UNITED 303-A Nos Power Amplifier Vacuum Tube

( Brand: United ), ( Model: TYPE 303-A ), ( Type: Rf Power Amplifier Tube ), ( Country/region Of Manufacture: United States )

Review UNITED Nos Type 303 Power Amplifier Vacuum Tube

The 303-A NOS (New Old Stock) United 303 Power Amplifier Vacuum Tube is a classic piece of audio engineering that harks back to the golden age of tube amplifiers. This vacuum tube is a direct descendant of the renowned 303A, a tube that was widely used in high-fidelity audio systems throughout the mid-20th century.

The 303-A NOS United 303 Power Amplifier Vacuum Tube is a dual triode design, meaning it uses two triode electron tubes in a single glass envelope. This design allows for a high power output, making it ideal for driving speakers in a wide range of audio applications, from vintage hi-fi systems to modern audio restoration projects.

The tube is made with high-quality materials and craftsmanship, ensuring excellent performance and longevity. The glass envelope is made from high-purity Borosilicate glass, which is known for its strength and resistance to thermal shock. The metal parts are made from high-purity materials, including nickel-plated brass, providing excellent electrical conductivity and durability.

The 303-A NOS United 303 Power Amplifier Vacuum Tube operates on a plate voltage of 6.3 volts, with a plate current of 1.2 amps, and a maximum power output of 25 watts. It has a low plate resistance of 140 ohms, which allows for efficient power transfer, and a high maximum plate dissipation of 25 watts, ensuring that it can handle high power loads without overheating.

The tube is designed to deliver a rich, warm, and detailed sound with excellent dynamic range and frequency response. It has a high input impedance of 100 kilohms, which allows it to drive a wide range of preamplifiers and sources, and a low output impedance of 2.5 ohms, which ensures that it can drive a wide range of speakers with ease.

In conclusion, the 303-A NOS United 303 Power Amplifier Vacuum Tube is a classic piece of audio engineering that delivers excellent performance and sound quality. Whether you're a vintage audio enthusiast, a hobbyist restoring old audio gear, or a professional audio engineer looking for high-quality components, this tube is a must-have in your collection.

1. Authenticity: New Old Stock (NOS) tubes are original, vintage tubes that have been stored for a long time and never used, ensuring that they are in their original condition.

2. Sound Quality: Vacuum tubes are known for their warm, rich sound, which can enhance the audio experience of vintage audio equipment.

3. Durability: NOS tubes are often more durable than new tubes, as they have not been subjected to the same manufacturing processes that can cause wear and tear.

4. Collectibility: Vacuum tubes are collectible items, and owning an NOS tube can be a fun hobby for audiophiles.

1. Expense: NOS tubes can be expensive, especially if they are rare or hard to find.

2. Availability: Some NOS tubes may be difficult to find, making it challenging to replace them if they burn out.

3. Compatibility: NOS tubes may not be compatible with modern audio equipment, as they may not meet the specifications required for modern electronics.

4. Maintenance: Vacuum tubes require more maintenance than solid-state amplifiers, as they need to be regularly checked and cleaned to ensure proper functioning.

Conclusion: The 303-A NOS United 303 Power Amplifier Vacuum Tube offers a unique audio experience with its warm, rich sound, but it comes with a higher cost and more maintenance requirements than modern solid-state amplifiers. If you are an audiophile who values vintage sound and collectibility, then the 303-A NOS United 303 Power Amplifier Vacuum Tube may be worth the investment. However, if you are looking for a reliable and low-maintenance amplifier, you may want to consider a modern solid-state amplifier instead.

Details:

No further testing has been done. Made in USA. Box deteriorated due to age and storage conditions. The tube filament is good.

This 6 pillar heavy black graphite plate tube is structurally sound, clear glass globe with two lower rectangle fetters. Nos United type 303-A power amplifier tube. Tube unaffected.

All internal parts are sound. Tube specs included. There is a minuscule shiver of glass loose inside the tube.

part #: 303-a prices

• $2999.00-$3433.68

specifications tubesocketvintagego:

• brand: United
• model: Type 303-a
• type: Rf Power Amplifier Tube
• country/region of manufacture: United States

Payments tubesocketvintagego:

• PayPal

General tubesocketvintagego:

• in stock: Yes
• consumer electronics > vintage electronics > vintage audio video parts accessories consumer electronics > vintage tubestubes sockets audio

Seller tubesocketvintagego:

• zipcode: 10463
• city: Bronx, New York

Shipping tubesocketvintagego:

• handling: 2 days
• cost: $6.18
• type: Flat

Returns tubesocketvintagego:

• type: Money Back
• policy: returns accepted
• paid by: Buyer
• time: 30 Days

Ratings:

1. your item is here, thanks. 05-12-17
2. Quick response and fast payment. Perfect! THANKS!! 05-27-17
3. got it: 04-06-17
4. Album as described. Thank 04-20-17
5. Top honors!! Excellent communication, fast Shipping! Thank you!! 05-10-17

Offer tubesocketvintagego:

• best offer: true
• Sold: 0
• bids: 0
• Started: May 31, 2017, 4:02 pm
• quantity: 1

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