MULLARD 3900UMHOS Audio Tube 7.7MA 7.6 12AT7 4000 ECC81

( Brand: Mullard ), ( Part Type: Tube )

Review MULLARD Vintage 4000 Audio Tube 7.6

The 12AT7 Mullard audio tube, with a model number 4000 and 3900umhos, is a highly sought-after vintage component in the world of audio electronics. This tube, manufactured by Mullard, a renowned brand in the industry, is a dual triode vacuum tube. The 12AT7 is a versatile tube, often used as a preamp vacuum tube, due to its wide frequency response and low noise characteristics.

This particular 12AT7 tube, model 4000, has a heater voltage of 12.6 volts, and a plate voltage of 300 volts. It has a plate current of 7.6 to 7.7 milliamperes, and an operating power of 3900 micro-watts. The 12AT7 is known for its ability to deliver a rich, warm sound, with a smooth and natural tone.

The Mullard 12AT7 4000 tube is built with precision and care, using high-quality materials to ensure durability and reliability. The tube's glass envelope is coated with a special mixture of metals to reduce internal noise, and the internal components are meticulously aligned to ensure optimal performance.

The 12AT7 4000 is a must-have for audiophiles and vintage audio enthusiasts. It is capable of delivering a sound quality that modern solid-state components simply cannot match, and it adds a unique character and warmth to any audio system. Whether you're building a vintage radio, a high-end preamp, or just looking to add some vintage charm to your audio setup, the Mullard 12AT7 4000 is a tube that should not be overlooked.

1. High-quality construction: Mullard is a renowned brand known for its high-quality tubes. The 12AT7 is no exception, offering excellent craftsmanship and reliability.

2. Wide range of applications: This tube can be used in various audio applications, such as preamplifiers, power amplifiers, and mixing consoles. Its versatility makes it a popular choice among audiophiles and audio professionals.

3. Good power handling: The 12AT7 has a high power rating of 3900 H, which allows it to handle a reasonable amount of power without overheating or failing.

4. Warm sound: The tube's design provides a rich, warm, and analog sound, which many prefer over the cold, digital sound of solid-state electronics.

1. Higher cost: Tubes generally cost more than solid-state components, and the Mullard 12AT7 is no exception. If you're on a tight budget, you may want to consider less expensive options.

2. Maintenance and longevity: Tubes require regular maintenance to ensure proper operation, including regular cleaning and replacing of filaments. They also have a shorter lifespan than solid-state components, which can be a drawback for some users.

3. Limited availability: High-quality tubes like the Mullard 12AT7 are not as widely available as solid-state components, which can make it more challenging to find replacement parts or repair services.

Conclusion: The Mullard 12AT7 ECC81 is a high-quality tube that offers a warm and rich sound, making it an excellent choice for audio applications where a tube's unique characteristics are desirable. However, its higher cost, maintenance requirements, and limited availability are factors to consider before making a purchase. If you're willing to invest in a high-quality tube and maintain it properly, the Mullard 12AT7 can be a great addition to your audio setup. If budget or convenience are more important, you may want to consider other options.

Details:

This tester uses regulated power sources for the bias, plate, screen voltage s, as well as modified operating testing procedures. Tubes can be accurately matched for gm plate current at the manufacturer's specified test points or at other specified test points. Filament voltage is also controlled.

Mullard 12AT7 tube tested on our proprietary tester, the e3444 it's a triplet 3444 west more 501 that has been enhanced.

part #: 3900umhos prices

• $25.00-$198.00

specifications tubesocketvintagego:

• brand: Mullard
• part type: Tube

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Shipping:

• cost: $6.0
• type: Flat
• handling: 1 days

Offer:

• Started: March 11, 2015, 8:19 am
• best offer: false
• quantity: 1
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General:

• Consumer Electronics > Vintage Electronics > Vintage Audio & Video > Vintage Parts & Accessories > Vintage Tubes & Tubes Sockets
• in stock: Yes

Ratings:

1. All good 03-11-15
2. Excellent seller, Very nice packing and fast shipping. Thanks! 03-11-15
3. GOOD SELLER. THANKS! 03-11-15

Returns:

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• time: 14 Days
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Seller:

• zipcode: 07747
• city: Matawan, New Jersey

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