Is KT77 same as EL34?
The quick answer to the difference between EL34 vs 6CA7 or EL34 vs KT77 is simple. EL34, 6CA7 and KT77 are all drop-in replacement of each other. You can use 6CA7 or KT77 in place of EL34. Electrically, they are the same.
Do power tubes affect tone?
It has no effect on the sound. This phenomenon only happens in a tube with better-than-average vacuum (pure). Therefore, the tube is actually a better-quality tube!
Do power tubes need to be burned in?
Power tubes definitely have to have their bias stabilize for their first week or two of play. But for small-signal tubes, burning-in accomplishes nothing except for shortening the life of the tube unnecessarily.
How long will power tubes last?
Tube Life Span Power Tubes are generally at their best 1 – 1.5 years. Rectifier Tubes are generally at their best 3 – 5+ years.
Do tubes change amp sound?
Tube rolling is one of the pleasures of tube amp ownership. Most of us have experienced a noticeable change in sound quality when changing tubes. Although these changes are almost always attributed to the tube alone, it’s not that simple.
How often should you change tubes in amp?
You can expect a conventional amplifier tube to have a service life ranging up to 10,000 hours. Tubes with military specifications are built to last up to 100,000 hours.
What do bad power tubes sound like?
Preamp tubes usually cause problems through noise or microphonics. If noise, you will hear hiss, crackling, popping or similar issues. If you hear squeal, hum or feedback, it is typically a microphonic tube. Noise from microphonic tubes will typically increase with a volume increase.
How long do tubes last in microphones?
Unfortunately the minature tubes wear out much faster then the normal sized ones. Factory specs telling about 10,000 h for a Telefunken AC 701. But this is theory. For mic use the requirements are higher, and lot’s of these tubes start to get noisy long before.
When did the KT77 audio tube come out?
GEC in West London, England, introduced the KT77 tube in the late 1950s as the ultimate medium power audio tube. KT77 tube employed an internal construction resembling 6CA7, but GEC optimized the KT77 tube for high-fidelity audio applications.
Can a KT77 be used in an EL34 AMP?
If you have a Marshall amp and find EL34’s too compressed and 6550’s too crunchy the JJ KT77 may be just the ticket.” The now rare KT77 tube was introduced by MO-Valve in the late 1950’s and has recently been brought back by JJ. They use the same base and biasing as any EL34 tube so they are a great option for substitution in any EL34 amp.
Which is better the 6CA7 or the KT77?
The 6CA7 and the KT77 tubes have a much deeper and more open sound with a cleaner high end. The re-issue of these tubes makes it possible to try them out and find the sound that is right for you. How long do EL34 tubes last?
Is the gold lion KT77 tube type refundable?
You are responsible for ordering the correct tube type. TUBES ARE NOT EXCHANGEABLE OR REFUNDABLE UNDER ANY CIRCUMSTANCES Acceptance of our policies, known or unknown to you, is acknowledged by your tube purchase. Notice: We supply the very finest KT77s that you can get and our testing is the best.