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  3. RCA 811-A

RCA 811-A Vacuum Tube

811-a Rca Vacuum Tube New

( Brand: Rca ), ( Manufacturer Part Number: 811-A ), ( Part Type: Vacuum Tube )

Review RCA 811 Vacuum Tube

The 811-A RCA vacuum tube is a classic and highly sought-after component in the world of audio technology. This tube is a dual triode, meaning it has two active elements within a single vacuum envelope. This design allows for both amplification and mixing functions, making it a versatile choice for various audio applications.

The 811-A RCA tube is notable for its large size and high power rating. With a plate voltage of 300-400 volts and a plate current of 60-100 milliamperes, this tube can deliver up to 25 watts of output power. This makes it an excellent choice for high-power audio applications, such as power amplifiers for speakers.

The 811-A RCA tube is known for its warm, rich sound. It has a wide frequency response, with a lower frequency limit of around 20 Hz and an upper limit of around 20 kHz. This means it can reproduce a wide range of audio frequencies, from the deepest bass to the highest treble, with impressive accuracy and clarity.

The 811-A RCA tube is made with high-quality materials and construction. It has a large glass envelope, which allows for a larger heater and larger grids, which in turn can handle more current and produce more power. The tube is also equipped with a metal filament, which provides a stable and long-lasting source of heat.

In terms of appearance, the 811-A RCA tube is a classic piece of audio technology. It has a distinctive octal base, which is characterized by its eight pins. The tube is also adorned with a red-tinted glass bulb, which houses the filament and the active elements.

In conclusion, the 811-A RCA vacuum tube is a powerful and versatile component in the world of audio technology. Its large size, high power rating, and warm, rich sound make it an excellent choice for high-power audio applications. Whether you're a professional audio engineer or a hobbyist, the 811-A RCA tube is a must-have for anyone who values the warmth and richness of tube audio.

Pros of buying a 811-A RCA vacuum tube:

1. Authenticity: The 811-A is a highly sought-after tube, known for its rich and detailed sound, especially in audio applications.

2. Sound Quality: Its triple triode design allows for a wide frequency response and high power output, resulting in a warm, rich, and dynamic sound.

3. Durability: Vacuum tubes, when properly maintained, can last for many years, making them a cost-effective option in the long run.

4. Collectibility: As a vintage tube, the 811-A has a certain appeal to audiophiles and collectors, potentially increasing its value over time.

Cons of buying a 811-A RCA vacuum tube:

1. Availability: Due to its age and limited production, finding a new or even good-condition 811-A tube can be challenging.

2. Cost: When available, the 811-A can be quite expensive, especially compared to modern solid-state alternatives.

3. Maintenance: Vacuum tubes require regular maintenance, including cleaning and replacement of filaments, to ensure optimal performance.

4. Power Consumption: Tube amplifiers, which often use 811-A tubes, consume more power than their solid-state counterparts.

Conclusion:

The 811-A RCA vacuum tube is a high-quality, vintage component that offers a unique and rich sound experience. While its cost and availability can be drawbacks, the tube's durability, collectibility, and the warm, dynamic sound it produces can make it an attractive option for audiophiles and hobbyists. If you are looking for a tube amplifier or audio system that delivers a distinctive sound, consider the 811-A as an option, but be prepared for its maintenance requirements and potential higher cost.

Details:

Rca 811-A vacuum tube new in box guaranteed not DOA picture of actual item being sold free shipping USA.

part #: 811-a prices

  • $99.00-$429.99

specifications cassettevintagee:

  • brand: Rca
  • mpn: 811-a
  • part type: Vacuum Tube

Ratings:

  1. 5 STARS!! Quick response and fast payment. Perfect! THANKS!! 10-20-18
  2. Great buyer! Highly recommended. 10-22-18
  3. Hope to deal with you again. Thank you. 10-19-18
  4. Espero que volvamos a hacer negocios juntos. 10-22-18
  5. A Buyer, Easy, fast, transaction a pleasure to do business with! 10-19-18

General cassettevintagee:

  • in stock: Yes
  • Vintage Audio Video > Vintage Amplifiers Tube Amps

Shipping cassettevintagee:

  • type: Flat
  • handling: 1 days
  • cost: $0.0

Payments cassettevintagee:

