JJ Electronics Amplifier Tube (T-5Y3-S-JJ)

Arrived earlier than expected, and in working order.

This tube came to me as a none functional unit that looked wrong from the minute I took it out the box. the top inside of the bulb was crusted with a calcium like deposit, probably never even tested before being sent out. The amp worked before I installed the tube, just made a bad sounding hum after, big waste of time.

Good as original 5Y3 tube

Jj tubes are the best tubes for the money (period). I use a lot of amps and have all kinds of vintage and NOS tubes and they sound great but JJ tubes do the job and sound good too at a much more reasonable price.

Like most with vintage tube amps, I am a bit alarmed with the so-called 5Y3 rectifiers being sold these days and their higher output voltages. Well, you can relax with this one. I measured it compared with the Made in USA Fender labelled tube in my old SF Vibro Champ and here are the results: with 122VAC line voltage in, the Fender 5Y3 outputs a B+ of 384V and the JJ 5Y3 outputs 382V. That makes them pretty much identical. I have been practicing and gigging with this tube every week for about 6 weeks with no problems either. I just ordered another as a spare and hope JJ keeps making these! Thanks JJ!

When I built my 5E3 Tweed Deluxe clone 6 years ago, I read that it was important to use a NOS 5Y3 rectifier to get the right voltage for the 5E3 circuit. Lately Ive been reading that these JJs are the one current-production 5Y3 that delivers correct voltage, and theyre getting very good reviews in general. So when my NOS Raytheon bit the dust I decided to try out one of these JJs. Well I guess that Raytheon had been tired for awhile. In any event, my Deluxe now sounds noticeably brighter, cleaner, and more articulate than before. Very happy with the results. Great tube at a great price. I just ordered another for a spare.

Solid! Saved my DR Z!

My last JJ 5Y3 lasted several years in a Class A amp, played out quite a bit. This one came wrapped great and works as it should. Turns out it’s Tube Depot, who I’ve bought from many times, so no surprises there. Time to get my tweed back on!

Tube I received was defective, and did not work. I was really disappointed.

Did an excellent job of restoring my 1960s record player