AMPEREX 9DE4 Radio Vacuum Tube

( Brand: Amperex ), ( Manufacturer Part Number: 9DE4 ), ( Type: Vacuum Tube ), ( Country/region Of Manufacture: Netherlands )

Review AMPEREX Vintage Radio Vacuum Tube Used Tested Good

The Radio Vacuum Tube 9DE4 Amperex is a vintage component that brings a touch of nostalgia and authenticity to any audio enthusiast's collection. This 9DE4 tube, manufactured by Amperex, is a 9-pin pentode vacuum tube, specifically designed for use as an amplifier in high-fidelity audio applications.

The 9DE4 tube measures approximately 6.5 inches in length and 1.5 inches in diameter, with a distinctive glass enclosure that houses the internal components. The tube's filament, made of tungsten, is housed in a small metal compartment at one end of the glass enclosure. The filament is connected to the power supply and serves as the heat source that vaporizes the evaporated cathode material.

The internal components of the 9DE4 tube include the cathode, grid, and plates, which work together to amplify the audio signal. The cathode is made of a heated material that emits electrons, which are then controlled by the grid. The grid serves as a voltage-controlled device that allows the amplification of the audio signal. The plates, located on the opposite side of the cathode, collect the electrons and amplify the audio signal further.

The 9DE4 tube is known for its high-quality sound reproduction, with a rich, warm, and detailed sound that is often preferred by audiophiles. The tube's ability to provide a natural and smooth sound, without distortion, makes it an excellent choice for use in high-fidelity audio applications, such as vintage radio receivers, amplifiers, and audio preamps.

The 9DE4 tube is a rare and sought-after component due to its vintage nature and the high-quality sound it provides. It requires proper care and maintenance, including regular cleaning of the glass enclosure and the use of a suitable power supply to ensure proper operation. When used in a high-quality audio system, the 9DE4 tube can provide an unforgettable listening experience, transporting the listener back to a time when music was enjoyed through the warm and inviting sound of a vacuum tube amplifier.

1. Authentic Vintage Experience: The 9DE4 Amperex tube amplifier provides a unique, authentic vintage sound that modern solid-state amplifiers cannot replicate.

2. Warm Tone: Vacuum tube amplifiers have a warmer tone than solid-state amplifiers, which can enhance the listening experience for some music genres, such as jazz and blues.

3. Durable Construction: Vacuum tubes have been around for over a century, and they are known for their durability. With proper care, a 9DE4 Amperex tube amplifier can last a long time.

4. Collectible Value: Vintage vacuum tube amplifiers, like the 9DE4 Amperex, can be collectible items with increasing value over time.

1. Higher Cost: Vacuum tube amplifiers, such as the 9DE4 Amperex, are generally more expensive than modern solid-state amplifiers due to their vintage nature and the cost of the tubes themselves.

2. Maintenance: Vacuum tube amplifiers require more maintenance than solid-state amplifiers. They need to be regularly cleaned and may require tube replacement.

3. Less Efficient: Vacuum tube amplifiers are less efficient than solid-state amplifiers. They consume more power and generate more heat.

4. Limited Availability: Due to their age, finding replacement tubes for a 9DE4 Amperex can be challenging, and it may require sourcing them from specialized suppliers.

The 9DE4 Amperex tube amplifier offers a unique and authentic vintage sound experience with its warm tone. It is also a durable and potentially collectible item. However, it comes with higher costs, maintenance requirements, and limited availability of replacement tubes. Ultimately, the decision to purchase a 9DE4 Amperex tube amplifier depends on individual preferences, needs, and budget.

If you are a music enthusiast looking for a unique sound and are willing to invest in regular maintenance and potentially higher costs, the 9DE4 Amperex tube amplifier could be an excellent addition to your collection. However, if you are looking for a more cost-effective and low-maintenance option, a modern solid-state amplifier may be a better choice for you.

Details:

I strive to give excellent service and take my ratings seriously. A note about my tubes: most of the tubes I sell are used and have not been tested for remaining useful life if there even is reliable way to do this.

