[technocrat]

Hello Head fiers! 
  I am looking to swap out the tubes in my hlly mk III. the pre amp is GE 5654 and the power tube is 6n11 or 6h30. Any suggestions that will improve performance? Any other mods users can suggest? 
  
   Thanks again

 

[wwmhf]

I think rolling the tube will have some positive impacts on the sound, but not as much as upgrading the guts. Replacing either the driver and power tube gave me better performance. Now, I am using a pair of GE FAA 5654W and a pair of Russian 6N23.  See a related discussion below:
 
http://www.head-fi.org/forum/thread/496381/tube-options-on-a-clone-amp#post_6702760

 

[technocrat]

Just what I wanted to see. thanks