Frequently Asked Questions
Find Answers to Common Questions About Our Products and Services
General Questions
MARQUESS Electronics was established in July 1998 as a joint venture with Japan’s Aoi Electronics Co., Ltd. We have over 25 years of experience in professional microphone manufacturing, serving customers worldwide including Japan, Hong Kong, Europe, America, and South Korea.
Our production equipment and technical processes are imported from Japan, and we operate in Class 10,000 cleanrooms to ensure product quality and consistency.
We maintain comprehensive international certifications including:
- ISO 9001:2015 – Quality Management System
- ISO 14001:2015 – Environmental Management System
- ISO 45001:2018 – Occupational Health and Safety
- UL Certification – Product Safety Certification
- SGS Certification – Independent Testing and Compliance
Our standard minimum order quantities are:
- Standard Products: 1,000 pieces per model
- Custom Designs: 10,000 pieces for new developments
- Samples: We provide evaluation samples for qualified projects (typically 5-10 pieces)
For established customers or high-volume projects, we can be flexible with MOQ requirements.
Our standard lead times are:
- Standard Products: 2-4 weeks
- Custom Products: 4-8 weeks (depending on complexity)
- Rush Orders: Expedited production available for urgent requirements
Lead times may vary based on order quantity, product complexity, and current production capacity.
Yes, we provide free evaluation samples for qualified projects. Our sample policy includes:
- Free samples for serious evaluation projects (customer pays shipping)
- Typically 5-10 pieces per model for evaluation
- Quick turnaround – samples usually ship within 3-5 business days
- Technical support available during your evaluation process
Electret Microphones:
- Use permanently charged dielectric material
- Offer excellent performance at lower cost
- Larger form factors available
- 25+ years of manufacturing experience
- Good mechanical stability
MEMS Microphones:
- Use micro-electrical-mechanical systems
- Extremely compact, surface-mount packages
- Excellent temperature stability and robustness
- Better resistance to vibration and shock
- Digital output options available
Our microphones cover sensitivity from -28 dB to -58 dB. We offer different tolerance levels:
- Standard Tolerance: ±2 dB
- High Precision: ±1 dB available for critical applications
- Internal Control: We control to ±1.5 dB internally to ensure quality
We implement 18 rigorous quality inspection procedures throughout our manufacturing process:
- Raw material inspection and verification
- First article inspection before mass production
- In-process quality control monitoring
- Acoustic performance testing using B&K analyzers
- Environmental testing (temperature, humidity, vibration)
- ESD protection testing
- Final product testing and validation
- Continuous improvement initiatives
Yes, we specialize in custom microphone solutions. Our customization capabilities include:
- Electrical Specifications: Custom sensitivity, frequency response, and impedance
- Mechanical Design: Custom housing dimensions, connector types, and mounting options
- Performance Optimization: Tailored for specific acoustic environments
- Environmental Specifications: Enhanced temperature range, humidity resistance
- Packaging: Custom reel packaging and tape specifications
The minimum order quantity for custom developments is typically 10,000 pieces.
We provide comprehensive technical support including:
- Application-specific product recommendations
- PCB layout guidance and review
- Acoustic design consultation
- Integration troubleshooting
- Custom solution development
- Documentation and technical guides
Our engineering team has 25+ years of experience in microphone design and application.
We stand behind the quality of our products with:
- Standard Warranty: 12 months from date of shipment
- Quality Commitment: We maintain ±1.5 dB internal control to ensure all shipments meet ±2 dB standard
- Technical Support: Ongoing application support throughout product lifecycle
- Reliability: Products designed and tested for long-term performance
Still have questions?
Can’t find the answer you’re looking for? Contact our team directly for personalized assistance.