How is the cooling system improved?

We upgraded the cooling system by adding 8 fans on the rear panel and extending the heatsink board to 94mm.

Can the gain be adjusted separately?

Yes, the gain is separately controllable with 31 positions ranging from -inf to 0 dB.

What is the lead time for delivery?

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

Class D Fp20000q 4 Channel Karaoke Speaker Audio Power Amplifier

Name: Class D Fp20000q 4 Channel Karaoke Speaker Audio Power Amplifier
Brand: Guangzhou Xinbaosheng Audio Equipment Co., Ltd.
SKU: 898540825

Guangdong, ChinaGuangzhou Xinbaosheng Audio Equipment Co., Ltd.

US$500.00-750.00

1 Piece

Product profile

Customization

Available

Type

Professional Amplifier

Usage

Stage

Model NO.

FP20000Q

Used For

Professional

Tube Type

Transistor Amplifier

Function

Post Amplifier

Sound Channel

4.1

Output Number

Voltage

220V&110V

Element Number

Push-Pull Amplifier

Conductive Mode

Amplifier Name

Fp20000q Switching Power Amplifier

Amplifier Type

Class D

Frequency Response

20 Hz - 34 kHz

Color

Black, Blue

8 Ohms Stereo Power(RMS)

2200wx4CH

4 Ohms Stereo Power(RMS)

4000wx4CH

Capacitor

3600UF 200V/Extended Heat Sink/New Cooling System

Application

Stage/Concert/KTV/Big Show/Church/Conference

Subwoofer

18 Inch Subwoofer

Warranty

Three Years

Certification

Ce, RoHS

OEM Sevice

Accepted

Transport Package

480*90*510mm Strong Carton

Specification

Trademark

Sinbosen

Origin

Guangzhou, China

HS Code

8518400090

Production Capacity

1000 PCS/Month

Key features

High Power Output: Delivers 4000W per channel at 4 Ohms and 2200W per channel at 8 Ohms.

Enhanced Cooling System: Features 8 rear fans and extended 94mm heat sink for superior heat dissipation.

Premium Capacitor Upgrade: Upgraded to 3600UF 200V capacitors for powerful subwoofer bass performance.

Comprehensive Protection: Includes ACL, IGM, AutoRamp, short circuit, DC voltage, and current inrush protection.

Flexible Voltage Gain: Offers 8 selectable gain levels ranging from 23dB to 44dB.

Dual Voltage Support: Operates on 110V or 220V with selectable nominal voltage settings.

Professional Connectors: Equipped with Neutrik XLR and Speakon connectors for balanced audio input.

Extended Warranty: Comes with a 3-year warranty covering quality problems with engineer support.

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: ≤4.21h

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.