NOS Mazda 5Y3GB (some labeled Cifte)
NOTE: THESE ARE ALMOST 4" TALL SO CHECK TO BE SURE YOU HAVE ENOUGH SPACE.
These have indirectly heated cathodes like 5AR4s and 5V4s. This means that it takes a minute or so for this tube to supply B+ voltage to the rest of the tubes in your amp, thereby allowing them to preheat and prolonging their life. Prefect in all amps without standby switches. The few extra bucks you spend on one of these will save you lots of money by extending the life of the other tubes in your amp.
"Mike, The Mazda 5Y3GB is the bomb. I wanted it primarily because my Victoria tweed clone doesn't have a standby switch. What I didn't expect is that it would have much impact on the tone. The amp is definitely a little sweeter sounding now. Really cool looking tube too! Great find. Thanks. David"
"Hi Mike: I have to say that the Mazda 5Y3GB is absolutely fantastic in my early 50's Gibson GA20 amp! Never before have I noticed such a dramatic difference in tone with a change of the rectifier tube.. smoothed out the raw crunch of the speaker breakup into a much sweeter type of distortion.. And it's SUCH a beautiful tube as well!! What's yr stock on hand like? Chris J"
I just wanted to let you know that the Mazda 5Y3GB