Parts
Microphones and stands therefor; loudspeakers, whether or not mounted in their enclosures; headphones and earphones, whether or not combined with a microphone, and sets consisting of a microphone and one or more loudspeakers; audio-frequency electric amplifiers; electric sound amplifier sets. > Loudspeakers, whether or not mounted in their enclosures: > Headphones and earphones, whether or not combined with a microphone, and sets consisting of a microphone and one or more loudspeakers > Parts > Parts
Duty Rate (from China)
Products classified under Tariff item 8518.90.00.00
Adtran Channel Bank Repeater Module
A line repeater module designed for Adtran channel banks, containing SLIC, framer, and jitter attenuation circuits. It is a part specifically for audio-frequency electric amplifiers used in telecommunications, falling under the parts provision of this tariff item.
8518.90.00Analog Repeater Voice Frequency Filter Module
A module containing band-pass filters and microphone interface circuits for analog line repeaters. It is a part of audio-frequency electric amplifiers used in telecommunications, classified under the parts provision of this tariff item.
8518.90.00Boundary Layer Microphone Preamplifier PCA
A low-profile printed circuit assembly for boundary layer microphones used in conference tables. It provides phase-coherent amplification from surface-mounted capsules, serving as a part of microphones.
8518.90.00Conference Microphone Array Signal Processor PCA
A multi-channel printed circuit assembly with beamforming DSP for ceiling-mounted conference microphone arrays. It processes multiple mic capsules into clear audio pickup, serving as a part of microphones.
8518.90.00Digital Modeling Microphone Processing Board
An advanced DSP printed circuit assembly for digitally modeling microphones emulating classic patterns. It processes multiple capsules on a single board, serving as a part of microphones.
8518.90.00Line Repeater Signal Conditioning Board
A printed circuit board assembly with microphone preamplifiers for analog telephone line repeaters. It conditions low-level audio pickup signals for transmission over copper lines, serving as a part of audio-frequency electric amplifiers.
8518.90.00Microphone Preamp Printed Circuit Board
A printed circuit assembly containing amplification circuitry specifically designed for professional condenser microphones. It processes low-level audio signals from the microphone capsule, serving as a part of microphones.
8518.90.00Professional Earset Microphone Amplifier Board
A printed circuit assembly for headworn earset microphones used in broadcasting and theater. It contains close-talking mic preamp and beltpack amplifier circuitry, serving as a part of microphones.
8518.90.00Repeater Bus Interface Circuit Board
A digital signal processing board for line repeaters, providing equalization, gain control, and impedance matching. It is a part of audio-frequency electric amplifiers used in telecommunications, classified under the parts provision of this tariff item.
8518.90.00Repeater Station Microphone Pre-Amplifier
A low-noise pre-amplifier circuit board for microphone signals in analog telephone repeater stations. It provides initial gain before main repeater amplification stages, serving as a part of audio-frequency electric amplifiers.
8518.90.00Ribbon Microphone Signal Conditioning PCA
A specialized low-noise printed circuit assembly for passive ribbon microphones requiring high-ratio transformers and amplification. It restores delicate ribbon output to line level, serving as a part of microphones.
8518.90.00Telephone Repeater Audio Input Module
An audio input module serving as the microphone interface for analog telephone line repeaters. It amplifies and conditions weak voice signals in long-distance analog repeater stations, functioning as a part of audio-frequency electric amplifiers.
8518.90.00Telephone Repeater Rackmount Audio Interface
A rackmount interface panel with microphone inputs for central office analog repeaters. It provides multiple channel capability for trunk line applications, serving as a part of audio-frequency electric amplifiers.
8518.90.00Tellabs Line Repeater Amplifier Board
A universal line repeater PCB for Tellabs universal shelf systems with automatic gain control and pulse shape correction. It is a part of audio-frequency electric amplifiers used in telecommunications, falling under the parts provision of this tariff item.