I called mesa today to get some info about the 5y3 tube problem on the LSS. They told me to "do not substitute a 5v4 or anything else. They also told me that they have a slight mod that makes the 5y3 last a lot longer and should solve the problem and does not altar the tone at all. They offered the mod free of charge and all I had to do was cover the shipping both ways. The problem is that I have some gigs the next 3 weekends for which I want to use this amp. I will probably send it in a month or so and just cary a couple spare tubes and fuses. Man I am enjoying the tone of this LSS.
Anyone had their modded or repaired by Mesa?
Anyone had their modded or repaired by Mesa?