What is the input impedance for the microphone?

The microphone input impedance is 600 Ohms for the CA4601 model.

Does the amplifier have a frequency response specification?

Yes, the frequency response ranges from 40Hz-20kHz for CA4601 and 60Hz-20kHz for other models.

What is the power input requirement?

The power input is AC200V-220V at 50-60Hz depending on the specific model.

Ca Series Constant Voltage Power Amplifier Ca660

Name: Ca Series Constant Voltage Power Amplifier Ca660
Brand: DONGGUAN FDB AUDIO MANUFACTURE CO .,LTD
SKU: 943541835

Guangdong, ChinaDONGGUAN FDB AUDIO MANUFACTURE CO .,LTD

US$1.00-3,000.00

1 Piece

Product profile

Customization

Available

Type

Professional Amplifier

Used for

Professional

Model NO.

CA660

Function

Pre-Amplifier

Usage

PRO Amplifier

Tube Type

PRO Amplifier

Input Impedance

Aux:10 Kohms Mic:600ohms

Input Voltage

Aux:1V Mic: 1.8mv

Line Output Impedance

Output Voltage

70V-100V

MP3 Format

FM Frequency

FM Antenna Spec

Power Input

AC200V 50-6-Hz

Package Size

500*450*100mm

Net Weight

19kg

Transport Package

Carton Box

Specification

480x450x100mm

Trademark

FDB

Origin

Dongguan, China

HS Code

8518900090

Production Capacity

5000PCS/Month

Key features

Integrated Media Playback: CA4601 model features USB/SD card support with auto-play MP3 and FM radio at startup.

Superior MIC Input Priority: Microphone input takes precedence over all other audio inputs for clear announcements.

Comprehensive Protection Circuit: Equipped with safeguards against overvoltage, overcurrent, short circuit, and midpoint drift.

Dual Output Modes: Models offer selectable constant impedance and constant voltage terminals for flexible installation.

High Power Output Options: Available in 460W, 660W, 1000W, and 1500W variants to suit various professional needs.

ISO 9001 Certified Quality: Manufactured under strict ISO 9001:2008 standards ensuring stability and reliability.

OEM/ODM Customization: Full OEM and ODM services available for custom branding and specifications.

Fast Lead Time: Average production lead time within 15 working days for both peak and off-peak seasons.

Company profile

DONGGUAN FDB AUDIO MANUFACTURE CO .,LTD

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤24h CertifiedTerms of Payment: LC, T/T, Small-amount payment CertifiedInternational Commercial Terms(Incoterms): FOB, CIF, CFR, EXW

AI-Powered supplier vetting

SummaryThe supplier is a China-based professional audio manufacturer with operations in Dongguan, Guangdong, and reported establishment dates of 2006 and 2010 in different records. Its stated product scope includes professional transducers, speaker cabinets, amplifiers, processors, horns, and related accessories. Evidence indicates a 7,500 m² manufacturing plant, 98 employees, advanced production and testing equipment, 10 R&D engineers, and ISO9001:2015 and ISO14001:2015 certifications. The company reports cooperation with BOSE, Thoman, and Proel in developing models, as well as positive customer feedback regarding quality stability, reliability, and consistency. However, the records contain inconsistent legal/company names and entity classifications, and provide insufficient evidence regarding after-sales processes, financial credibility, and formal customization services.

Supplier typeThe records identify the supplier as a manufacturing-oriented company in the professional audio sector, with a Dongguan manufacturing address, a 7,500 m² plant, and products including transducers, cabinets, amplifiers, and processors. However, one record classifies the company as a trade company, while another identifies a limited manufacturing company, so the exact legal and operating classification is inconsistent.

CertificationsThe supplier explicitly reports ISO9001:2015 and ISO14001:2015 certifications, and also describes a formally enforced quality management system. This provides direct evidence of certified quality and environmental management systems.

R&D capabilityThe supplier reports dedicated R&D activity, 10 R&D engineers, advanced technology and testing equipment, development cooperation with materials and accessories manufacturers, and joint model development with BOSE, Thoman, and Proel. These details directly support meaningful product-development capability.

Production capacityEvidence supports in-house manufacturing of professional audio products, including a 7,500 m² plant, 98 employees, advanced production equipment, testing apparatus, and a broad product range. The supplier also describes established quality-control processes, indicating a substantive production operation.

Client casesThe supplier explicitly states that it cooperated with BOSE, Thoman, and Proel on new-model development, and reports positive feedback from local and overseas customers regarding stable quality, reliability, and consistency. These are direct customer-related references, although the records do not provide project details, dates, or independently verified case documentation.