Boundary Layer Microphone Preamplifier PCA from Mexico
Low-profile printed circuit assembly for boundary layer (PQ) microphones used in conference tables, classified under 8518.10.40. Provides phase-coherent amplification from surface-mounted capsules. PCA of specified professional mics.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify 'boundary layer' design in commercial invoice for proper subheading linkage
• Include phantom power circuit diagrams to validate professional mic compatibility