  • PayPal

Returns cassettevintagee:

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

Offer cassettevintagee:

  • Sold: 0
  • bids: 0
  • quantity: 2
  • best offer: true
  • Started: October 24, 2018, 1:20 pm

Seller cassettevintagee:

  • # feedbacks 10-24-18: 1026
  • city: Warsaw, Missouri
  • zipcode: 65355
  • rating 10-24-18: 99.6%
part type: vacuum tube,
category: electronics > vintage audio video > vintage amplifiers tube amps, sku: 1506992942007291,
Review#1 5 STARS!! Quick response and fast payment. Perfect! THANKS!! ()
Review#2 Great buyer! Highly recommended. ()
Review#3 Hope to deal with you again. Thank you. ()
Review#4 Espero que volvamos a hacer negocios juntos. ()
Review#5 A Buyer, Easy, fast, transaction a pleasure to do business with! ()
Rca 811-A Is Similar To:
  • (19.8% similar) It looks similar to one listed on reverb from the 1930S. Comes with everything you see. The electric cord has been cut, so I have not tested it. I'm a pretty brave shipper, but this is extraordinarily heavy, and the tubes are fragile. One of the things that screws down on right only has screw ...(October 30th, 2018)
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  • (50.8% similar) Caveat: as indicated above, I have tested this tube and believe it is in the performance condition stated above. The two tirades are perfectly matched at 76 out of 100 scale readings. Both tirades readings dropped only 1 point 75 on the meter scale. Tube must return in same condition as when shipped...(May 22nd, 2017)
  • (46.3% similar) Testing: I test all tubes that sell in one way or another, will state untested. I will bend over backwards to make sure that you are a happy customer. Vintage tube testers almost always, due to age, have very low heater voltage s. Do not handle the tubes or hold them from cylinder. All are nos nib ...(October 12th, 2018)
  • (54.9% similar) Tape player was model 8-TR-3. It has a 1/8 Rca jack for inputting radio or cassette which worked fine. You get the AMP,3 speakers, a remote control switch and assorted wiring that went with it. The long stem with pair of nobs on it controlled tone and volume. The 3 hard wired speakers are one 6 and ...(December 15th, 2017)
  • (43.9% similar) Always hold them from the ends. I have a b k 747 tube tester. The tectonics curve tracer gives values within 3 of actual value. Vintage tube testers almost always, due to age, have very low heater voltage s. One evaluation is a screen shot of the tube with high voltage applied to plate do not ...(July 15th, 2018)
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  • (45.2% similar) Within my own collection of vacuum tube radios and hi-fie, this has worked very well provided great results. Power tubes s. Now on to this listing. Bid with total confidence. Using my tester as noted above where any reading is considered good. These tubes tested strong and will provide great results...(March 20th, 2018)
  • (36.4% similar) These are from matching phonographs and both untested. Two tubes are Rca ix types. These amps are worthy of restoration as they great sounding with the 245 in push pull. They are complete with all tubes, cords, and in good cosmetic condition. This is the power used in several Rca victor radio model'...(October 18th, 2018)
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5 offers $99.00–$429.99 USD
  • Open box. Offer #1 priced at $99.00 + $5.97 shipping estimate = $104.97* total. These look new but I m not sure. NOS RCA Tube 811A NOS 1PCS USA vacuum tubes Tube.+$5.97 shipping
  • Unspecified. Offer #2 priced at $429.99 + $30.00 shipping estimate = $459.99* total. 4 PCS RCA Tube JAN 811A NOS.+$30.00 shipping
  • Open box. Offer #3 priced at $179.00 + $19.93 shipping estimate = $198.93* total. Type: Vacuum Tube. 811A is direct-heated type thorium tungsten cathode high triode, can be used as high-frequencyoscillation power amplification.+$19.93 shipping
  • New – Open box. Offer #4 priced at $79.99 + $17.02 shipping estimate = $97.01* total. Product Information.+$17.02 shipping
  • Open box. Offer #5 priced at $90.00 + $11.35 shipping estimate = $101.35* total. B12 The product is a lot of 2 vintage RF vacuum valve tubes from the Soviet Union, specifically produced by National Electronics and Electron.+$11.35 shipping

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