(1)T-12AT7-JJ (1)T-12AX7-S-JJ
T**R
Quick fix for more headroom and fuller tone
So this was a quick and easy fix with noticeable improvement. I was look for some more headroom from the Greta and this certain fit the bill. I found it very responsive and worked very well with the volume knob on my Telecaster.At first, all I really noticed was the additional headroom for the clean settings, but let the tubes warm up for a couple of hours and you will notice the fullness (well, fullness from a Greta) and more harmonics.Summary:- under $20- takes less than 10 minutes to install- feels like the way the Greta should have sounded from the factoryNotes on changing tubes for n00bs:- use surgical gloves if available to keep the glass clean- make sure the amp is completely unplugged- follow the "always one hand in your pocket rule" when changing tubes- take you time lining up the pins on the bottom of the tube- they will go in just fine
P**D
Better tubes.
A splendid sound improvement over the original tubes, for the sort of jazz I play. My suspicion is the early distortion of the original tubes was intentional for people who want quick breakup. I don't, so I have more headroom and a smoother sound with the JJ tube set.
T**Y
Nice Upgrade For Greta
These tubes helped increase the (otherwise sorely lacking) headroom on the Greta, making it a much more useful amplifier for practice purposes. It's not a stark difference, but noticeable and well worth the minimal investment. Plus the seller is helpful and knowledgeable.Now if we can get someone to make a good replacement speaker for the 4" unit the Greta comes with, we'll be all set!
Trustpilot
2 weeks ago
1 day ago