PCBA Images

About TECircuit

Found: TECircuit has been operating since 2004.

Location: An electronics manufacturing service(EMS) provider located in Shenzhen China.

Item: Customizable EMS PCB, offers a full range of one-stop shop services.

Service: Printed Circuit Board (PCB)and Printed Circuit Board Assembly(PCBA), Flexible Printed Circuit Board(FPC), Components Sourcing, Box-Building, Testing.

Quality Assurance: UL,ISO 9001, ISO 14001, ISO 13485, ITAF 16949 andcomplied with ROHS and REACH.

Factory Pictures:
Company's own plant : 50,000 sqm; Employees : 930+; Monthly production capacity : 100,000 m2

PCBA Applications

• High-Impedance Headphone Driving: The PCBA provides sufficient voltage swing and current output to properly drive high-impedance studio and audiophile headphones that cannot be adequately powered by standard consumer audio ports.

• Professional Audio Monitoring: Used in recording studios and broadcasting environments where the PCBA delivers clean, uncolored amplification for accurate audio monitoring and critical listening sessions.

• Portable Audio Enhancement: Serves as an external audio processing unit for smartphones, DAPs, and laptops, bypassing their built-in amplifiers to significantly improve sound quality and dynamic range.

• Multi-Device Audio Switching: The PCBA can integrate input switching circuitry to function as a central audio hub, allowing users to connect and switch between multiple audio sources while maintaining amplified output.

• DAC Integration Platform: Often combines with high-quality Digital-to-Analog Converters (DACs) on the same board to create complete audio solutions that improve both signal conversion and amplification stages.

• Tube Amplification Implementation: In specialized designs, the PCBA accommodates vacuum tube circuits with necessary high-voltage power supplies, providing the warm harmonic distortion characteristic sought by audio enthusiasts.

• Balanced Audio Output: Supports balanced headphone connections through separate amplification channels for each phase, effectively rejecting common-mode noise and improving signal integrity.

PCBA Features

1. High-Performance Op-Amps/Discrete Amplification Circuitry: The PCBA incorporates either precision operational amplifiers or discrete transistor-based amplification stages, selected for low distortion, wide bandwidth, and excellent slew rate characteristics.

2. Multi-Stage Power Supply Regulation: Employs sophisticated power conditioning with separate regulators for analog and digital sections, along with extensive filtering to prevent noise from power circuits from affecting the audio signal path.

3. Advanced Volume Control Implementation: Features either high-quality analog potentiometers or digital volume control ICs with precise stepped attenuators, ensuring accurate channel balance and minimal signal degradation at all listening levels.

4. Impedance Matching and Gain Switching: Includes either fixed or switchable gain settings and output impedance optimization to properly match different headphone types and sensitivity characteristics.

5. Comprehensive Connection Interfaces: Provides multiple input options (RCA, 3.5mm/XLR, USB) and output configurations (single-ended and balanced), with proper isolation between connectors to prevent ground loops.

6. Robust Protection Circuitry: Incorporates features such as DC offset protection, over-current protection, and turn-on/turn-off transient suppression to safeguard both the electronics and connected headphones.

7. Thermal Management System: Includes appropriately sized heat sinks and thermal vias in the PCB layout to dissipate heat from power transistors and voltage regulators, ensuring stable operation during extended use.

FAQ

​PCB & PCBA Description​

PCB Assembly OEM Service

Electronic Components Material Purchasing

Bare PCB Fabrication

Cable, Wire-harness Assembly, Sheet Metal, Electrical Cabinet Assembly Service

PCB Assembly Service: SMT, BGA, DIP

PCBA test: AOI, In-Circuit Test (ICT), Functioal Test (FCT)

Conformal Coating Service

Prototyping and Mass Production

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PCBA ODM service

PCB Layout, PCBA Design According To Your Idea

PCBA Copy/Clone

Digital Circuit Design / Analog Circuit Design/ lRF Design /Embedded Software Design

Firmware and Microcode Programming Windows Application (GUI) Programming/Windows Device Driver (WDM) Programming

Embedded User Interface Design / lSystem Hardware Design

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