Thanks, kjl, too bad Adcom didn't spread the word on the cfl bulb issue. I actually communicated with them directly when I was considering whether to get the first pre replaced.
As for turn on thumps, I think most of the older Adcoms did have a turn on thump because Adcom didn't have speaker protection. On the current line up, I think it depends on the model, because I've noticed that their higher up models mention speaker DC Servo and OMRON 20 Amp speaker relay protection circuits. At least the GFA 575SE.
I'll be receiving the 555SE in a week or so and can report back, but I'm fairly sure it'll thump upon turn on.
As for turn on thumps, I think most of the older Adcoms did have a turn on thump because Adcom didn't have speaker protection. On the current line up, I think it depends on the model, because I've noticed that their higher up models mention speaker DC Servo and OMRON 20 Amp speaker relay protection circuits. At least the GFA 575SE.
I'll be receiving the 555SE in a week or so and can report back, but I'm fairly sure it'll thump upon turn on.