JP's Gear Review v2.0 - Ep. 3.5 - Little Bear G3 tube upgrade!
(Editor's note: due to a ridiculously dumb ribcage injury that occurred at the gym a few days ago preventing me to hold an instrument for more than 2 minutes, there will not be any audio demo of the upgraded tube just yet. There will be a separate post with them later on, once the pain level is tolerable.)
In the previous episode, I mentioned wanting to get a replacement 6N2 tube to get the maximum amount of overdrive possible and retain the intended design of the pedal. I ended up doing just that over the weekend, and I received it yesterday! The good people at The Tube Store have some Voskhod 6N2P-EB tubes for about 21$CAD a piece, and I ordered one along with some 7189 power tubes for the Bassbreaker.
What's a 6N2P-EB?The 6N2P (Russian: 6H2П) is miniature, 9-pin, dual triodes tube which is compatible to the 6AX7 tubes used outside of the Soviet bloc. It uses a filament voltage of 6.3V at 0.3 amperes, and is very similar to its cousin, the 12AX7, however the latter uses a 12.6V filament voltage, and the pinout is slightly different, so they are NOT compatible with each other unless you rewire the socket.
The EB variant is a ruggedized, military, long-life version of the standard 6N2 tube. It was designed to withstand vibration and shock, and has a lifespan of 5000 hours.
The most common source for these tubes would be the Voskhod factory in Russia. Also known as the Voskhod Rockets, tubes coming out of that factory are usually very reliable. The tube I received was packed in a nice plain-white box, and the tube itself was in perfect condition. Pin corrosion was practically non-existant all the pins were straight, but the markings on the glass were a bit faint (which is to be expected for a tube this old). The date code is, I believe 09-81, making this tube 41 years old. The Voskhod "rocket" logo is still visible above the tube designation.
Changing the tube
How does it sound?
The All-Important Rating™
Header image: FreeImages