Boundary Layer Microphone Preamplifier PCA
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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for single voice communication mics with computer interface
Consumer webcam/computer mics use different microphone subheading.
If designed for loudspeaker systems rather than microphones
Residual parts provision for other audio-frequency apparatus.
If specialized for medical diagnostic recording
Medical instruments parts classified by end-use in Chapter 90.
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Import Tips & Compliance
• Specify 'boundary layer' design in commercial invoice for proper subheading linkage
• Include phantom power circuit diagrams to validate professional mic compatibility
Related Products under HTS 8518.90.60.00
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