In the consumer electronics industry, product iterations are typically measured in months or even weeks. However, at the R&D center of Shenzhen Lirinxin Technology, time is often marked in a different way: the 47th revision of an audio solution, the 209th consecutive hour of testing of a set of key data, or a two-week intense debate aimed at reducing harmonic distortion by 0.1%. Here flows a gene that is contrary to "fast fashion" - "punctuality". 

"Being meticulous" is the never-extinguished light in the laboratory at night. 
Entering the acoustics laboratory of Sound Science, one often encounters perplexing scenes: engineers gather around a pair of headphones, repeatedly playing the same short segment of specific drum beats (less than 10 seconds). Each person's eyebrows are tightly knitted, capturing the slightest differences in each vibration. "Users may never be able to detect this 0.5 decibel change in sound pressure, but we know it exists," said Senior Acoustics Engineer Mr. Chen. For this 0.5 decibel optimization, the team may have rejected three mature filtering schemes. 
This "meticulousness" permeates every aspect. In the reliability laboratory, the headphones undergo extreme temperature cycles ranging from -20°C to 60°C, numerous times of plugging and unplugging, and simulated corrosion immersion with sweat. "The market won't give us a second chance." The test supervisor pointed at the numerous samples on the test table, "Any anomaly in a set of data means that the design needs to be reworked. The data we have measured is enough to fill several hard drives, but these are the 'hard costs' that must be paid before the product goes to market." 

"Being meticulous" refers to the "unreasonable" arguments that occur at cross-departmental meetings. 
The "picky" culture is not only present in the quietness of the laboratory, but also reflected in the "battles" of the meeting rooms. At key project milestones, the joint review meetings of the R&D, design and production departments often resemble a debating arena. 
Industrial designers' pursuit of the most exquisite appearance lines may have compressed the optimal space for the acoustic cavity. 
The R&D engineer insisted on using more complex circuits to enhance the signal-to-noise ratio, but this might have posed a challenge to the manufacturability for mass production. 
The purchasing engineer argued forcefully for cost control and supply chain security... 
"Slamming the table is a common occurrence," a project manager confessed. "But what everyone is 'competing' over is not personal gains or losses, but the 'truth' of the final product experience. In the end, what is compromised is often the makeshift solution that 'sufficient is good enough'; while what is agreed upon is undoubtedly the best but most difficult solution." It is precisely this kind of "argument" based on expertise and data that enables wild and imaginative ideas to eventually become solid and reliable engineering realities. 

The reward for being meticulous: From "satisfactory responses" to "legendary reputation" 
This "meticulous" effort has delivered much more than just a satisfactory market report. In 2025, an open-source headset developed by this team, due to its almost "unusual" clear call noise reduction capability in complex environments, received annual recommendations from multiple technology media. The disassembly report shows that its interior adopts a unique dual-microphone beamforming and wind noise suppression composite structure, which is the result of 11 versions of algorithm reconfiguration and over 200 sets of environmental noise sample tests. 
"The market is the ultimate judge," the R&D director concluded. "Users' ears may not be able to articulate technical parameters, but they can immediately distinguish between 'comfortable' and 'harsh', 'clear' and 'blurry'. All the painstaking efforts we have made to be meticulous are aimed at enabling users to feel that intangible, intuitive 'satisfaction' the moment they open the package and put on the headphones." 

In this city renowned for its "Shenzhen speed", the R&D team of Soundco chose a more cumbersome and slower path: through endless iterations of plans and the accumulation of monotonous data, they fought against the impatience of the industry. This "punctuality" is their love letter to product quality and a silent but solemn commitment to all unknown users. When each pair of headphones is turned on, the clear and stable sound is the best echo of this commitment.