[Amps] soft-start vs. autotransformer

[Jan Ditzian]

I recently put an SB-201 (2 x 572B) on the air, with the assistance of 
this and other groups.  One modification I considered but did not add 
was a soft-start.  Instead, because my line voltage is at the upper 
legal limit, I decided to get an autotransformer, and I use that to 
bring the amp up to, and down from, full voltage (actually, about 97% of 
full voltage).  The wiper on the autotransformer is so stiff that it 
takes me at least five seconds to get it all the way around, and I 
usually go even more slowly.

I now ask whether there are additional benefits to a soft-start, or if I 
accomplish the same thing with the autotransformer?

73,
Jan, KX2A