• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Bugle Boy 5ar4

vintagetuber

vintagetuber

Spin to Win
image.jpg Got these little additions to my family recently.
I know the jury is hung regarding rectifier tubes making a difference in sound quality.
All I can say is that I know my VTA Dynaco 70 sounds much better after replacing the USA made 70’s vintage 5ar4 with this Holland Bugle Boy f31. And...it looks really good with the treble clef.

Also found a Bugle Boy 12au7 that tested strong in my massive box o tubes. I put that one in the center position on the driver board.

Overall, it sounds pretty good.
 
Register to hide this ad
vintagetuber said:
View attachment 2122447 Got these little additions to my family recently.
I know the jury is hung regarding rectifier tubes making a difference in sound quality.
All I can say is that I know my VTA Dynaco 70 sounds much better after replacing the USA made 70’s vintage 5ar4 with this Holland Bugle Boy f31. And...it looks really good with the treble clef.

Also found a Bugle Boy 12au7 that tested strong in my massive box o tubes. I put that one in the center position on the driver board.

Overall, it sounds pretty good.
Click to expand...

that Bugle Boy is probably Mullard-made, with the F31 code. i didn't notice a major difference when I swapped out a GE 5AR4 for a GB-produced Mullard F31 5AR4, but my amp doesn't draw as much power so that could be the difference.
 
You must log in or register to reply here.
Back
Top Bottom