What is the warranty or quality control process?

All finished products undergo 100% inspection including visual and functional checks.

What is the sound channel configuration?

The amplifier supports 2 to 4 sound channels.

Where is the nearest port for shipping?

The nearest ports are Guangzhou port and Shenzhen port.

High Stability Df Series Power Amplifier for Optimal Sound Quality

Name: High Stability Df Series Power Amplifier for Optimal Sound Quality
Brand: Resonance Audio Equipment Co., Ltd.
SKU: 2159241672

Guangdong, ChinaResonance Audio Equipment Co., Ltd.

US$439.00

1 Piece

Sample price:US$439.00/piece.Request sample

Product profile

Customization

Available

Type

Professional Amplifier

Usage

Bar / Theater / Tour Application

Used For

Professional

Tube Type

Transistor Amplifier

Function

Post Amplifier

Sound Channel

2-4

Voltage

Wide Voltage

Element Number

Push-Pull Amplifier

Conductive Mode

Transport Package

Box

Specification

483×500×89mm

Trademark

RESONANCE

Origin

China

Production Capacity

We Can Produce 3, 000 Units Per Month

Key features

Wide Voltage Support: Designed for global use with wide voltage compatibility.

Multi-Channel Configuration: Offers 2-4 sound channels for versatile audio applications.

D-Class Technology: Utilizes D conductive mode for high efficiency and performance.

Push-Pull Design: Employs push-pull amplifier element structure for stability.

OEM and ODM Services: Provides flexible customization from samples, designs, and minor adjustments.

Professional Grade Quality: Engineered for bar, theater, and tour applications with high stability.

Full Production Inspection: 100% visual and functional inspection for all finished products.

Established Manufacturing: Backed by advanced auto plug-in and soldering machines since 2013.

Company profile

Resonance Audio Equipment Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 11 years CertifiedNearest Port: Guangzhou port, Shenzhen portAverage Response Time: ≤4.95h

AI-Powered supplier vetting

SummaryThe supplier is identified as a combined company and a professional technical supplier offering 3D software design, OEM, ODM, and multiple customization options. It reports four production lines, SMT, a crest welder, an aging machine, standardized finished-product inspection instructions, and 11 years of export experience. Innovation evidence includes new products within the past year, but no SDK availability. Service infrastructure is limited: no overseas warehouse, showroom, agent or branch, offline trade-show participation, or overseas service coverage is reported. Service-management weaknesses include no written procedures or records for supplier assessment, corrective actions, or complaint handling, although quality assurance is reported. No factory environmental impact assessment report is available, and continuous batch quantity reconciliation is not performed. Certification and customer-case evidence are not provided.

Supplier typeThe supplier is classified as a combined company and explicitly identifies itself as a professional technical supplier. This indicates a mixed business structure with technical-service positioning, but the slices do not provide more specific legal or organizational detail.

After-Sales capabilityThe supplier reports no overseas warehouse, showroom, agent or branch, offline trade-show participation, or overseas service coverage. It also has no written procedures or records for complaint handling, supplier-service assessment, or corrective and preventive actions, indicating limited documented after-sales infrastructure.

R&D capabilityThe supplier provides 3D software design services, reports new products within the past year, and offers ODM services. However, it has no available SDK, so the evidence supports product and design development but not SDK-based innovation capability.

Production capacityManufacturing evidence includes four production lines, SMT, a crest welder, and an aging machine, as well as uniformly followed finished-product inspection instructions. However, the factory does not continuously reconcile quantities for every batch or mass-production run, indicating a documented production-control weakness.

Customization capabilityThe supplier explicitly supports customization from samples, minor customization, flexible customization, full customization, and customization from designs. It also provides 3D software design services, supporting a broad customization range.

Client casesThe supplier states that it provides OEM services for well-known brands, which is direct evidence of brand-serving experience. No specific customer names, project details, or case outcomes are supplied, so the depth of the customer-case record is limited.