Dear all,
Many thanks for your answers
I bought My REF 3 used, and it runs 6L6GC tube in power supply (my REF 3 is from 2005). I will order a new full set of tubes and try new tubes, i will also do the upgrade with 6550c tube and the 4 bypass caps asap. I've opened my REF 3 yesterday and tubes look original ones (the 6L6GC is on bad condition and it's difficult to read what is written on the tube), i guess my REF 3 tubes has more hours than what the counter is saying. I saw also that resetting the hours counter is very easy, so it has been maybe done by a previous owner. For the counter hours, i did some short listening sessions (less than 1 hour each) and i have been surprised to see the counter staying at the same number of hours and only increased for full hours listening (i need to say that my system is physically unplugged from power voltage when it is not used)
Best Regards
Laurent
PS : Is TheTubeStore a good source for REF 3 tubes, as long as ARC doesn't want to ship item in France, and i will not travel to the US before Sep08 the sooner