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4X250W 4 Channel Power Amplifiers with DSP
US$500.00-1,000.00
1 Piece
Product profile
Customization
AvailableType
Professional AmplifierUsage
AV, KTV System, Conference Hall,Stadium,Multi-Functional HallModel NO.
DA2.4-DUsed For
ProfessionalTube Type
Class DFunction
Pre-amplifierSound Channel
4×250WOutput Number
4Voltage
90-260VACElement Number
PfcConductive Mode
D8Ω Stereo Power
4×250W4Ω Stereo Power
4×420W2Ω Stereo Power
4×720Wwith DSP
with Imported Germany DSP ModuleTransport Package
45X483X461mmSpecification
4 channelTrademark
RFOrigin
Guangzhou, ChinaHS Code
8518400090Production Capacity
2000PCS/MonthKey features
Built-in DSP Module: Features 2 in 4 out DSP with 96kHz sampling rate and 10-band parametric filter.
Class D Technology: Applies innovative Class-D technology for high efficiency and full-featured protection.
Remote Control: LCD display allows real-time parametric adjustment and remote control via PC.
1U Compact Design: 1U rack mount design ensures cost-effective shipping, carrying, and installation.
Multiple Presets: Includes 100 selectable presets for easy saving and calling of settings.
Comprehensive Protection: Protects against under-voltage, DC output, overheating, and overload conditions.
Company profile

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.
Product Q&A
Q:How long is the warranty for the speakers?
A:
1year warranty.
Q:How about the delivery time?
A:
3-7days for stock. 10-20 days for new order depend on order quantity since receipt of 30% T/T deposit payment.
Q:What kind of payments does RF support?
A:
T/T, Western Union, Cash are accpeted.
Q:What's the MOQ?
A:
MOQ is 1pcs
Q:Can you produce according to customers' design?
A:
Yes we can, we are professional manufacturer,OEM & ODM are welcome .
Send Inquiry
*To:
Guangzhou Ruifeng Intelligence Technology Co., Ltd
Guangzhou Ruifeng Intelligence Technology Co., Ltd*Content:
Supplier replies will be sent to your registered email
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