TUNGSOL 421A Power Triode Audio Nos Amplifiers Otl

( Brand: Tungsol ), ( Manufacturer Part Number: 421A ), ( Country/region Of Manufacture: United States )

Review TUNGSOL Power Pair Triode Matched Audio Nos Amplifiers Otl

The Power Triode Tungsol 421A Audio NOS (New Old Stock) Amplifiers OTL, a masterpiece of vintage audio engineering, is a must-have for audiophiles seeking a truly authentic and captivating listening experience. This amplifier is equipped with Tungsol 421A power triodes, widely recognized for their rich, warm, and detailed sound.

The Power Triode Tungsol 421A Amplifiers OTL is a single-ended design, which means each channel has its own independent power supply. This design approach helps to minimize inter-channel crosstalk, resulting in a more natural and separated soundstage. The OTL (Output Transformer Less) configuration further contributes to the amplifier's transparency and musicality by eliminating the output transformer, allowing the unadulterated signal to pass directly to the speakers.

The amplifier's chassis is crafted from high-quality aluminum, providing excellent heat dissipation and a solid foundation for the delicate electronic components within. The power and output transformers are carefully selected and wound in-house, ensuring superior performance and reliability. The minimalist design, with its hand-wired point-to-point circuitry, further adds to the amplifier's aesthetic appeal and audiophile allure.

The Power Triode Tungsol 421A Audio NOS Amplifiers OTL can deliver up to 20 watts per channel into 8 ohms, making it an ideal match for high-sensitivity speakers. However, its true strength lies in its ability to reveal the subtlest nuances in music, offering an unparalleled listening experience that is both engaging and emotionally resonant.

In summary, the Power Triode Tungsol 421A Audio NOS Amplifiers OTL is a testament to the enduring art of vacuum tube design. Its unique combination of vintage Tungsol triodes, OTL configuration, and meticulous craftsmanship make it an exceptional choice for those seeking a truly immersive and captivating audio experience.

1. Tungsol 421A tubes are known for their warm and rich sound quality, which can enhance the listening experience for many music enthusiasts.

2. The all-tube design of the amplifier provides a natural and analog sound that some prefer over solid-state amplifiers.

3. The output transformerless (OTL) design of the amplifier can improve the speed and transparency of the sound, making it suitable for playing a wide range of music genres.

4. The hand-selected and tested NOS (new old stock) tubes ensure consistency in sound quality and reliability.

1. Tube amplifiers like the Tungsol 421A can be more expensive to maintain and repair than solid-state amplifiers, as they require regular tube replacement and alignment.

2. The amplifier may be less energy-efficient than solid-state alternatives, which can increase electricity costs over time.

3. The tube amplifier may be more sensitive to temperature changes and humidity, which can affect the sound quality and lifespan of the tubes.

4. Some users may find the tube amplifier to be less powerful than solid-state alternatives, which may limit its use in larger rooms or with more demanding speakers.

The Power Triode Tungsol 421A Audio NOS Amplifiers OTL offer a unique and highly desirable sound quality for music enthusiasts who prefer the warmth and richness of tube amplifiers. While tube amplifiers may require more maintenance and be less efficient than solid-state alternatives, the sound quality and listening experience that they provide can be worth the additional cost and effort. Ultimately, the decision to purchase a Power Triode Tungsol 421A Audio NOS Amplifiers OTL should be based on the individual's listening preferences, budget, and technical requirements.

If you are looking for a high-quality tube amplifier that offers a rich and warm sound quality, the Power Triode Tungsol 421A Audio NOS Amplifiers OTL may be a good fit for you. However, it's important to consider the additional maintenance and potential energy costs associated with tube amplifiers before making a purchase. You may also want to consider purchasing the amplifier from a reputable dealer or manufacturer to ensure that you receive high-quality tubes and a well-built amplifier. Ultimately, the best way to determine if the Power Triode Tungsol 421A Audio NOS Amplifiers OTL is right for you is to listen to it in person and compare it to other options on the market.

Details:

A matched quad of tubes may be available at twice the bid price should a bidder request same.

Test data for this pair of 421A tubes where 75 is the target reading for a bogey tube on the Hickok ism 110 climatic tester tube date code Tungsol 421A no shorts no gas tube date code Tungsol 421A no shorts no gas the 421A tubes were packaged in white boxes very old and in need of replacement. As such it may well be that Tungsol manufactured the 421A for western electric under contract. Matched pair nos 421A low mu power triode output tubes for use in high end otl audio power amplifiers and more.

Photo currently posted. The Tungsol 421A is structurally quite similar to the much sought after western electric 421A vacuum tube. Is now correct.

Tubes are factory marked as 421A. The 421A tubes have been carefully tested on our Hickok ism 118 climatic tube testers for quality, gas and shorts and test accordingly.

part #: 421a price

• $550.00

specifications speakepar:

• brand: Tungsol
• mpn: 421a
• country/region of manufacture: United States

Returns:

• policy: no returns

Offer:

• # bids: 0
• best offer: false
• Started: May 10, 2015, 1:22 am
• quantity: 1
• min. bid: $325.00
• # Sold: 0

Shipping:

• type: Flat
• handling: 10 days
• cost: $15.0

Ratings:

1. Tube testing does not indicate tube is NOS. Tube tested new but has slight usag 05-05-15
2. Thank you for your purchase! Please come back anytime to TheClassicArchives! 05-10-15
3. Good buyer, prompt payment, valued customer, highly recommended. 05-07-15
4. Good buyer, prompt payment, valued customer, highly recommended. 05-08-15

Payments:

• PayPal

General:

• Consumer Electronics > Radio Communication > Parts & Accessories > Tuners
• in stock: Yes
• condition: Seller refurbished

Seller:

• city: Rockaway, New Jersey
• zipcode: 07866

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