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HSChapter 85
U.S. imports of audio-frequency electric amplifiers (HS 851840) totaled $89.8M in April 2026, traded with 58 countries.
Importers of Audio-Frequency Electric Amplifiers paid $4.5M in duties in April 2026 — an effective duty rate of 15% on $30.5M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataMexico leads US imports of audio-frequency electric amplifiers, reflecting deep integration of North American electronics manufacturing under USMCA, with China and Thailand as significant secondary sources. The heading divides into amplifiers used as repeaters in line telephony (8518401000) — a narrowly defined telecom application — and all other audio-frequency amplifiers (8518402000), which captures the far broader commercial market including home audio, professional sound reinforcement, and automotive applications. Correct line selection between these two tariff lines matters because the telephony-repeater subheading carries distinct duty treatment. Goods from China in this heading may be subject to Section 301 tariffs, a cost factor that has reinforced Mexico's supply-chain prominence.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
8518401000 covers amplifiers specifically designed to boost signal strength within wire-based telephone transmission systems — a technical telecom function. General-purpose audio amplifiers for home stereo, professional PA systems, or automotive use do not meet this definition and classify under 8518402000. Importers should have technical specifications confirming the telephony-repeater function before using the narrower tariff line.
Audio-frequency amplifiers that meet USMCA rules of origin — including applicable tariff-shift and regional-value-content requirements — may qualify for preferential duty treatment. Given that Mexico is the leading supplier under this heading, many importers actively structure their supply chains to satisfy USMCA origin criteria. A licensed customs broker should verify that specific assembly processes and component sourcing meet the applicable rule.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $56.2M | $9.1M | -$47.1M |
| KOREA, SOUTH | $3.0M | $6.0M | +$3.1M |
| NETHERLANDS | -- | $8.6M | +$8.6M |
| CANADA | $1.2M | $5.4M | +$4.2M |
| JAPAN | $1.2M | $5.2M | +$4.0M |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8518402000 | AUDIO FREQUENCY ELECTRIC AMPLIFIERS, NESOI | $89.7M | 14.74% | $4.5M |
| 8518401000 | AUDIO FREQ. AMPS USED AS REPEATERS IN LINE TELPHNY | $98K | 21.55% | $7K |
AUDIO FREQUENCY ELECTRIC AMPLIFIERS, NESOI
AUDIO FREQ. AMPS USED AS REPEATERS IN LINE TELPHNY
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8518402000 | AUDIO FREQUENCY ELECTRIC AMPLIFIERS, NESOI | $35.7M |
| 8518401000 | AUDIO FREQ. AMPS USED AS REPEATERS IN LINE TELPHNY | $9.2M |
AUDIO FREQUENCY ELECTRIC AMPLIFIERS, NESOI
192.5K no
AUDIO FREQ. AMPS USED AS REPEATERS IN LINE TELPHNY
10.0K no
MACH FOR RECP/CONVR/TRANS/REGN OF VOICE/IMAGE/DATA
HS 851762
SOLID-STATE NON-VOL SEMICONDUCTOR STORAGE DEVICES
HS 852351
SMARTPHONES
HS 851713
PROCESSORS AND CONTROLLERS, ELECTRONIC INTEG CIRCT
HS 854231
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V
HS 853710
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $34.9M | $26.0M | -$8.9M |
| Texas | $21.2M | $3.1M | -$18.1M |
| Michigan | $5.3M | $2.7M | -$2.6M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $23.3M | $5.7M | -$17.6M |
| OTAY MESA, CA | $23.6M | $1.5M | -$22.1M |
| LOS ANGELES, CA | $11.3M | $5.8M | -$5.4M |