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  2. sku: 7048374716461604
  3. TUNGSOL OTHER 6550A

TUNGSOL OTHER Nos Audio Tubes 6550/KT88

6550a Tungsol & Other 8 Nos To Strong And 6550/kt88 Audio Tubes

( Brand: Tungsol Other ), ( Manufacturer Part Number: 6550A ), ( Model: 6550 6550A KT88 ), ( Part Type: Tube ), ( Country/region Of Manufacture: United States )

Review TUNGSOL OTHER Nos To Strong And 6550/kt88 Audio Tubes

Introducing the Tung-Sol 6550A NOS (New Old Stock) 6550/KT88 audio tubes, a high-performance solution for audiophiles seeking an authentic and rich sound experience. These tubes are a direct reproduction of the original 1950s design, ensuring a vintage feel with modern reliability.

The Tung-Sol 6550A NOS tubes come as a matched quad, meaning that all four tubes have been carefully selected and tested to provide optimal performance and consistency. Each tube is individually inspected and vacuum-tested to ensure they meet Tung-Sol's rigorous quality standards.

The Tung-Sol 6550A NOS tubes are designed for use in power amplifier applications, particularly for high-power triode-connected push-pull designs. They feature a fixed bias configuration, which simplifies setup and operation. These tubes offer a warm and rich sound with a wide frequency response, making them an excellent choice for music enthusiasts who value the nuances and subtleties of their favorite recordings.

The Tung-Sol 6550A NOS tubes are encased in clear glass tubes, allowing users to admire their classic design. They measure approximately 10.5 inches long, 3.8 inches wide, and 3.5 inches tall, making them a striking addition to any audio setup. The tubes are also equipped with sturdy metal bases, ensuring a stable and secure fit in amplifiers.

These tubes are not only visually appealing but also offer superior electrical performance. They have a plate voltage range of 300-400V DC and a plate current capacity of 150mA. They also feature a high mu value, which allows for efficient amplification of weak signals.

Investing in Tung-Sol 6550A NOS 6550/KT88 audio tubes is an investment in authentic sound and durability. These tubes offer a vintage aesthetic with modern performance, making them a popular choice for audiophiles seeking a unique and memorable listening experience.

Tungsol 6550A NOS (New Old Stock) tubes, specifically the 6550/KT88 variants, are popular choices for audio applications due to their reputation for high-quality sound and long-lasting performance. However, like any electronic component, they come with their own set of advantages and disadvantages.

Advantages of Buying Tungsol 6550A NOS Tubes:

1. Superior Sound Quality: Tungsol 6550A NOS tubes are known for their rich, warm, and detailed sound. They offer a more natural and dynamic sound compared to modern tubes.

2. Longer Lifespan: NOS tubes are often considered to have a longer lifespan compared to new tubes due to their age and the fact that they were manufactured under older production methods, which may have resulted in higher quality control.

3. Collectible Value: NOS tubes, especially those from reputable manufacturers like Tungsol, are highly sought after by audio enthusiasts and collectors. This can add to their value and make them a worthwhile investment.

Disadvantages of Buying Tungsol 6550A NOS Tubes:

1. Limited Availability: NOS tubes are no longer in production and their availability is limited. This can make them more expensive and harder to find compared to new tubes.

2. Higher Cost: Due to their collectible value and limited availability, NOS tubes tend to be more expensive than new tubes.

3. Higher Risk of Failure: Older tubes, like NOS tubes, may have a higher risk of failure compared to new tubes, especially if they have not been properly stored or maintained.

Conclusion:

Tungsol 6550A NOS tubes offer superior sound quality, longer lifespan, and collectible value, making them an attractive option for audio enthusiasts. However, their limited availability, higher cost, and higher risk of failure are important considerations. Ultimately, the decision to buy Tungsol 6550A NOS tubes depends on your audio preferences, budget, and willingness to take on the risk of using older components.

Recommendation:

If you are an audio enthusiast with a significant budget and a preference for the rich, warm, and detailed sound that NOS tubes offer, then Tungsol 6550A NOS tubes are a worthwhile investment. However, if you are on a tighter budget or prefer the reliability and lower cost of new tubes, then you may want to consider alternative options. It's important to thoroughly research and evaluate the specific tubes you are considering to ensure that they meet your audio needs and expectations.

Details:

part #: 6550a prices

  • $125.00-$430.00

specifications vintaelec:

  • brand: Tungsol Other
  • mpn: 6550a
  • model: 6550 6550a Kt88
  • part type: Tube
  • country/region of manufacture: United States

general vintaelec:

  • Consumer Electronics > Vintage Electronics > Other Vintage Electronics
  • condition: Used

payments vintaelec:

  • wallet: Paypal
  • Other
  • credit card: Mastercard

returns vintaelec:

  • paid by: Buyer
  • method: Money back
  • time: 30 Days
  • policy: Returns Accepted

seller vintaelec:

  • city: Salem, Oregon
  • rating: 100.0%
  • # reviews: 9962

offer vintaelec:

  • started: August 26, 2025
  • availability: In Stock
  • options: Ship-to-home
  • quantity: 1
  • sold: 0

shipping vintaelec:

  • type: Calculated
  • carrier: USPS
  • service: USPS Priority Mail
  • transit: 3-8 Days
  • cost: $18.55
  • class: Expedited
part type: tube, country/region of manufacture: united states,
category: electronics > vintage electronics, sku: 7048374716461604,
Tungsol Other 6550A Is Similar To:
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5 offers $125.00–$430.00 USD
  • Used. Offer #1 priced at $125.00 + $9.45 shipping estimate = $134.45* total. Minimum good is 3900. This one tests good and has strong getter flash and good printing.+$9.45 shipping
  • New. Offer #2 priced at $430.00 + $28.85 shipping estimate = $458.85* total. A pair of KT120 can allow an amplifier with a power output approaching 120 watts to be built. With a massive plate dissipation of 66 watts, the Tung-Sol KT120 is one of the most powerful octal beam tetrode ever produced.+$28.85 shipping
  • Used. Offer #3 priced at $199.99 + $15.00 shipping estimate = $214.99* total. However, the difference between the highest and lowest plate current was 7mA, so I do not consider any of these matching pairs. The pictures show the 3 available pieces.+$15.00 shipping
  • Used. Offer #4 priced at $222.00 + $10.00 shipping estimate = $232.00* total. emissions 86% and gm 87%. Tube tested from :Amplitrex AT1000.+$10.00 shipping
  • Used. Offer #5 priced at $349.00 + $12.00 shipping estimate = $361.00* total. Tube 1 : 107% Emis 106% GM. Tube 2 : 97% Emis 89% GM.+$12.00 shipping

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