This matched pair of Telefunken ECC83-TK/12AX7 Black Diamond Series Vacuum Tubes is ideal for use in input and inter-stage audio amplifiers in homes, studios, and live stage applications. From stompboxes and guitar amps to compressors and microphones, 12AX7 tubes are widely used for their even-order harmonic distortion and full frequency range. Offering high gain and low noise, these dual-triode tubes deliver extended headroom and balanced tone complementary to an array of musical genres. The ECC83-TK/12AX7 is characterized by its clean highs, thick midrange, and prominent bass.

Dual-Triode Vacuum Tubes    Ideal for Input & Inter-Stage Amplifiers    High Gain & Low Noise    Clean Headroom, Rich Harmonic Distortion    Well Balanced, Full Frequency Response    Smooth Highs, Rich Mids, Strong Lows

Newly manufactured and cryogenically treated rendition of the classic ECC83 dual-triode vacuum tube, commonly known by the American designation 12AX7

Great for input and inter-stage audio amplifiers used in all types of music and playing styles

Designed to allow cleaner headroom than higher gain 12AX7s when pushed into overdrive

Strongly defined lows, a rich midrange, and clean, smooth highs

High-gain and low-noise characteristics

Rich even-order harmonic distortion when driven into overdrive

Each tube is meticulously measured for all critical parameters of performance including transconductance, gain, noise, and microphonics

Tubes are selected by hand, rigorously tested, subjected to an extended burn-in period for stability, and remeasured before final packing

Related Questions and Answers

Q: 1. is this a low noise tube ?

A: I believe it is. I changed out the tube in my preamp before even using it. It is the Telefunken equivalent to a 12AX7 which is a industry standard preamp tube. Telefunken has been in the high end audio tube business for many many years. I just believe this is the best preamp tube available. The tube i had pulled out was supposedly a selected Chinese 12AX7. Although I do not have the measuring equipment to measure any differences, I am completely satisfied with the ECC83.

Q: 2. Is it possible to recieve 4 of these tubes all matched?

A: I am sorry. We cannot promise any tube matching.

Q: 3. this product new or secondhand?

A: This is a brand new item. All products purchased from B&H are brand new in the original factory box including packaging, all factory included accessories and factory warranty, unless otherwise stated to be USED, Refurbished, Open Box, or Demo.

Q: 4. Is this Telefunken E88CC the same as a 12AX7A tube?

A: No, the pin configuration is different.

Q: 5. Does the omni capsule come included in the box or is that sold separately?

A: The RODE NT5 Cardioid Studio Condenser Microphone includes a cardioid capsule only. The RODE NT45-O Omnidirectional Replacement Capsule for Rode Microphones (B&H # RONT45O) is available separately.

Q: 6. Where are these made?

A: The ART M-Six Stereo Pencil Condenser Microphone (Matched Pair) are made in China.

Q: 7. is this new or seacondhand?

A: This is a brand new ittem: All products purchased from B&H are brand new in the original factory box including packaging, all factory included accessories and factory warranty, unless otherwise stated to be USED, Refurbished, Open Box, or Demo.

Q: 8. how do I register?

A: Follow this link to register:a href= http://en.rode.com/warranty/step1 target= _blank http://en.rode.com/warranty/step1/a

Q: 9. Is this Telefunken smooth plate 12AX7 tube ? What country and year of production.? Thanks

A: The Telefunken ECC83-TK/12AX7 Black Diamond Series Vacuum Tube is manufactured in Slovak Republic.

Q: 10. Are these mics worth purchasing for large group interviews, such as interviewing an 8 piece party band? Looking to capture superb sound on a budget.

A: These would not be the best choice for interviews. Please contact us via telephone or via e-mail so we can learn more details regarding your projects/applications. 800.606.6969 / 212.444.6615 -----------------------------------Audio@bandh.com