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Brand new Fire Crew Russia Mullard 12AX7 ECC83 Vacuum Tube Upgrade B759 ECC83S CV4004 E83CC 7025 ECC803 5751 12AX7B 6N4 for HIFI Audio Valve Electronic Tube Amplifier Kit DIY Factory Genuine Precision Tested and Matched Quad

In a series of retro famous tube plans, NEW SENSOR Group of the United States, of course, also locked in this dream Mullard famous tube. After obtaining the same manufacturing process and design as the original product line, the company moved to St. Petersburg, Russia, and successfully reproduced Mullard EL34, 12AX7, EL84 and other classic famous pipes with local high-quality engineering manpower and advanced old OTK technical support.

All new reproductions adhere to the requirements of showing the characteristics of the old tube in the original. The vacuum treatment and internal metal materials, as well as the material and thickness of the glass bottle body, and even the solder proportion of the foot, are carried out according to the technical manual of the original tube. The new century's factory management and more rigorous testing also make the reproduction more reliable and complete. Even the packaging is completely in accordance with the printing, and the texture is very good.

Sound quality is the most concerned topic of enthusiasts. After verification of electrical characteristics and durability by the original manufacturer, compared with the old pipe, the original strength and sound thickness are not bad at all, while the new pipe even has a very extended high frequency, full of air, compared with the old pipe.

The shop promises:

The electronic tubes operated by our store are guaranteed to be brand new and high-quality genuine products from the original factory, and we will provide free replacements for any quality problems within one year. All tubes are rigorously tested to match .Buy 2pcs = Precision matched pair. Buy 4pcs = Precision Matched Quad. We have the conditions and advantages to match multiple tubes (four tubes, eight tubes) according to customer needs. The same parameters. It is a professional shockproof and firm package. It is absolutely safe.

Note: It will be shipped after strict inspection again (please do not think it is a fake and shoddy product after receiving the tube).