What is the efficiency of this amplifier?

Thanks to multi-loop control technology, the working efficiency is more than 95%.

4 Channel PA System Professional 2000W Power Amplifier Audio Amplifier

Name: 4 Channel PA System Professional 2000W Power Amplifier Audio Amplifier
Brand: Guangzhou Ruifeng Intelligence Technology Co., Ltd
SKU: 841387985

Guangdong, ChinaGuangzhou Ruifeng Intelligence Technology Co., Ltd

US$1,000.00-1,600.00

1 Piece

Product profile

Customization

Available

Type

Professional Amplifier

Usage

AV, KTV System, Conference Hall, Stadium, Multi-Functional Hall

Model NO.

DA20.4

Used For

Professional

Tube Type

IC Amplifier

Function

Pre-amplifier

Sound Channel

2X3000W

Output Number

Voltage

90-260VAC

Element Number

Pfc

Conductive Mode

8Ω Stereo Power

4×2000W

Frequency Response

20Hz~20kHz(±0.2dB)

Power Supply

90~260VAC, 50~60Hz

Transport Package

45X483X461mm

Specification

4x2000Watt

Trademark

Origin

Guangzhou, China

HS Code

8518400090

Production Capacity

1600PCS/Month

Key features

High Efficiency: Multi-loop control technology ensures efficiency exceeding 95%.

Comprehensive Protection: Features under voltage, DC, overheat, temperature, and overload protection.

Low Distortion: THD+N is less than 0.01% with S/N ratio of 112dB.

Wide Voltage Range: Supports 90-260VAC power supply for global adaptability.

Active PFC Technology: Uses active PFC and soft switching for stable performance in harsh environments.

Versatile Application: Suitable for KTV, stadiums, conference halls, and professional sound systems.

Customizable Options: Input sensitivity is optional with 41dB/38dB/35dB/32dB choices.

Company profile

Guangzhou Ruifeng Intelligence Technology Co., Ltd

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2018-03-29 CertifiedNearest Port: Guangzhou PortAverage Response Time: ≤18h CertifiedTerms of Payment: T/T, Western Union

AI-Powered supplier vetting

SummaryGuangzhou Ruifeng Intelligence Technology Co., Ltd. is a China-based limited company established in 2015 and focused on professional audio products, including line array speakers, full-range speakers, monitors, subwoofers, amplifiers, and processors. The supplier reports an integrated R&D, manufacturing, distribution, design, and technical-consultation capability, with six production lines, 11 years of combined R&D engineer experience, and 21–30 quality-control staff. It reports a one-month peak- and off-peak lead time and production information of 20,000 line array speakers. OHSAS18001:2007 and other management-system certifications are stated, but the certification scope is not detailed. Evidence supports product development and manufacturing capability, while customer references, detailed after-sales procedures, customization examples, and broader financial credibility remain insufficiently documented.

Supplier typeThe supplier is a limited company based in Guangdong, China, operating as an integrated professional sound and lighting business. Its stated activities cover R&D, manufacturing, distribution, design services, technical consultation, and related technical services, with products spanning professional audio equipment.

CertificationsThe supplier states that it holds an OHSAS18001:2007 certificate and other certifications. This provides explicit evidence of at least one management-system certification, although no details are provided on the other certifications or current validity.

R&D capabilityThe supplier reports an R&D center, 11 years of combined R&D engineer experience, and an independent professional sound brand created in 2015. It also states that the subsidiary focuses on intelligent, high-end, professional-grade sound-product R&D, supporting a positive assessment of innovation capability.

Production capacityProduction evidence includes six production lines, two factories within the technology park, reported output of 20,000 line array speakers, and a stated one-month lead time in both peak and off-peak seasons. The supplier also reports a manufacturing plant area of 1,500 square meters, indicating established production capability, although capacity for products other than line array speakers is not specified.

Customization capabilityThe supplier explicitly offers design services and technical consultation and states that it delivers related technical services for professional-grade sound products. These statements support some solution-design capability, but no specific customized-product examples, engineering process, minimum order requirements, or customization scope are provided.