Hello, I too have the same problem with my SFL-1 and I believe that I need to replace the tube as well. What would you guys recommend as a warm tube to tame my occasionally bright system? I am using a mosfet ss amp and smallish Thiel loudspeakers. I am thinking that a Mullard tube would be best? But which one?
solution for "popping sound" from tube amp?
Hi! I have a Sonic Frontiers SFL-1 tube preamp. It has worked perfectly for the last couple of years (time I've owned it), now suddenly tonight there was a "popping" sound coming from my speakers that I traced to the pre. What is the probably cause, and how might I fix it? I understand this pre only has one tube, and I could probably replace it if required, if a tube going bad could be the root of the problem. Where should I buy a replacement tube, and is there a particular type/brand that you recommend? Any help for this tube electronics novice would be much appreciated! Regards, Ben