
( Brand: Raytheon Uniline ), ( Type: Vacuum Tube ), ( Country/region Of Manufacture: Germany )
The 6AB4 Neumann CM7156 Siemens Telefunken NOS EC92 Tube Vacuum is a truly exceptional piece of audio engineering. This vintage tube is a testament to the craftsmanship and innovation of the mid-20th century, hailing from the esteemed German manufacturers Siemens and Telefunken.
The 6AB4 tube, specifically the Neumann CM7156 variant, is renowned for its superior quality and performance. It was originally designed for use in high-end audio equipment, including microphones, preamps, and power amplifiers. The tube's unique configuration allows it to produce a rich, warm, and detailed sound character, making it particularly popular among audio enthusiasts and professionals.
The 6AB4 Neumann CM7156 Siemens Telefunken NOS EC92 Tube Vacuum is a New Old Stock (NOS) tube, meaning it is a tube that has been newly manufactured using the original blueprints and specifications, but has never been used before. This ensures that the tube is in pristine condition and will provide the same high-quality performance as the original tubes from the 1950s and 1960s.
The EC92 designation indicates that this tube is a dual triode, which means it has two independent amplifying stages within the same vacuum tube. This design allows for more complex circuitry, resulting in a wider frequency response and a more balanced sound.
In terms of physical specifications, the 6AB4 Neumann CM7156 Siemens Telefunken NOS EC92 Tube Vacuum is a large, glass-encased tube with a metal base. It measures approximately 6.3 inches in length and 2.7 inches in diameter. The tube is equipped with a set of metal pins for connecting to the audio equipment, and it has a distinctive blue-green color to its internal filament.
In conclusion, the 6AB4 Neumann CM7156 Siemens Telefunken NOS EC92 Tube Vacuum is a must-have for any serious audio enthusiast or professional. Its rich, detailed sound character, superior quality, and historical significance make it an invaluable addition to any vintage audio collection.
Pros of purchasing a 6AB4 Neumann CM7156 Siemens Telefunken NOs EC92 tube vacuum microphone:1. Authentic vintage sound: The 6AB4 tube provides a warm, rich, and natural sound that is highly sought after in the audio industry. This can give your recordings a unique character and depth.
2. Durable construction: The Neumann CM7156 is built with high-quality materials and craftsmanship. It features a rugged all-metal body and a durable grille, making it a reliable investment for professional use.
3. Versatile use: The CM7156 can be used for a variety of applications, including vocals, instruments, and even as a room mic. Its versatile design allows for a wide range of recording possibilities.
4. Collectible value: As a vintage microphone, the 6AB4 Neumann CM7156 has collectible value. It can be a great addition to any audio enthusiast's collection or a valuable asset for a studio or recording facility.
Cons of purchasing a 6AB4 Neumann CM7156 Siemens Telefunken NOs EC92 tube vacuum microphone:1. Expensive: Vintage microphones like the CM7156 can be quite expensive, especially in good condition. The cost of maintenance and replacement parts can also add to the overall cost.
2. Tube maintenance: Tube microphones require regular maintenance to keep them in good working order. This includes regular cleaning, tube replacements, and power supply checks.
3. Limited availability: Due to its age and popularity, finding a 6AB4 Neumann CM7156 in good condition can be challenging. This may require searching through various sources such as online auctions, vintage dealers, or private collections.
4. Limited modern compatibility: The CM7156 may not be compatible with some modern recording equipment, which may require additional investment in interface or preamp equipment.
Conclusion:The 6AB4 Neumann CM7156 Siemens Telefunken NOs EC92 tube vacuum microphone is a valuable investment for audio enthusiasts and professionals looking for a unique and warm sound. Its durable construction and versatile use make it a reliable tool for various recording applications. However, its high cost, tube maintenance requirements, and limited availability should be considered before making a purchase. If you are willing to invest in the upkeep and have a passion for vintage equipment, the CM7156 can be a great addition to your recording arsenal.
Recommendation:If you are interested in purchasing a 6AB4 Neumann CM7156 Siemens Telefunken NOs EC92 tube vacuum microphone, I recommend researching the microphone thoroughly to ensure it is in good working order. Check the condition of the tube, grille, and overall construction. You may also want to consider purchasing a high-quality power supply and preamp to ensure optimal performance. Additionally, be prepared for regular maintenance and potential replacement parts costs. It is also recommended to try out the microphone before purchasing, if possible, to ensure it meets your recording needs and preferences.
Tube type number 6AB4 EC92 actual brand siemens telefunken printed brand Raytheon Uniline quantity of tubes single plate construction gray fetter construction top o country of manufacture germany visible date codes m22 lettering condition 100% year made mica spacers 2 smoked glass no engraved base no boxes included 1 box original notes for neumann CM7156 befell um92 microphones if the actual brand does not match the printed brand, this is perfectly normal. We even guarantee our tubes to arrive without having any sound quality issues like micro phonics or noise.
A truly nos tube will have excellent fetter flashing condition, no dirt grime, usually in the original box, and no filament deposits.
What started as a hobby several years ago to fund my obsession with tube audio, viva tubes has quickly grown into a full time business.
The actual brand was determined by the IA codes printed on the tube.
On Feb at PST, every buyer gets a invitation for cash back.
Other options available only by request.
Rates for domestic USA buyers shipping for the first tube, pair, or quad will cost 4.