248

About Studiomaster QX4

What sets the QX4-6000 4x 2550W at 4 Ohms High Performance 1U Digital Power Amplifier apart is its advanced amplifier adjustment technology, which ensures over 95% efficiency and stable performance even under high current, low impedance conditions. This high-performance digital power amplifier from the reputable brand, StudioMaster, is designed to deliver clear, crisp, and well-balanced sound, making it an ideal choice for professional musicians, DJs, or audio engineers.

This powerful amplifier features active power factor correction (PFC) and an ultra-reliable soft power switching power supply that operates universally between 90-250VAC. This ensures that the amplifier can adapt to a wide range of power supply conditions, making it versatile and reliable for various professional audio and music applications.

The QX4-6000 is part of the QX series, which are all 1U height, lightweight designs, weighing less than 12kg. This makes the amplifier easy to transport and install, adding to its appeal for use in live performances, recording studios, and sound reinforcement systems.

The QX series offers both 2 and 4 channel versions, with power ratings ranging from 2550 watts per channel up to 5100 watts per channel at 4 ohms. At 2 ohm operation, the flagship QX4-8000 can supply up to 4 x 4760 watts, demonstrating the series' capacity for extremely high performance.

In summary, the QX4-6000 4x 2550W at 4 Ohms High Performance 1U Digital Power Amplifier is a powerful, professional, and advanced audio solution that provides high-quality sound and cost-effective solutions for multiple install and rental applications, including line array systems.

Studiomaster QX4 Features

  • Energy saving with over 95% efficiency
  • Power factor correction (PFC)
  • Universal 90-250V power supply
  • 4-channel model
  • Reliable efficient operation down to 2ohm loads
  • Variable speed fan cooling
  • Internally modular design for quick maintenance
  • Stereo/parallel/bridge modes
  • Multiple gain modes
  • Output limiter
  • Balanced XLR inputs
  • 32A mains power input socket
  • 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 2550W at 4 Ohms!
  • Achieve pristine audio clarity with a >105-112dB signal-to-noise ratio, perfect for critical listening.
  • Ensure optimal impedance matching with versatile input options for balanced and unbalanced connections.
  • Benefit from a low THD of 0.01%, delivering clean and accurate sound reproduction at all levels.
  • Rely on the robust cooling system for stable performance, even during demanding live sound applications.
  • Enjoy comprehensive protection features, guarding against overload, thermal issues, and DC output problems.

What's in the box:

  • QX4-6000 4x 2550W at 4 Ohms High Performance 1U Digital Power Amplifier
  • Studiomaster 1 Year Limited Warranty