StudioMaster QX4-6000 4-Channel Power Amplifier

KEY FEATURES OF THE STUDIOMASTER QX4-6000 POWER AMPLIFIER

1. Introduction to the StudioMaster QX4-6000 Power Amplifier

The StudioMaster QX4-6000 is a four-channel power amplifier from the StudioMaster QX Series, designed for professional sound systems that require high output power and flexible operation. With a published output rating of 4 × 2550W at 4Ω Stereo, it can be considered for full-range loudspeakers, subwoofers and professional line array systems.

According to the product description, the amplifier uses Class D technology and features a compact 1U rack design with Stereo, Parallel and Bridge operating modes. It is suitable for consideration in live stages, auditoriums, clubs and professional touring sound applications.

2. Four-Channel Design for Space-Efficient Installation

The StudioMaster QX4-6000 features a four-channel amplifier architecture, allowing multiple speaker groups to be powered by a single unit. Its 1U rack design helps save equipment space and makes installation alongside mixers, signal processors and other professional audio equipment more convenient.

With a published weight of approximately 12kg, the amplifier can be considered for both fixed installations and mobile sound systems that require regular transportation.

3. Powerful Four-Channel Amplification

The QX4-6000 provides high output power across its four channels. Its published Stereo power ratings include:

• 4 × 1500W at 8Ω Stereo.
• 4 × 2550W at 4Ω Stereo.
• The 2Ω rating is inconsistent on the product page: 4 × 3750W in the description and 4 × 3570W in the detailed specification section.

The four-channel configuration allows technicians to distribute amplification across multiple independent speaker groups, making it useful for stage and line array system designs. The 2Ω rating should be verified against official technical documentation before being used as a basis for system matching.

4. High-Power Bridge Mode

In addition to Stereo operation, the StudioMaster QX4-6000 supports Bridge mode, combining pairs of amplifier channels into higher-power outputs. The published Bridge ratings are:

• 2 × 3000W at 16Ω.
• 2 × 5100W at 8Ω.
• 2 × 7140W at 4Ω.

Bridge mode is useful for speaker configurations that require greater power from each amplifier output. Always follow the manufacturer's wiring instructions and impedance limits when using this mode.

5. 70V and 100V Hi-Z Support

According to the product description's specification list, the QX4-6000 supports two Hi-Z line voltage configurations:

• 4 × 2500W at 100V Hi-Z.
• 4 × 2400W at 70V Hi-Z.

This support expands the amplifier's potential applications in high-voltage distributed speaker systems. Before installation, check compatibility between the amplifier, speaker transformers and wiring configuration to ensure correct operation.

6. Wide Frequency Response

The StudioMaster QX4-6000 has a published frequency response of 20Hz to 20kHz. This range covers the common operating bandwidth of full-range sound systems, allowing the amplifier to be paired with a variety of loudspeakers.

When combined with suitable signal processing and speakers, the amplifier can serve in stage, auditorium, subwoofer and line array systems.

7. High Signal-to-Noise Ratio

The main specification section lists a signal-to-noise ratio greater than 110dB. This measurement describes the relationship between the audio signal and the amplifier's background noise.

A high signal-to-noise ratio can help support clear audio reproduction in a properly configured sound system. However, another specification section on the product page lists a range of >105–112dB, so the exact value should be confirmed against the official datasheet.

8. Selectable Input Sensitivity and Gain

The StudioMaster QX4-6000 offers selectable input sensitivity/gain options of 41dB, 38dB, 35dB and 32dB. These settings provide flexibility when matching the amplifier with mixers, processors and other signal-processing equipment.

The appropriate gain setting should be selected according to the source output level, loudspeaker sensitivity and overall system configuration to help prevent signal overload.

9. Stereo, Parallel and Bridge Operating Modes

The QX4-6000 supports three common operating modes for professional sound systems:

• Stereo: amplifier channels operate independently, suitable for multi-channel speaker systems.
• Parallel: the input signal is distributed in parallel to the amplifier channels according to the selected configuration.
• Bridge: pairs of channels are combined to provide higher-power outputs.

These operating modes allow the amplifier to adapt to different speaker layouts and professional sound system designs.

10. Class D Amplification and Switching Power Supply with PFC

According to the product description, the StudioMaster QX4-6000 uses Class D amplifier technology with a stated operating efficiency of over 95%. This design aims to deliver high output power in a compact 1U rack enclosure.

The product is also described as featuring a switching power supply and Power Factor Correction (PFC) technology. These features are relevant to professional sound systems that require high output power and operation across a wide input voltage range.

11. Balanced XLR Input Connectivity

The product description states that the QX4-6000 features balanced XLR inputs for connection to mixers, signal processors and other professional audio equipment.

Balanced connections help reduce interference along the signal path, particularly in installations with long cable runs or multiple electronic devices.

12. Output Limiter and Protection System

The StudioMaster QX4-6000 is described as featuring an output limiter to help control signal levels and reduce the risk of loudspeaker overload.

The product description also mentions an intelligent variable-speed cooling fan and protection mechanisms against overheating, overload, low voltage and DC output. Its internal modular design is presented as a way to support maintenance and servicing in professional touring environments.

13. Applications of the StudioMaster QX4-6000

With its four-channel architecture, high output ratings and multiple operating modes, the StudioMaster QX4-6000 can be considered for a range of professional sound applications:

• Live stage sound systems.
• Event and touring sound reinforcement.
• High-power full-range loudspeakers.
• Subwoofer systems.
• Line array systems.
• Auditoriums and conference venues.
• Professional bars, clubs and entertainment spaces.
• Fixed sound installations.

The final system configuration should be selected according to speaker power handling, impedance, channel requirements and the intended wiring arrangement.

14. Why Choose the StudioMaster QX4-6000 Power Amplifier?

The StudioMaster QX4-6000 is worth considering for professional sound systems that require a high-power four-channel amplifier, compact rack design and flexible operating configurations. Its published highlights include:

• Four-channel amplifier architecture.
• 4 × 2550W output at 4Ω Stereo.
• Bridge output up to 2 × 7140W at 4Ω.
• Published support for 70V and 100V Hi-Z systems.
• Stereo, Parallel and Bridge operating modes.
• Selectable input sensitivity/gain options.
• Class D amplifier technology according to the product description.
• Compact 1U rack design and approximately 12kg weight.

These features make the QX4-6000 a potential option for stage sound, auditoriums, line array systems and professional touring applications. For reliable operation, match the amplifier with compatible loudspeakers and signal-processing equipment.