Valve Preamp Heater Transformer
A 20VA custom-wound transformer for vacuum tube guitar amplifier heater circuits, featuring a center-tapped 6.3V filament winding. With a power handling capacity of 20VA, it falls under tariff item 8504.31.00 for transformers not exceeding 1kVA.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as part of a complete amplifier unit
When included with the amplifier, the transformer may be classified as a part of the amplifier under heading 8518.
If the transformer is an inductor rather than a standard transformer
Inductors, which store energy in a magnetic field, are classified under 8504.50, not 8504.31.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide technical specifications, such as VA rating and winding configuration, to customs brokers for accurate classification
• If the transformer is part of a guitar amplifier, confirm whether it should be classified separately or with the amplifier
• Keep invoices and product datasheets handy for CBSA verification
Related Products under Tariff item 8504.31.00
100VA Multi-Tap Buck-Boost Transformer
A 100VA multi-tap buck-boost transformer for voltage correction in commercial buildings, adjusting 208V to 240V for appliances. With a power handling capacity of 100VA, it falls under tariff item 8504.31.00 for transformers not exceeding 1kVA.
12V AC-DC Switching Power Supply 30W
A compact switching power supply converting 85-264VAC to 12VDC with 2.5A capacity, total power under 30W (0.03kVA). It falls under tariff item 8504.31.00 as a transformer with power handling capacity less than 1 kVA.
12V AC Wall Adapter Transformer
A compact step-down transformer rated at 15VA, converting 120V AC mains to 12V AC for low-voltage devices such as doorbells or small appliances. It features a wall-plug design and thermal protection. With power handling under 1 kVA, it is classified under 8504.31.00.
15V Laptop Power Adapter Brick 65W
An external switching power supply for laptops, converting 100-240VAC to 15VDC/4.3A (65W), under 1 kVA. It includes short-circuit and overvoltage protection.
24V DC-DC Step-Down Converter 50W
A DC-DC buck converter module transforming 36-60VDC input to 24VDC/2A output (50W), used in solar and automotive applications. It is under 1 kVA and classified under tariff item 8504.31.00.
24V Doorbell Transformer
A standard household doorbell transformer converting 120V AC to 24V AC with a 30VA capacity, featuring screw terminals for wiring. It is designed for low-voltage chime systems and is typically mounted on a junction box. As a transformer under 1 kVA, it falls under 8504.31.00.