dannie01
Headphoneus Supremus
- Joined
- Feb 22, 2008
- Posts
- 1,554
- Likes
- 20
Quote:
The 5931 is just a 5U4G that has gone through additional screening and has an additional mica to reduce microphonics and noise for harsh environments, and should more or less sound the same as a 5U4G. With the right tubes the 5U4G can deliver pretty punchy bass.
When I bought my GZ33 it was under the assumption that it was basically the electrical equivalent of a 5U4G, but that doesn't seem to be the case. I guess it lands somewhere between the 5AR4 and 5U4G, and the GZ37 is even more of its own thing. One thing I do know is that the tube has been a lot of fun to experiment with. I intend to try it with all of my drivers, and so far I've been surprised at what I've heard. So far the synergy with the National Union 6SN7 is crazy good...... with the RCA VT-231 greyglass, not so much. Not in the way I was expecting either. It sounds rather dull and lifeless, which is the opposite of what I thought I'd be greeted with. I can't wait to try my various Sylvanias with the Mullard.
Thanks for the input, Xcalibur. Your information help a lot on tubes purchasing and it's my reference, too.