Boundary Layer Microphone Preamplifier PCA from Canada
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 — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Specify 'boundary layer' design in commercial invoice for proper subheading linkage
• Include phantom power circuit diagrams to validate professional mic compatibility