EUDAC PTA-4120 Power Amplifier

The EUDAC PTA-4120 power amplifier is a professional 4-channel power amplifier designed to meet the needs of stage sound systems, auditoriums, commercial karaoke venues, and events.

With its powerful output, high-efficiency Class H amplifier circuit, and ability to operate stably over long periods, the PTA-4120 is the ideal solution for audio systems requiring high performance and reliability.

Introducing the EUDAC PTA-4120 Power Amplifier

The EUDAC PTA-4120 power amplifier is a 4-channel power amplifier developed for professional sound systems requiring powerful amplification and stable operation.

The product provides 4 x 1200W in Stereo 8Ω mode, 4 x 1800W at 4Ω, and 2 x 3360W in Bridge 8Ω mode, flexibly meeting the needs of various sound configurations from high-end karaoke and auditoriums to performance stages and line array systems.

Technical parameters of the product to consider:

• Power output: 4 × 1200W (8Ω Stereo) Each channel delivers 1200W of power at 8Ω impedance, effectively driving full-range speakers, monitor speakers, or high-power line array speakers. The 4-channel configuration provides users with greater flexibility in building and expanding their sound systems.
• Power output: 4 × 1800W (4Ω Stereo) When operating at a 4Ω load, each channel delivers 1800W of power, making it suitable for pairing with high-power speaker systems or multiple speakers connected in parallel, ensuring stable performance in professional performances.
• Bridge power output: 2 × 3360W (8Ω) Bridge mode allows combining two channels into one high-power channel, reaching 3360W/8Ω, ideal for driving high-power subwoofers or sound systems requiring high power output.
• Frequency response range 20Hz – 20kHz (+0dB/-0,1dB): This device amplifies the full range of audible frequencies, ensuring that sound signals from low to high frequencies are transmitted faithfully, preserving detail and minimizing signal loss during amplification.
• Signal-to-noise ratio (S/N) ≥105dB: A high signal-to-noise ratio (S/N) significantly reduces background noise, resulting in a clean signal, clear sound, and enhanced performance, especially in professional audio systems.
• Total Harmonic Distortion (THD) ≤0,05%: Very low harmonic distortion ensures that the amplified sound retains its fidelity, minimizing distortion when the device operates at high power.
• Input sensitivity 0,775V / 1,0V / 1,44V: With support for multiple input voltage levels, the EUDAC PTA-4120 is easily compatible with a wide range of audio sources, digital mixers, digital effects processors, and signal processors.
• Input impedance 20KΩ (Balanced) / 10KΩ (Unbalanced): Standard input impedance ensures stable signal reception, reduces signal loss, and is compatible with most professional audio equipment.
• Gain: 35dB The 35dB amplification level effectively boosts the signal while maintaining balance and stability throughout the entire sound system.
• Class H power circuit: Class H technology optimizes energy conversion efficiency, reduces heat generation, and saves power compared to many traditional amplifier circuits, while ensuring stable operation over a long period.
• Automatic dual-fan cooling system: The device is equipped with four cooling fans that can automatically adjust their speed according to the operating temperature, helping to maintain stable performance, prevent overheating, and extend component lifespan.
• Professional Connections: The EUDAC PTA-4120 uses 4 XLR input ports and 4 Neutrik Speakon NL4MP output ports, ensuring stable signal transmission, reliable connections, and compatibility with most modern audio systems.
• Dimensions: 485 × 495 × 90mm, Weight: 26,2kg The 2U rack-mount design makes it easy to install in professional audio equipment racks. Weighing 26,2kg, it demonstrates the high-quality power supply and components used, meeting the demands of continuous, high-intensity operation.

Key features of the EUDAC PTA-4120 power amplifier

The EUDAC PTA-4120 power amplifier is a 4-channel power amplifier designed for professional sound systems such as stages, auditoriums, commercial karaoke venues, and line array systems.

With its powerful output, advanced Class H amplifier circuit, and stable operation, this product effectively meets the signal amplification requirements for various audio configurations.

• Flexible 4-channel design: The EUDAC PTA-4120 allows simultaneous powering of multiple full-range speakers, monitor speakers, or subwoofers in the same system, optimizing investment costs and reducing the number of power amplifiers needed.
• Powerful amplification performance: This device provides a high power output, maintaining stable operation over extended periods, making it suitable for sound systems operating continuously at high intensity.
• Energy-saving Class H power amplifier circuit: Class H technology optimizes power conversion efficiency, reduces heat dissipation, minimizes energy waste, and enhances the durability of equipment during operation.
• Clean and accurate sound quality: With its low harmonic distortion and precise signal processing capabilities, the EUDAC PTA-4120 helps maintain audio detail, delivering clear vocals, balanced music, and minimizing distortion even at high power levels.
• Smart cooling system: The device is equipped with multiple cooling fans that operate automatically according to the actual temperature, helping to maintain stable performance, protect internal components, and extend the lifespan of the amplifier during continuous operation.
• Versatile combination: The EUDAC PTA-4120 easily integrates with full-range speakers, subwoofers, monitor speakers, line array speakers, and equipment such as mixers, DSPs, and digital processors, meeting the needs of various sound systems from high-end karaoke to professional stage performances.
• Standard connections for professional audio systems: The use of XLR and Neutrik Speakon connectors allows for quick installation, stable signal transmission, and ensures safety in high-power audio systems.
• Suitable for many large-scale sound projects: Thanks to its robust design, high performance, and reliable operation, the EUDAC PTA-4120 is a suitable choice for sound system contractors, event organizers, auditoriums, theaters, bars, karaoke businesses, and professional sound installations.

