New JJ KT77

I like the JJ tubes, especially the E34L. I'm posting to bookmark, would love to read responses.

I have just installed the JJ kt77's in my mv 55, going from the JJ el34. I was up in the air about whether to try the e34l or the kt77. I am pleased wth my choice. The highs have become more extended and more defined. The lows also have tightened up nicely. A very noticable improvement over the already good sounding JJ el34.

Any further thoughts? observations? I have Siemens EL34s and SED EL34s for my Music Reference RM9 SE amps. What does the KT77 bring to the table?

I just put a pair of Genelex Golden Lion KT77's in my VAC Avatar integrated. It's been less that 20 hours but my initial impression is very positive. I agree with what Kiteflier said, better extension on both ends.

They may have better clarity than the SED el34's I have been using for the past year. The "may" stems from the fact that they sound more linear, offering a different perspective with less mid lushness, resulting in better clarity IMO, and for my purpose, this is good. If you are seeking more of a mid focus, the SED works well.

Please take into consideration that they are new and I haven't really had time to sit and listen much. I will follow up in a few days but thought I'd chime in with initial thoughts.

Just dropped a new set of these into my CJ CAV50 and though they haven't really had a chance to run in and settle fully yet, initial impressions are positive. Compared to the EH EL34s I was using, they are extremely quiet, with minimal tube rush, and seem to have a bit more bottom end and a touch of recess in the midrange. Can't quite sort out the highs yet (they sound fine initially) but will listen extensively over the weekend when I will have a chance to crank the volume a bit, and comment again later. They are nicely built and the pins are the correct size; all internals seem to be rugged and all joints and connections look solid and tight. Also, they did bias a bit lower than the EL34s (had to turn the bias pots counterclockwise about an 1/8 of a turn for each tube), but this was expected. Purchased them from Tube Depot as a matched quad, my long time favorite place to purchase new tubes.