StudioMaster QX4-8000 4-Channel Power Amplifier

KEY FEATURES OF THE STUDIOMASTER QX4-8000 4-CHANNEL CLASS D POWER AMPLIFIER

1. Overview of the StudioMaster QX4-8000

The StudioMaster QX4-8000 is a 4-channel power amplifier from the StudioMaster QX Series, designed for professional audio systems that require high output power and flexible operation.

Featuring Class D digital amplification technology, a specified efficiency of over 95% and a switching power supply with integrated PFC, the QX4-8000 is designed to deliver powerful performance while optimizing energy consumption and reducing heat generation. It is suitable for line array systems, live performance stages, large auditoriums, bars, clubs, lounges and professional touring sound systems.

2. High-Efficiency Class D Digital Amplification

The StudioMaster QX4-8000 uses modern Class D digital amplification technology, with a specified efficiency of over 95%. This technology helps optimize power conversion, reduce energy losses and limit heat generation during operation.

As a result, the amplifier is designed to support high-power audio systems while helping optimize rack space and operating conditions in professional installations.

3. Powerful 4-Channel Amplifier Configuration

The QX4-8000 features four amplifier channels, allowing users to distribute power across multiple speaker groups within a single sound system.

This configuration is suitable for professional installations using full-range speakers, subwoofers or line arrays that require multiple independent amplifier channels. Integrating four channels into one unit helps simplify equipment layout, save rack space and streamline system deployment.

4. High Output Power with 2Ω Load Capability

One of the key features of the StudioMaster QX4-8000 is its high output power, supporting a range of professional speaker configurations:

• 4 × 2000W at 8Ω Stereo.
• 4 × 3400W at 4Ω Stereo.
• 4 × 4760W at 2Ω Stereo.
• 2 × 4000W at 16Ω Bridge.
• 2 × 6800W at 8Ω Bridge.
• 2 × 9520W at 4Ω Bridge.

The specified 2Ω operating capability provides additional flexibility when designing high-power speaker systems. Users should check the total impedance, wiring configuration and load limits according to the manufacturer's instructions before operation.

5. Support for 70V and 100V Hi-Z Speaker Systems

In addition to low-impedance speaker configurations, the product page also lists Hi-Z power ratings for constant-voltage systems:

• 4 × 3400W in 100V Hi-Z mode.
• 4 × 2400W in 70V Hi-Z mode.

These are the power ratings published in the product information. Before installation, users should verify Hi-Z compatibility and the corresponding connection method against the official technical documentation to ensure system compatibility.

6. Wide Frequency Response from 20Hz to 20kHz

The StudioMaster QX4-8000 has a specified frequency response of 20Hz–20kHz, supporting audio amplification across a wide frequency range.

This specification makes the amplifier suitable for various audio content, from speech and background music to live performances requiring full-range reproduction. Actual audio performance also depends on the loudspeakers, signal processor and overall system configuration.

7. Signal-to-Noise Ratio Greater Than 112dB

The QX4-8000 is specified with a signal-to-noise ratio greater than 112dB. This figure represents the difference between the audio signal and the noise floor under the corresponding measurement conditions.

A high S/N ratio supports clean signal reproduction and helps meet the requirements of professional sound systems, particularly applications involving high-power amplification.

8. Selectable Input Sensitivity Settings

The product information lists selectable input sensitivity or gain settings of 41dB, 38dB, 35dB and 32dB.

These options provide greater flexibility when matching the QX4-8000 with mixers, signal processors and other audio equipment. Selecting the appropriate input setting helps optimize signal levels and reduce the risk of overload.

9. Switching Power Supply with Integrated PFC

The StudioMaster QX4-8000 uses a switching power supply with integrated PFC technology, helping optimize power efficiency and support operation under varying power supply conditions.

According to the product page, the amplifier operates within a voltage range of 90–260VAC at 50/60Hz. This feature is useful for professional sound systems deployed across different venues.

10. Stereo, Parallel and Bridge Operating Modes

The QX4-8000 supports several operating modes to accommodate different signal distribution and speaker configurations:

• Stereo: The amplifier channels operate independently, suitable for systems requiring separate signal paths.
• Parallel: Distributes the input signal in a suitable parallel configuration.
• Bridge: Combines amplifier channels in bridge mode to provide higher output power for compatible loads.

The selected mode must follow the manufacturer's wiring instructions and impedance limits.

11. Comprehensive Protection System

The StudioMaster QX4-8000 is described as featuring protection functions including a Limiter, thermal protection, overload protection and DC protection.

These mechanisms help manage abnormal operating conditions and contribute to protecting the amplifier and connected speakers. For effective protection, users should select compatible speaker loads and configure the system according to its technical specifications.

12. Compact 1U Rack-Mount Design with Approximately 12kg Weight

Despite its high output power, the QX4-8000 is presented with a 1U rack-mount design and an approximate weight of 12kg.

This design helps save rack space and makes it convenient to install multiple power amplifiers within the same system. Its relatively compact weight also supports transportation and installation for event production companies and touring sound applications.

13. Versatile Applications in Professional Audio Systems

With its high output power, four-channel configuration, Class D technology and multiple operating modes, the StudioMaster QX4-8000 is suitable for applications such as:

• Professional line array systems.
• Live performance stages and music events.
• Large auditoriums and event venues.
• Bar, club and lounge sound systems.
• High-power subwoofer systems.
• Professional touring sound systems.
• Audio installations requiring multiple high-power amplifier channels.

14. Why Choose the StudioMaster QX4-8000 Power Amplifier?

The StudioMaster QX4-8000 is a four-channel power amplifier designed for professional sound systems with demanding power and operational flexibility requirements. Its Class D digital technology with over 95% specified efficiency, switching power supply with integrated PFC, 2Ω load capability and Stereo, Parallel and Bridge modes provide multiple options for system design.

In addition, its 1U rack-mount design, approximate 12kg weight and integrated protection functions make it suitable for audio system integrators, event production companies, performance stages and professional line array installations.