What are the lead times for production?

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

What is the input voltage range?

The power requirement is 90-265V~50Hz with PFC support.

What types of applications is this suitable for?

It is suitable for stage, bar, club, KTV, karaoke, home, theater, indoor and outdoor activities, concerts, and parties.

Class D 1u Digital Amplifier K4-450 4 Channels Sound System Audio Equipment

Name: Class D 1u Digital Amplifier K4-450 4 Channels Sound System Audio Equipment
Brand: Guangzhou Xinbaosheng Audio Equipment Co., Ltd.
SKU: 711208562

Guangdong, ChinaGuangzhou Xinbaosheng Audio Equipment Co., Ltd.

US$145.00-165.00

1 Piece

Product profile

Customization

Available

Type

Professional Amplifier

Usage

Hi-Fi, AV, KTV System, Stage

Model NO.

K4-450

Used For

Professional

Tube Type

Transistor Amplifier

Function

Post Amplifier, Amplifier Combined, Pre-amplifier

Sound Channel

4.1

Output Number

Voltage

110V or 220V

Element Number

Monoamplifier

Conductive Mode

Amplifier Type

1u Digital Amplifier

Product Name

K4-450 Power Amplifier

Class

Class D Power Amplifier

Channel

4 Channel Power Amplifier

Output Power 8ω

450wx4CH

Frequency Response

20 Hz - 20 kHz

Feature

Perfect Sound/1u/4CH/Digital AMP

Application

Karaoke/Indoor/Stage/Concert/Party/KTV/Bars/Church

Certificates

CE, RoHS

Warranty

Three Years

Service

OEM ODM Support ;After-Sale Service

Transport Package

Strong Packing

Specification

Trademark

Sinbosen

Origin

Guangdong Province, China

HS Code

85184000

Production Capacity

5000 PCS/Month

Key features

High Power Output: Delivers 450W per channel into 8 Ohms with 4 channels total.

Class D Efficiency: Advanced Class D technology ensures high efficiency and reliable sound.

Comprehensive Protection: Built-in protection against short circuit, overload, thermal issues, and DC.

Universal Voltage: Supports 90-265V input with PFC for global power compatibility.

Compact 1U Design: Mini 1U size (55x32x11cm) ideal for touring and stage applications.

Premium Connectors: Equipped with original Neutrik XLR and Speakon connectors.

Low Distortion: Features <0.05% THD at 1KHz for precise and clear audio reproduction.

Bridge Mode Support: Enables bridge-mode operation for versatile touring applications.

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.

Product Q&A

Q:What is the warranty period?

We provide a three-year warranty for the power amplifier. If there are quality problems, please provide pictures or video for engineer assessment and after-sale support.

Q:What is the output power?

The amplifier delivers 450W per channel into 8 Ohms across 4 channels.

Q:Does this amplifier support customization?

Yes, we offer full customization, customization from samples and designs, minor customization, and flexible customization options.

Q:Is there a minimum order quantity?

No, there is no minimum order quantity limit. You can order as few as 1 piece or up to 1,000,000 pieces.

Q:What certifications does the product have?

The product holds CE and RoHS certifications.