Are KT66 and EL34 interchangeable?
These are real meaty sounding and as close to blending a 6L6GC with an EL34 as you can get. The JJ KT66 can be used in a variety of amps that use 6L6’s if there is room! In amps that are made to use both 6L6’s and EL34’s the JJ 6550’s are almost universally usable.
Can KT66 replace 6L6?
One thing worth noting is that many folks consider the KT66 tube to be a substitute for the 6L6 tube types. Although this is acceptable in some circuits they are not direct substitutes. The 6L6 tube type has a heater filament that draws approximately 0.9A of current. The KT66 draws about 50% more current, 1.3A.
What is the difference between EL34 and EL34B?
They are a slightly higher impedance tube which means they will bias differently that a regular EL34 (but still within the range of the bias pots). They will not damage your preamp tubes. Review: The Tungsol EL34B is likely to become the #1 choice of currently produced EL34 tubes.
Is KT88 same as 6550?
6550, KT88’s, and KT90 are interchangeable. The 6550 originated in the US and the KT88 is the European answer to the 6550. Its called “One-up-man-ship”.
Can a 6550 replace EL34?
The 6550 is cleaner (if you keep the PI the same), wider bandwidth and has a slight scoped mid feel compared to the EL34. My personal preference is for EL34s but many do like the 6550, especially for sparkling cleans and more metally type overdriven tones.
Can I swap EL34 for EL84?
In the specific case of swapping an EL34 for an EL84, you actually can’t swap them because the two different tubes have a different number of pins on their sockets.
What amp uses KT66?
Very well known amps were designed with KT66 tube. For example, legendary LEAK Quad II and Heath W5M use KT66 tube in Williamson circuit. And of course, the Marshall JTM45 and its derivative models 1961 and 1962 used the KT66 tubes.
Are Tung-Sol EL34 tubes good?
The Tung-Sol EL34B power tubes sound bright with great high-end tone. This is an excellent option for the new production tubes with high C/P value. You can hear the high density music from these tubes comparable to the quality of Tesla/Sovtek vintage EL34 tubes with much lower price. Highly recomended!
Which is better KT88 VS 6550?
General rule is that the KT88 goes anywhere a 6550 will and usually the reverse as well, but the 88 was the more highly rated tube. It has IIRC a higher permissible plate dissipation and higher voltage ratings, but in practice they are pretty close.
Are KT88 and KT120 interchangeable?
Tung-Sol KT120 A drop-in replacement for KT88s, rated to a plate dissipation of 60 W. But because they draw more filament current from your amp’s output transformer, you should check with your amp’s manufacturer to make sure you have enough headroom.
Can I swap EL34 for KT88?
EL34 and KT88 share the same pinout and are interchangeable in some circuits.
What are 6550 tubes?
6550. The 6550 is a beam tetrode that’s similar and often interchangeable with the KT88 and KT90. It was introduced by Tung-Sol in 1964.
Can a KT66 be used in an EL34 transformer?
Assuming the amp is designed around real KT66 specs the transformer would be presenting a load of 2.5k to the plates with 4 tubes in the 100W version or 5k with 2 tubes in the 50W version. Luckily these are same plate load values that EL34 tubes want to see in 4 tube 100W and 2 tube 50W amp IF it uses same plate voltage (B+) as the KT66 design.
Is the KT77 a replacement for the EL34?
The KT77 is a “direct” replacement for the EL34. These are sweet sounding tubes and like the KT66 offer more headroom. I have a non Marshall amp equipped with these and I really like it for obtaining the 70’s rock sound.
Which is better Amperex EL34 or KT66?
The Amperex EL34 sheet shows 11.5/22.5 mA per tube (zero-signal/full power), while the GEC KT66 sheet shows 2.5/9 mA – at a higher-voltage operating point. These numbers suggest that EL34s draw between two and three times the screen current of KT66. All in all, substituting EL34 for KT66 should not present any serious problems IMO.
What should idle plate voltage be for KT66?
All in all, substituting EL34 for KT66 should not present any serious problems IMO. 500-530V idle plate voltage is a pretty normal condition for KT66. EL34 should have no problem with it either – take a look at old Laney Klipp 100 which run EL34 at over 600V (some arcing on the sockets was not uncommon though)