Constant Voltage Amplifier
Audio amplifier is engineered for professional sound reinforcement, delivering powerful, clean audio across a wide range of applications—from conference rooms and auditoriums to educational institutions and hospitality venues. With robust build quality, efficient cooling design, and stable output, this amplifier ensures consistent sound performance and long-term reliability.
High current switching power ensures high power output with low noise and distortion
Equipped with comprehensive protection circuits: thermal protection, short circuit protection, power on/off mute, and delay protection
Built-in limiter for enhanced performance, stability, and speaker protection
European-style terminal block inputs/outputs for secure and reliable connections
Front panel gain control for quick and convenient adjustments
LED indicators for signal, clip protection, and power status monitoring
Supports amplifier disable/priority/fault status detection
Available in 2-channel or 4-channel installation models
Supports 70V/100V line output operation
Multiple power output options: 2×150W / 4×150W / 4×300W / 4×600W (at 70/100V)
1u 19” rack-mountable chassis for space-saving integration
Uses Switching Power Supply and Class D amplification for energy efficiency and low heat output
Specifications
Input sensitivity
0.9-1.1V (0+/-1dBV)
Frequency response
100 Hz - 15 kHz
THD+N
<0.1%
S/N
>95 dB
Crosstalk
>70dB
Power output circuit
Power supply, class D
Input impedance
0.9-1.1V (0+/-1dBV)
Indicator light
Red LED light, Priority: Green/Red
Power supply
AC 110-240V, 50/60 Hz
WHERE TO USE
Meeting Rooms & Boardrooms
An amplifier is an essential component of modern AV infrastructure in boardrooms and meeting spaces, enabling clear communication, effective collaboration, and an overall professional audio experience.
Auditoriums & Seminar Halls
In auditoriums and seminar halls, where large audiences gather for presentations, performances, speeches, or conferences, an amplifier is a crucial component of the sound reinforcement system. It significantly boosts audio signals to drive high-power speakers, ensuring that sound reaches every corner of the venue with clarity, volume, and minimal distortion.
Command & Control Centers
In Command & Control Centers, where critical operations and real-time decision-making depend on clear communication, amplifiers play a vital role in ensuring that all audio signals are delivered loudly, clearly, and reliably across the entire workspace.
Classrooms &
Lecture Halls
In Classrooms and Lecture Halls, amplifiers are essential for enhancing audio delivery, ensuring that every student hears the instructor clearly—regardless of seating position or room size.Amplifiers boost the instructor's voice through microphones, ensuring students at the back can hear just as clearly as those in the front.
Retail & Hospitality
In Retail and Hospitality environments, amplifiers play a vital role in creating a pleasant and immersive atmosphere while supporting critical communication functions.Amplifiers power in-ceiling or wall-mounted speakers to deliver consistent, high-quality background music that enhances the customer experience in stores, restaurants, lobbies, and lounges.
Courtrooms
In courtrooms, amplifiers are essential for maintaining clarity, authority, and fairness in judicial proceedings by ensuring all voices are heard clearly and accurately.Amplifiers ensure that everyone—from the judge and attorneys to witnesses and defendants—is clearly audible to all parties in the courtroom, including the jury and public observers.
Resources
Valuable resources for amplifiers include guides, tutorials, datasheets, and design tools that help users understand product features, plan integrations, and optimize sound system performance across various applications.
User Manual
DA - Series (Voltage Amplifier)
The DA series of professional power amplifiers are high-efficiency Class D installation amplifiers designed for reliable performance in commercial and professional AV setups. Ideal for fixed installations, these amplifiers support both 70V and 100V constant voltage speaker systems, selectable via DIP switches, making them versatile for a wide range of audio distribution applications.
Each channel is equipped with independent volume controls and intuitive LED indicators (Signal, Clipping, and Protection), allowing real-time monitoring and adjustment to maintain optimal audio performance and safeguard connected devices. Their compact design, low heat generation, and energy-efficient architecture make them an excellent choice for use in environments such as meeting rooms, auditoriums, educational institutions, retail spaces, and hospitality venues.
Additionally, the DA series is engineered for quiet operation with advanced circuit protection and thermal management, ensuring long-term durability and consistent sound quality in demanding 24/7 installations.
