6SL7 the same as 6SN7 ???

are these the same tubes? whats the difference?

hifi197009-09-2002 3:28pm

hifi1970 OP Details Discussions Posts This discussion Message User 20 posts 09-10-2002 at 02:20pm Copy Comment URL Report Comment Edit Delete thanks for the help guys, i found a pair of 40 year old ken- rad 6sn7 & i was hoping to put them in my cary-805.. guess not.
sugarbrie Details Discussions Posts This discussion Message User 3,854 posts 09-10-2002 at 06:12pm Copy Comment URL Report Comment Edit Delete A VT-231/6SN7 is also a 5692 tube. A VT-229/6SL7 is also a 5691 tube
kinhoang Details Discussions Posts This discussion Message User 15 posts 08-29-2012 at 07:26pm Copy Comment URL Report Comment Edit Delete Searching for this question I have ran into this. I was going to change my new tube set for my Cary mono block 2A3 SE. I found out that the preamp tube 6SN7 was replace by 6SL7 by a previous owner. Both blocks was working fine since I have them. I am not sure if this should be ok but I rather change them back to normal 6SN7. Please advice.