12AX7/ECC83 Dual Triode Tube from China
The 12AX7 (ECC83) is a miniature dual triode vacuum tube widely used as a low-noise preamplifier in guitar amplifiers, studio preamps, and vintage radio receivers. Its high gain and low microphonics make it ideal for audio signal amplification. Falls under HTS 8540.81.00.00 as a classic receiver/amplifier thermionic tube.
Duty Rate — China → United States
41.7%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Require manufacturer test data showing mu factor and gain characteristics typical of amplifier tubes
• Label with exact electrical specs to prevent confusion with power tubes
• Obtain FCC compliance if marketed for broadcast receivers