What is a JJ tube?

A jejunostomy tube (J-tube) is a soft, plastic tube placed through the skin of the abdomen into the midsection of the small intestine. The tube delivers food and medicine until the person is healthy enough to eat by mouth. You’ll need to know how to care for the J-tube and the skin where the tube enters the body.

Where are JJ power tubes made?

Slovakia
JJ Electronic, s.r.o is a Slovak electronic component manufacturer, and one of the world’s remaining producers of vacuum tubes. They are based in Čadca, in the Kysuce region of Slovakia.

Are JJ 6L6 tubes good?

The tubes have great tone and nicely capture the “6L6 sound”, characterized by sparkling highs, warm mids, and controlled bass response. Biasing was easy and well within the range of the standard bias adjustment circuit in the test amp. A great choice for any of the Fender amps made in the 60’s and 70’s.

Can I replace 6L6 with 6V6?

Can I use a 6L6 instead of a 6v6? The general answer is no, for the most part, 6L6 and 6v6 tubes are not interchangeable as they don’t bias close enough. Amps are calibrated to use specific valves (6v6, 6L6, EL84, etc.) and are not always well suited to multiple valve usage without circuit modifications.

Are all 6L6 tubes the same?

For the most part, 6L6 tubes are interchangeable. The 6L6 along with the G, GA and GB are all rated to the same 19 watt plate dissipation with 360 plate volts.

Are JJ tubes Russian?

This is because JJ tubes are manfactured with some of the same tooling as Tesla tubes. The old Tesla tube fabrication machines were physically moved from the Tesla Rožnov factory, Czech Republic by Jan Jorgo (JJ) to Cadca, Slovakia (some 50km east) in the early 1990s.

Who makes the best 6L6 power tubes?

List of top-rated 6L6 tubes

• Tungsol Reissue 6L6GC Power Tube, Apex Matched Pair.
• JJ Electronics Amplifier Tube (T-6L6GC-JJ-MP)
• Groove Tubes GT-6L6-R Medium Duet Amplifier Tube.
• Electro-Harmonix 6L6GC Vacuum Tube.
• Svetlana 6L6 Tube Soft/Red Duet.
• Sovtek 5881WXT / 6L6WGC Vacuum Tube, Matched Pair.

Are 6L6 and 6V6 the same?

The functional difference between the 6L6 and the 6V6 is that the 6L6 is a much higher power tube (about 25w), which means in practice it has a punchier tone with tighter bass and glassy highs.

What is the difference between 6L6 and 6V6 tubes?

6L6s generally offer a bolder, tighter feel with a smoother midrange and glassier top, whereas a 6V6 tends to have a little more midrange bite and spongier lows.

How long do 6L6 tubes last?

It depends heavily on use. In a closet, the tubes will last forever, of course. For practice in a bedroom a couple of times a week at modest volumes, you’ll probably get five to ten years out of them.

Can I replace 6L6 with 6v6?

Can you put 6L6 tubes in a 6v6 amp?

A few — but definitely not all — 6V6 amps can handle 6L6 or even EL-34 power tubes.