What is the lead time for production?

The average lead time is within 15 workdays for both peak and off-season periods.

What protection features are included?

It includes ACL, IGM, AutoRamp, short circuit, DC voltage, turn on/off transient, current inrush, and temperature protection.

What is the frequency response range?

The frequency response is 20 Hz - 34 kHz with a tolerance of +0/-0.3dB.

Ds-20q Class Td Power Amplifier Professional 4CH 4000W for 18 Inch Subwoofer

Name: Ds-20q Class Td Power Amplifier Professional 4CH 4000W for 18 Inch Subwoofer
Brand: Guangzhou Xinbaosheng Audio Equipment Co., Ltd.
SKU: 768689312

Guangdong, ChinaGuangzhou Xinbaosheng Audio Equipment Co., Ltd.

US$799.00

1 Piece

Product profile

Customization

Available

Type

Professional Amplifier

Usage

Hi-Fi, AV, KTV System, Stage

Model NO.

DS-20Q

Used For

Professional

Tube Type

Transistor Amplifier

Function

Post Amplifier, Amplifier Combined, Pre-amplifier

Sound Channel

4CH

Output Number

Voltage

110V & 220V

Element Number

Monoamplifier

Conductive Mode

Product Name

Ds-20q Power Amplifier

Class

Td Switching Power Amplifier

8 Ohm Stereo Power  (RMS)

2200wx4CH

4 Ohm Stereo Power  (RMS)

4000wx4CH

Frequency Response

20 Hz - 34 kHz

Signal-to-Noise Ratio

>112 Dba

Channel

4 Channel

Capacitor

3600UF 200V

Feature

New Cooling System/Big Power Amplifier

Application

Commercial, Professional Performance

Certificates

CE, RoHS

Warranty

Three Years

Service

OEM ODM Support ;After-Sale Service

Transport Package

Strong Packing

Specification

65&60&15cm

Trademark

Sinbosen

Origin

Guangdong Province, China

HS Code

8518400090

Production Capacity

1000 Units/ Month

Key features

High Power Output: 4000W x 4CH at 4 Ohms and 2200W x 4CH at 8 Ohms for powerful audio performance.

Advanced Cooling System: Equipped with 12 built-in fans and upgraded heat sinks for enhanced heat dissipation.

Premium Components: Uses original ONSEMI transistors, Neutrik connectors, and high-quality 3600UF capacitors.

Comprehensive Protection: Features ACL, IGM, short circuit, DC voltage, and temperature protection schemes.

Flexible Voltage Options: Supports selectable operating voltage of 180-240V or 90-130V for global compatibility.

OEM/ODM Support: Offers full customization, minor customization, and flexible customization options.

Three-Year Warranty: Provides a three-year warranty with professional engineer support for quality issues.

Low MOQ Requirement: No minimum order quantity limit, allowing orders from 1 piece to large volumes.

Company profile

High Repeat Buyers ChoiceYears of Export Experience

Guangzhou Xinbaosheng Audio Equipment Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 10 Years CertifiedNearest Port: Guangzhou PortAverage Response Time: ≤4.15h

AI-Powered supplier vetting

SummarySinbosen demonstrates broad customization and ODM capability, has introduced new products within the past year, and reports RoHS compliance. It offers small orders and customized samples, a stated three-year warranty, 18-hour service availability, and free after-sales support for quality or product problems. Production indicators include seven production lines, six to ten quality-control staff, inventory capability, and lead times within 15 working days in both peak and off-season periods. However, the supplier has no valid manufacturing-capacity contract with related subcontractors, no supplier management-system certification, no overseas warehouse, overseas branch or agent, showroom, or offline trade-show participation. Inspection and supplier-assessment procedures exist without records, and approved-supplier lists lack signatures or dates. Financial information is present only as year labels, so financial credibility cannot be verified. Customer-case evidence is limited: no Fortune 500 cooperation or...

Supplier typeThe supplier presents itself as a manufacturer with R&D, ODM, customization, inventory, and seven production lines. It exports mainly to Europe and North America, but has no overseas warehouse, branch, agent, showroom, or overseas-service country coverage.

CertificationsRoHS is explicitly identified as the supplier’s sustainable-development and product-compliance certification. However, supplier management-system certification is listed as NIL, so certification coverage is limited to the stated product-related standard.

After-Sales capabilityThe supplier states that it provides a three-year warranty, welcomes small orders and customized samples, offers 18-hour online service, and provides free after-sales support for quality or product problems. These are explicit service commitments, although no performance records are provided.

R&D capabilityThe supplier reports new products within the past year, ODM service, and broad design customization. It has two years of total R&D-engineer experience and no available SDK, indicating some product-development capability but limited evidence of advanced technical integration.

Production capacityProduction evidence includes seven production lines, six to ten quality-control staff, inventory capability, 30 qualified service-capability suppliers, and lead times within 15 working days in peak and off-season periods. A material control weakness is that no valid manufacturing-capacity contract exists with related subcontractors, while inspection and supplier-assessment procedures lack records.

Customization capabilityThe supplier explicitly supports customization from samples, full customization, customization from designs, minor customization, flexible customization, ODM services, and customized samples for small orders. This is direct evidence of broad customization flexibility.

Client casesThe supplier reports no OEM service for popular brands and no cooperation with Fortune 500 companies. No named customers, project examples, or verifiable case studies are provided, so customer-case strength cannot be established.