It was tested with a b k 667 tube tester and good. If you want something new or close to then finding a nos nib item will serve better. This is for one 9DE4 vacuum tube without a box tubes were acquired in large lot. This may be a nos tube.

This item is posted and managed courtesy of bonanza. Please submit a rating after making purchase.

Item used, sold as-is.

specifications tubesocketvintagego:

• brand: Amperex
• mpn: 9de4
• type: Vacuum Tube
• country/region of manufacture: Netherlands

Payments tubesocketvintagego:

• PayPal

Returns tubesocketvintagego:

• time: 30 Days
• type: Money Back
• paid by: Buyer
• details: Restocking fee: No
• policy: returns accepted

General tubesocketvintagego:

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

Offer tubesocketvintagego:

• Sold: 0
• best offer: false
• quantity: 1
• bids: 0
• Started: March 1, 2018, 4:08 pm

Seller tubesocketvintagego:

• zipcode: 37882
• city: Townsend, Tennessee

Shipping tubesocketvintagego:

• type: Calculated
• cost: $3.8
• handling: 1 days

Ratings:

1. Good seller! 02-24-18
2. Thank you for shopping at Shoesupplies-Wholesale for your shoe care needs! 02-24-18
3. Fast shipping and very careful packaging. 02-17-18
4. Good buyer, prompt payment, valued customer, highly recommended. 02-21-18
5. Great communication. A pleasure to do business with. 02-26-18

Amperex 9DE4 Is Similar To:

• 10244 Amperex Nos Photomultiplier Tube (37.1% similar) The face has some wear that should be mentioned. From the inventory of a closed lab...(May 31st, 2017)
• 10ld6 Amperex Nos Vacuum Tubes Tests Good (68% similar) ...(October 9th, 2018)
• 11.800 Amperex Beckman Holland 6922 Gold Pin Vacuum Tube V Strong 10 900 11.800 Mhos (39.2% similar) This tester uses regulated power sources for the bias, plate, screen voltage s, as well as modified operating testing procedures green girl's guaranteed VINTAGETUBES211. Ma results 10,900 11,800 hos tubes can be accurately matched for gm plate current at the manufacturer's specified test points or ...(August 19th, 2016)
• 11af9 Vintage Amperex Serious Tubes For (42.9% similar) Vintage Amperex...(March 7th, 2017)
• 13gf7a Zenith Amperex 2 Double Triode Vacuum Tubes Nos Tested (56.7% similar) 2/1 3GF7A double tried vacuum tubes nos tested zenith Amperex tested good on mercury 202...(December 14th, 2016)
• Valvo 150c1 Amperex Tube 3 Qty Type (38.3% similar) Used, not tested, sorry I cannot test this type. One Amperex and two Volvo. These have some loose glue in the bases. Unusual European tube type. Three 3/1 50C1 tubes...(January 23rd, 2015)
• 15545 Amperex Lot Of Tube Made In Germany Globe Strong One (35.9% similar) All tubes have a number in the bottom of glass between pins: 2,2,10,10,5 printing on is pretty good condition considering they are almost 50 years old. All of same construction...(October 13th, 2018)
• 17ew8-hcc85 Amperex Radio Tube Tested (56.3% similar) Tested strong on a b k 650 DNA-quick tester. I am only shipping these via USPS priority mail so they arrive secure and quick. All have been tested and 90 test strong, but good. View my other listings for more vintage radio tubes. This sale is for 1 Amperex 17EW8 HCC85 radio tube. Although some may ...(May 1st, 2018)
• 17gt5 Tube Electron Amperex (20.9% similar) ...(March 11th, 2015)
• Boy Lot Amperex Ecc88 Heerlen Tested Hickok 1959-63 6dj8 18 Bugle (38.7% similar) Lot of 18 Amperex ECC88 6DJ8 bugle boy dates range from Helen some small, some large o fetters fully tested on calibrated Hickok tester test results new 12,500 um hos min armhole tubes are at least 11,000 um hos...(February 27th, 2015)
• 1x2a B Amperex Nos Vintage (36.8% similar) Tech-harvester offerings...(September 14th, 2017)