We Don't Just Make Earphones. We Tune Them.
Your trusted partner for premium ODM/OEM earphone solutions. From acoustic simulation to global certification, we provide the technical infrastructure to bring your sonic vision to reality.
Production Facilities Built for Volume
Vertically integrated manufacturing with the scale to support global brands and the discipline to protect every unit's quality.
Acoustic Tuning: Our Real Advantage
Any factory can assemble a driver into a shell. What earns repeat orders is tuning — and that is where most suppliers stop investing. We did not.
B&K 4128 & AP2722 Measurement Infrastructure
We invest in professional-grade acoustic measurement — the B&K 4128 artificial head and ear simulator replicates human ear-canal geometry with clinical precision, while the AP2722 analyzer runs full frequency-response, THD, IMD and noise-floor characterization on every new product. Not spot checks. Full sweeps.
Tuning Decisions Are Data-Backed
Most suppliers send samples to third-party labs, adding time and a layer of separation between measurement and tuning. We do it in-house — faster iteration, tighter control, and frequency-response data delivered with your samples, not just a listening impression.
Japan
Neutral-analytical. Clean treble, tight fast bass decay.
Korea
Slight midrange lift, clear upper-mids, vocal clarity.
EU / US
Flat reference target, wide staging, minimal DSP.
Gaming / Type-C
Boosted upper-mids for directional clarity, low fatigue.
ISO 9001:2015 Quality Assurance Framework
Quality is not inspection at the end of the line — it is a system running from component sourcing through every production stage. Actual defect rates run 0.3–0.5%.
Incoming Quality Control
Every batch of materials inspected before production. Reject rate tracked per supplier.
In-Process QC
SPC applied at SMT, soldering, acoustic and functional testing stages.
Automated Optical Inspection
Every PCBA batch undergoes AOI and functional testing for signal integrity.
100% Functional Test
Audio and pairing verification on every unit, maintaining a 0.3–0.5% defect rate.
Global Export Certification Support
We manage certification as part of product development — identifying required marks before development, locking the BOM, and delivering audit-ready documentation.