Detailed review of the EUDAC PTA-4120 Karaoke Amplifier

Powerful 4-channel output, suitable for a variety of audio configurations.

The EUDAC PTA-4120 is a 4-channel power amplifier designed for professional audio systems requiring high power output.

The device provides 4 x 1200W in Stereo 8Ω mode, 4 x 1800W in Stereo 4Ω mode, and 2 x 3360W in Bridge 8Ω mode, offering flexible power output for everything from high-end karaoke systems, auditoriums, and performance stages to large line array speakers and subwoofers.

Having four amplification channels also helps reduce the number of power amplifiers needed, optimizing installation space and investment costs.

Stable amplification quality, realistic sound.

The main EUDAC PTA-4120 has a frequency response range of 20Hz – 20kHz (+0dB/-0,1dB), allowing for full transmission of the audio spectrum from bass to treble without altering the characteristics of the source.

The device achieves a signal-to-noise ratio (S/N) of ≥105dB and total harmonic distortion (THD) of ≤0,05%, ensuring a clean, clear output signal with minimal distortion even at high power levels. This is a crucial factor in reproducing vocals, instruments, and sound effects authentically in professional audio systems.

Class H circuitry combined with an intelligent cooling system.

The EUDAC PTA-4120 utilizes a Class H power amplifier circuit, notable for its ability to optimize amplification efficiency, reduce heat dissipation, and save energy compared to many traditional amplifiers.

The device is also equipped with four automatic cooling fans that can adjust their speed according to the operating temperature, helping to maintain stable performance and protect internal components during continuous operation for extended periods. This is a particularly important advantage for stage systems, auditoriums, or sound rental services.

Professional connectivity and flexible pairing options.

The EUDAC PTA-4120 karaoke amplifier is equipped with 4 XLR input ports and 4 Neutrik Speakon NL4MP output ports, supporting stable connections with many modern audio devices.

In addition, the input sensitivity of 0,775V / 1,0V / 1,44V and input impedance of 20KΩ (Balanced) and 10KΩ (Unbalanced) make the device easy to pair with digital preamplifiers, digital mixers, DSP processors, full-range speakers, subwoofers, and line array speakers.

Thanks to its high compatibility and powerful performance, the EUDAC PTA-4120 is a suitable choice for commercial karaoke systems, performance stages, auditoriums, conference centers, and professional audio projects.

Applications of the EUDAC PTA-4120 Power Amplifier

The EUDAC PTA-4120 power amplifier is designed to meet the signal amplification needs of medium to large-scale professional sound systems. With its 4-channel configuration, powerful output, and flexible connectivity, the device is suitable for a variety of environments, from commercial karaoke venues to performance stages and auditoriums.

• Commercial karaoke system and VIP karaoke system.
• Stage performance sound system.
• Auditorium and conference center sound systems.
• Theaters, churches, and public buildings.
• Event organizer and sound system rental company.
• Matching components in a synchronized audio system.

Where can I buy a genuine and reliable EUDAC PTA-4120 power amplifier?

If you are looking for a genuine EUDAC PTA-4120 power amplifier at a reasonable price, with a full warranty and professional technical service, Phuc Truong Audio is one of the reputable addresses worth choosing.

With many years of experience in the audio equipment field, Phuc Truong Audio specializes in providing audio solutions for karaoke, auditoriums, stages, events, and professional sound systems nationwide.

When purchasing the EUDAC PTA-4120 at Phuc Truong Audio, customers are guaranteed 100% genuine products, complete with labels, documentation, and warranty according to the manufacturer's standards. Before delivery, the equipment is inspected, tested, and evaluated by our technical team to ensure the best quality for use.

In addition to distributing products, Phuc Truong Audio also provides consulting services to help users configure sound systems to suit their specific needs.

Our technical team will assist customers in selecting and matching full-range speakers, subwoofers, monitor speakers, line array speakers, digital processors, digital mixers, DSP processors, and wireless microphones to maximize the performance of the EUDAC PTA-4120 power amplifier.

Proper equipment matching not only delivers optimal sound quality but also ensures the system operates stably and reliably over the long term.

Frequently Asked Questions about Main Karaoke EUDAC PTA-4120

1. Which audio systems are compatible with the EUDAC PTA-4120 power amplifier?

The EUDAC PTA-4120 is suitable for many professional sound systems such as commercial karaoke setups , VIP karaoke rooms, auditoriums, performance stages, conference centers, bars, clubs, and event sound systems. With its 4-channel design and high power output, the device can simultaneously drive multiple full-range speakers, monitor speakers, or be combined with subwoofers and line array speakers in medium to large-scale systems.

2. Can the EUDAC PTA-4120 main amplifier drive a high-power subwoofer?

Yes. With power ratings of 4 × 1200W/8Ω, 4 ​​× 1800W/4Ω, and 2 × 3360W in Bridge mode at 8Ω, the PTA-4120 is capable of pairing with many high-power subwoofers on the market. When combined with DSP for frequency cutting and signal limiting, the device will maximize performance and ensure safe and stable subwoofer operation.

3. What are the advantages of the Class H power amplifier circuit on the EUDAC PTA-4120?

Class H amplifier circuitry enhances performance, reduces heat dissipation, and saves energy compared to many traditional power amplifiers . Furthermore, this technology helps the device maintain stable power output during continuous operation, making it ideal for professional stage, auditorium, and karaoke sound systems.

4. Is it advisable to combine the EUDAC PTA-4120 with a DSP or digital sound processor?

Therefore, a DSP processor or digital reverb unit will help control the input signal, adjust EQ, crossover, set limiters, and adjust the delay between speakers. This not only helps the system achieve optimal sound quality but also contributes to protecting the speakers and amplifier during operation.