Audio-frequency electric amplifiers
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 > Audio-frequency electric amplifiers > Audio-frequency electric amplifiers
Duty Rate (from China)
Products classified under Tariff item 8518.40.00.00
4-Wire Telephony Repeater
A dual-channel audio-frequency repeater designed for 4-wire telephony circuits, providing independent transmit and receive amplification with hybrid balance. It is used in microwave radio backhaul audio channels to maintain signal integrity over long distances.
8518.40.00Analog Telephone Line Extender Repeater
A wall-mountable audio-frequency repeater for analog telephone lines, compensating for signal loss over distances exceeding 5 km. It features automatic gain control optimized for POTS signaling to maintain voice quality.
8518.40.00ART SLA-2 Studio Linear Amplifier
A 2-channel 100W studio monitor amplifier designed for accurate music reproduction in recording environments. It provides high-fidelity audio amplification for professional studio monitoring applications.
8518.40.00Ashly Audio FTA-4201 Four-Channel Amplifier
A four-channel 100W per channel amplifier for multi-zone commercial audio installations. It provides distributed audio amplification for background music and paging systems in commercial settings.
8518.40.00Behringer NX1000 Ultra-Lightweight Amplifier
A Class-D power amplifier providing 1600W at 4 ohms for portable sound systems. It is optimized for weight-sensitive applications where high power output and portability are required.
8518.40.00Behringer Xenyx Q802USB Audio Mixer Amplifier
A compact 8-input audio mixer with a built-in audio-frequency electric amplifier for live sound reinforcement and studio recording. It combines mixing and amplification functions in a single unit.
8518.40.00Bose PowerMatch PM8500N Amplifier
An 8-channel configurable 8000W network power amplifier for installed sound systems. It provides sophisticated audio-frequency amplification with networking capabilities for professional installations.
8518.40.00CO/RT Hybrid Audio Repeater
An outdoor-rated repeater for central office to remote terminal audio links in hybrid fiber-coax telephony. It amplifies voice-frequency signals after opto-electronic conversion, ensuring clear audio over the copper drop.
8518.40.00DSL Line Signal Repeater
A compact audio-frequency amplifier used as a repeater in DSL telephony lines to extend reach by regenerating signals in the voice frequency band. It is deployed in telecom cabinets for xDSL services while maintaining POTS compatibility.
8518.40.00E&M Audio Interface Repeater
An audio-frequency repeater with E&M signaling interface for PBX trunk lines, amplifying 4-wire audio paths in telephony interconnects. It is essential for legacy TDM voice systems to maintain signal levels.
8518.40.00POTS Line Amplifier Repeater
A DIN-rail mountable audio-frequency repeater for Plain Old Telephone Service (POTS) lines, providing 20 dB gain for overcoming bridge tap losses. It is designed for telecom enclosure deployment.
8518.40.00Subscriber Loop Audio Repeater
A shelf-mounted repeater for subscriber loops in telephony, amplifying audio-frequency signals between central office and customer premises. It supports both voice and low-speed dial-up modem signals.
8518.40.00T1 Line Repeater Amplifier
A rack-mounted 1U audio-frequency amplifier serving as a repeater for T1 carrier telephony lines, regenerating 1.544 Mbps signals while preserving voice channels. It is used in central office repeater shelves for long-haul telephony.
8518.40.00Telephony Line Repeater Amplifier
An audio-frequency electric amplifier specifically designed for use as a repeater in line telephony systems, boosting analog signals over long copper wire distances to prevent degradation. It operates within standard voice frequency bands.
8518.40.00Voice Frequency Repeater Shelf
A 19-inch rack shelf housing multiple audio-frequency repeater cards for line telephony, providing centralized amplification for 48 subscriber lines. It is telco-grade with hot-swap capability.